-54 



Palm of chela very slightly longer than fingers. Dactyli of 

 3^^ pair of walking legs as long as those of preceding pair 



Carapace nearly 1^3 times as broad as long 



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



Dactylus of ext. niaxillipeds not reaching to end of propodus 



Dactylus of ext. maxillipeds reaching to end of propodus . 



Antero-internal angle of ext. maxillipeds pronounced. 



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 



Carapace very much vaulted. Propodus of e.xt. maxillipeds 

 narrovved distally 



Carapace flattened. Propodus of ext. maxillipeds not narrowed 

 distally 



P. amticri 



34 



P. /atissiinns 



34- 



35- 

 36. 

 37- 

 38. 

 39- 



40. 

 41. 

 42. 



43- 



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



as those of preceding pair 

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



of 2'! pair, but shorter than those of 4''^ pair .... 

 Posterior margin of carapace very much concave in the middle 



Posterior margin of carapace almost straight 



Dactylus of ext. maxillipeds reaching' beyond propodus . 

 Dactylus of ext. maxillipeds not overreaching propodus. 

 Dactylus of ext. maxillipeds not overreaching propodus. 

 Dactylus of ext. maxillipeds reaching farther than propodus 

 Dactylus of ext. maxillipeds reaching to end of propodus . 

 Dactylus of ext. maxillipeds not reaching to end of propodus 

 Dactyli of 3^1 and 4''^ pair of walking legs subequal in length 

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



preceding pair 



Dactyli of 3'^ and 4''^ pair exactly equal in length . . . . 

 Dactyli of 4"^ pair somewhat longer than these of preceding pair 

 4'*^ pair of walking legs longer than 3'^ pair 



P. nigrans 

 P. lutescens 



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

 Dactyli of 3'^ and 4'*^ pair of walking legs subequal in length 

 Dactyli of 4'^^ pair of walking legs longer than those of 3^^ pair 

 Dactyli of 3^^ and 4"^ pair of walking legs about 3 times as 



long as those of i^ pair 



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



P. pcrnicohts 



35 



P. maindro7ii 



36 



P . oösnirus 



P. latiis 



38 



45 



39 



41 



40 



P. exig7i2is 



P. consors 



P. parvulus 



P . rhombifer 



42 



43 



P. siniilis and P. alcocki^) 



P. palacnsis 



as those of 



pair 



44 



l) BURGER discriminates these species by the front being more or less prominent, more so in P. alcochi (identihed by this 



author as P. fayvidus). 



106 



