314 THE CRUSTACEA 



Family Albuneidae. Albimea, Fabricius. Family Hippidae. 

 Hippa, Fabricius ; Remipes, Latreille. 



Section 4. Brachyura. 



Abdomen small, symmetrical, bent nndei" thorax, tail-fan not 

 developed ; carapace fused with epistome at sides and nearly always in 

 the middle ; exopodites of maxillipeds with ilagella, when present, bent 

 inwards; first legs always, third legs never, chelate ; no appendix interna 

 on pleopods ; nropods rarely present, never biramous ; branchiae gener- 

 ally few. 



Tribe 1. Dromiacea. 



Last pair of legs modified, dorsal in position ; female openings on 

 coxopodites ; first pleojiods present in female ; branchiae sometimes 

 numerous ; mouth-frame quadrate. 



Sub-Tribe 1. Dromiidea. 



Sternum of female with longitudinal grooves ; vestiges of uropods 

 usually present ; branchiae 14-20 on each side ; eyes completely sheltered 

 by orbits ; no linea homolica on carapace. 



Family Homolouromiidak. Homolodromia, A, Milne -Edwards. 

 Family Dromiidae. Dromia, Fabricius. Family Dynomenidae. 

 Dynomene, Latreille. 



Sub-Tribe 2. Homolidea. 



Sternum of female without longitudinal grooves ; no uropods ; 

 branchiae 8-14 on each side ; eyes not completely sheltered by orbits ; 

 linea homolica usually present on carapace. 



Family Homolidae. Homola, Leach. Family Latreilliidae. 

 Latreillia, Roux. 



Tribe 2. Oxystomata. 



Last pair of legs normal or modified ; female openings generally on 

 sternum ; first pleopods wanting in female ; branchiae few ; mouth-frame 

 triangular, produced forwards over epistome. 



Family Dorippidae. Dorippe, Fabricius ; Ethusa, Roux ; Cydodoripipe, 

 A. Milne-Edwards. Family Raninidae. Eanina, Lamarck. Family 

 Calappidae. Sub-Family Calappinak. . Calappa, Fabricius. Sub- 

 Family Orithyinae. Orithya, Fabricius. Sub-Family Matutinae. 

 Matuta, Fabricius. Family Leucosiidae. Sub-Family Leucosiinae. 

 Leticosia, Fabricius ; Ebalia, Leach. Sub-Family Iliinae. Ilia., Leach. 



Tribe 3. Brachygnatha. 



Last pair of legs normal, rarely reduced or dorsal in position ; female 

 openings on sternum ; first pleopoils wanting in female ; branchiae few ; 

 mouth-frame quadrate. 



