There is little information on the larvae of squat lobsters of the family Galatheidae in spite of their abundance in mesopelagic and abyssal fauna. Larvae of two galatheid species, Agononida incerta (Henderson, 1888) and Munida striola Macpherson and Baba, 1993, are described and illustrated for the first time from the northwest Pacific region based on laboratory-hatched material. The zoeas of these two species are easily distinguished from each other by their size and the morphology of the antenna and maxillule. Previously-known zoeas of the family are compared and a provisional key for 6 galatheid genera is presented.