J 



254 



Palm of chela very slightly longer than fingers. Dactyli of 



3<i pair of walking legs as long as those of preceding pair. P. coutieri 

 o. Carapace nearly I'/s times as broad as long 31 



Carapace at most i'/-, times as broad as long 37 



31. Dactylus of e.xt. maxillipeds not reaching to end of propodus. 32 

 Dactylus of e.xt. maxillipeds reaching to end of propodus . 34 



32. Antero-internal angle of ext. maxillipeds pronounced. ■ • • 33 

 Antero-internal angle of merus of ext. maxillipeds obsolete. 



Dactyli of 3*^ and 4''' pair of walking legs 3 times as long 



as those of 2'^ pair P- latisshmis 



33. Carapace very much vaulted. Propodus of ext. maxillipeds 



narrowed distalh- P. nigrans 



Carapace flattened. Propodus of ext. maxillipeds not narrowed 



distally P. hitcsccns 



34. Dactyli of 3^^ pair of walking legs very long, 3 times as long 



as those of preceding pair P . pcrnicohts 



Dactyli of 3'' pair of walking legs somewhat longer than those 



of 1^ pair, but shorter than those of 4''^ pair 35 



35. Posterior margin of carapace very much concave in the middle. P. hiaindroni ^ 

 Posterior margin of carapace almost straight 36 



36. Dactylus of ext. maxillipeds reaching beyond propodus. . . P. obsc2ints 

 Dactylus of ext. maxillipeds not overreaching propodus. . . P. latiis 



37. Dactylus of ext. maxillipeds not overreaching propodus. . . 38 

 Dactylus of ext. maxillipeds reaching farther than propodus . 45 



38. Dactylus of ext. maxillipeds reaching to end of propodus . . 39 

 Dactylus of ext. maxillipeds not reaching to end of propodus. 41 



39. Dactyli of 3'^ and 4»h pair of walking legs subequal in length 40 

 Dactyli of 4"> pair of walking legs twice as long as those of 



preceding pair p, exiguus- 



40. Dactyli of 3^ and 4"' pair exactly equal in length . . . . P. consors 

 Dactyli of 4"^ pair somewhat longer than these of preceding pair P. parvuhis 



41. 4"^ pair of walking legs longer than ^^ pair P. rhomdifer 



4"^ pair of walking legs shorter than, or as long as, 3^^ pair . 42 



42. Dactyli of 3^ and 4'!' pair of walking legs subequal in length 43 



Dactyli of 4''^ pair of walking legs longer than those of 3<i pair P. siini/is and P. alcocki"') 



43. Dactyli of 3=1 and 4'^ pair of walking legs about 3 times as 



long as those of 2'^ pair P_ palaensis 



Dactyli of 3^ and 4th pair of walking legs about twice as long 



as those of 2^ pair 44 



I) Burger discriminates tliese species by tlic front being more or less prominent, more so in P. akocki (identified by this 

 author as P. faivulus). 



106 



