Sjyeciej^ of Pavatelpliusa. 121 



Family Telphusidse. 

 Genus Paeatelphusa, M.-Echv. 



Conspectus of the (Species. 



Latero-anterior margins of the carapace armed 



with a sino-le large, acute, conical and 



salient epibranehial tooth P. qyinifjcra, W.-M. 



Latero-anterior margins of the carapace armed 



with two epibranehial teeth. Meropodal 



joints of all the legs armed at their distal 



ends with a sharp spine P. tridentata, M.-Edw. 



Latero-anterior margins of the carapace armed 



with three epibranehial teeth. 

 The first two teeth slightly flattened, the 

 last almost conical and smaller than the 

 rest. Meropodal joints of all the legs 

 armed at their distal ends with a sharp 

 spine. Penultimate somite of J post- 

 abdomeu constricted anteriorly so as to 

 form with the preceding an hourglass- 

 shaped mass P. simnsk, M.-Edw. 



The first tooth similar to the extraorbital 

 angle, but smaller ; the rest salient, acute, 

 and conical. Mei'opodal joints of the legs 



unarmed P. Martensi, W.-M. 



Latero-anterior margins of the carapace armed 



with four epibranehial teeth. 

 The teeth feebly developed, flattened, acute, 

 curving forwards and inwards, and dimin- 

 ishing gTadually in size from before back- 

 wards. The carapace perfectly smooth, 

 longitudinally very convex, its antero- 

 lateral margins much inclined; post- 

 frontal crest well developed P. D(n/a7ia,W .-M . 



The teeth all equal, and siniilar to one another, 

 large, almost conical, and very salient. 

 Carapace considerably areolated, longitu- 

 dinally very convex, its antero-lateral 

 margins much inclined ; postfrontal crest 



well developed P. Edwarfhi, W.-M. 



The teeth tolerably well daveloped and salient, 

 flattened, acute, and diminishing gTa- 

 dually in size from before backwards. 

 Carapace perfectly smooth, depressed, and 

 but slightly convex, its antero-lateral 

 margins hardly inclined. The frontal and 

 orbital margins conspicuously, the edges 

 of the feebly developed postfrontal crest 

 and of the epibranehial teeth faiitly 

 crenulated P. cremilifera, W.-]M. 



Ann. (£• Mag. N. Hist. Ser. 4. Vol. xvii. 9 



