The genus Bathangia Keferstein, 1859 is a poorly known group that consists of a single species, the type species Bathangia sessilis (Schlotheim,1820). The description by Keferstein had been the only detailed documentation of the type species, and based on Keferstein's decription, Vaughan & Wells (1943) and Wells (1956) grouped this genus with Coenocyathus Milne Edwards & Haime. Re-examination of the type material has revealed, however, that Bathangia has rhizangiid structures and, therefore, must be excluded from the synonymy of the caryophyllid genus Coenocyathus. The purpose of the present paper is to give the description of the holotype of the type species, a short review of its history, and provide the first photographic images of the type material of Bathangia sessilis (Schlotheim, 1820).

We describe one new enchytraeid species, Fridericia liangi sp. nov., from Mt. Changbaishan, Jilin Province, northeastern China. It was collected from soils at the foot of Changbaishan Mountain and is distinguished from all known congeners by the following combination of characters: 1) no lateral chaetae, only ventral chaetae throughout, 2) a maximum of four chaetae in ventral preclitellar bundles, 3) one chaeta in ventral postclitellar bundles, 4) dorsal pores from VII on, 5) esophageal appendages unbranched, 6) coelomocytes without refractile vesicles, 7) clitellum girdle shaped, well developed, 8) no subneural glands, and 9) spermathecae simple.

A new species of crayfish, Orconectes (Procericambarus) raymondi, is described from unglaciated portions of south-central Ohio, North America. Of the recognized members of the subgenus, it is morphologically most similar to Orconectes (P.) putnami, found in Kentucky and Tennessee and is easily separated from it by the presence of a strong rostral carina. It is distinguished from other recognized members of the subgenus by the rostral carina, mandible structure, and a first form male gonopod having a central projection approximately 50% of total gonopod length. An amended version of Taylor's key to the members of the Orconectes juvenilis complex is provided.

Two species of parasitic copepods are described from the common cloacal cavity of the algal-bearing (photosymbiotic) compound ascidian, Didemnum molle (Herdman), occurring in Okinawa, Japan. They are a new form of Lichomolgidae (Poecilostomatoida), Lobomolgus okinawaensis new genus, new species, and a new species of Notodelphyidae (Cyclopoida), Doroixys capillosus. The new genus Lobomolgus is unique among the lichomolgid genera in having in the female a pair of long, dorsolateral processes on each of the last two somites of the metasome. It is also characteristic in having in the female a highly reduced endopod (a small lobe tipped with one seta) on leg 4 and bearing an armature of III, 5 (not II,I,5) on the last exopodal segment of leg 4. Doroixys capillosus, new species, can be distinguished from its congeners by the possession of: 1) a 6-segmented antennule, 2) a mandibular endopod with 5 setae, 3) a maxilliped tipped with 6 setae, 4) a 2-segmented endopod on leg 3, and 5) a cephalosome with rounded posterolateral corners (due to the lack of processes).

Four new species of the genus Haplostoma (Haplostomatinae) are described on the basis of females living in compound ascidians from Madagascar. These copepods and ascidian hosts are as follows: 1) Haplostoma bispinosum, in Polyclinum ?macrophyllum Michaelsen; 2) H. elongatum, in P. diaphanum von Drasche; 3) H. madagascarensis, in P. ?insulsum Sluiter; and 4) H. junctum, in Eudistoma sp. In these copepods, the armature on the antenna and legs 1–4 exopods consists of bifurcate spines, representing the main primary diagnostic features of subgroup 2 of the genus. The four new species are distinguished from the three known species of subgroup 2 primarily by the armature formulas for legs 1–4 exopods and by the characters of the caudal rami. Haplostoma junctum, new species, is the only species of the genus whose caudal rami are medially fused. The diagnosis of subgroup 2 is revised on the basis of a comparative study of seven species (three previously known, four new).

Mustique Island in the Lesser Antilles is inhabited by Nicoletia phytophila Gervais, 1844 ( = Nicoletia meinerti Silvestri 1905) and by a new species of Anelpistina, described herein. Morphology and 18S rRNA sequences indicate that the new species of Anelpistina shares affinities with a species from Aruba Island, and both islands appear to have been colonized in the middle to late Cenozoic, possibly helped by low sea levels during glaciations. Nicoletia phytophila is of more recent origin and humans probably facilitated dispersion over the seas.

A new eutardigrade, Dactylobiotus kansae, new species, is described from a freshwater algal sample from Kansas, U.S.A. The new species differs from other species of this genus by having a smooth cuticle, shorter stylet support insertion point distance, and smooth eggs deposited in the exuvium.

Turdus trichas Linnaeus, 1766 is a composite of two species. To preserve the name as currently used for the Common Yellowthroat Geothlypis trichas, the specimen illustrated by Edwards (1758) is designated as lectotype and Charleston, South Carolina, is designated as the revised type locality.

Calonectris kurodai, new species, is described from the Middle Miocene Calvert Formation of Virginia and Maryland. This shearwater was much smaller than any living congeneric species and provides the earliest record for the genus Calonectris. A femur referred to Calonectris sp. is probably from later Miocene deposits of the Choptank Formation and was about the size of the smallest living species C. edwardsi.