Genera of the 'Dwmudx. 299 



about as long as the third and often with a thorn on the outer 

 side of its last joint." 



J), australiensis, D. friJentatus, sp. n., D. cranioides, 

 D. orientalis, ? D. cajyut-itiortuutn, &c. 



3. Deomidia, Stimps, (? + Pseudodromia, Stimps.). 



" Dromiidffi with no epipodite on the cheliped, the walking- 

 logs not knobbed or ridged, the carapace narrow but not 

 longer tlian broad, the furrows between the regions almost 

 completely lost, the ridges of the efferent branchial channels 

 wtU made, the sternal grooves of the female ending together 

 usually on the segment of the cheliped, the fifth leg longvr 

 than the fourth, as long as or rather shorter than the third, 

 and with no thorn on the outer side of its last joint." 



D. hirtissirna (probably), D. antillensiSj I), iini'dentata, 

 &c.* 



4. Dro:mides, gen. nov. 



" Dromiidie with no epipodite on the cheliped, the walking- 

 legs not knobbed or ridged, the carapace longer than broad, 

 the furrows between the regions almost completely lost, the 

 ridges of the efferent branchial channels well made, the sternal 

 grooves of the female ending apart in the fore part of the 

 segment of the second walking-leg, tiie fifth leg shorter than 

 the third and with no thorn on the outer side of its last joint." 



Z>. Bilgendorjij &e. 



5. CliYPTODROMiA, Stimps, { + Ejndfomia, Kossm.). 



" Dromiidai with no epipodite on the cheliped, the walking- 

 legs knobbed or ridged, the carapace usually broader than 

 long, the regions present and usually well defined, the ridges 

 of the efferent branchial channels well made, the sternal 

 grooves of the female ending apart behind the cheliped 

 segment, the fifth leg shorter than the third, and its last joint 

 without a thorn on the outer side." 



C. coronata (probably), C. fihifera, G. canaliculata, 

 C. bullifera, C. Demanij C. ehaliuidts, C. Gilesi^ C. granu- 

 latOf C. hirsuta, sp. n., &c. 



6. Ceyptodromiopsis, gen. nov, 

 '' Dromiidge with no epipodite on tlie cheliped, the walking- 

 legs knobbed or ridged, the carapace broader than long, 



* The species kno^vn as Drojnidia ylobosa (Lam.) seems to me to 

 belong to Cryptodromia. The questioa can only be settled by an 

 examination of the sternal grooves of the female, which appears to bo 

 unknown. 



