194 



k„ Dactylus of third legs with the ventral hook obtuse. Merus 



at the utmost 3,1 -times as long as wide. 



p^ Ventral hook of the dactylus spoon-like excavate, 



anterior margin of the dactylus with a process 



with which the dorsal hook has coalesced. Frontal 



spines acute, rostrum with the margins straight 



and converging from the base to the tip . . . Charon (Heller) 



/j Ventral hook of the dactylus probably not excavate, 



anterior margin of the dactylus probably without 



a process. Lateral margins of the rostrum at first 



parallel, further converging to the tip. Lateral 



teeth broader than those of Syn. CJiaron (Heller), 



not acuminate Helleri de Man 



(Syn.: A. charon J. G. de Man, in: Zool. Jahrb. Abth. f. Syst. IX, 1897, p. 743, 

 Taf. 35, fig. 63). 



^2 Dactylus of third legs triunguiculate. 



b^ Merus of third legs with moval^le spinules on its posterior margin. 



c^ Terminal spine of scaphocerite shorter than carpocerite. Lower 



spine of the basicerite about as long as basal antennular article. 



d^ Dactylus of third legs stout, about 1,5-times as long as broad 



at its base, the principal hook perpendicular to the axis of 



the joint Nilandensis Cout. 



d^ Dactylus of third legs 2,5-times as long as broad at its base, 

 the principal hook directed obliquely forward .... 



Ni/andensis Cout. var. bandaensis de Man 

 ^2 Terminal spine of scaphocerite longer than carpocerite. Lower 

 spine of the basicerite reaching to apex of median antennular 



article Nilandensis Cout. var. oxyceros Cout. 



b^ Merus of third legs unarmed. 



c^ Spinules of the upper surface of the telson quite distinct. Propodus 

 of third legs spinulose along its posterior margin. 

 d^ Dactylus of third legs with the ventral hook measuring three- 

 fourths the principal, being almost as long as it. 

 e^ Fingers of large chela of moderate length, their length in 

 proportion to that of the chela as i : 3,5. Carpocerite 



4,3 — 4,5-times as long as wide iriting^ncuiatns (Paulson) 



(Confer: G. Nobili, in: Bull. Scientif. France et Belgique, XL, 1906, p. 25). 



e„ Fingers of large chela extraordinarily short, their length in 

 proportion to that of the chela as i : 5,33. Carpocerite 



5-times as long as wide physocheles Cout. 



(H. COUTIERE, in: Bull. Soc. Philom. Paris, 1908, p. 10). 



