STALK-EYED CRUSTACEA 233 



hand has a spine above articulation of movable finger; 

 finger finely toothed. 



Range. — Upper Amazon. 



4. Dilocarcinus pictus. 



Dilocarciniis pictus . . A. Milne Edwards, H. Milne 



Edwards. 



The carapace is almost square, and is covered with 

 small red spots. Front slightly sloping, two-lobed. 

 Antero-lateral border armed with five very sharp spini- 

 form teeth, counting the external orbital angle. The 

 lower orbital border has strong teeth, of which the 

 two or three internal are very strong. The antero- 

 lateral angles of the buccal cavity have two spiniform 

 teeth. 



The two terminal joints of the walking legs have 

 thick cilia on both edges. The third to sixth segment, 

 inclusive, of the abdomen of female are soldered to- 

 gether ; it is broad in the middle, and the margins are 

 convex. 



Range. — Peru, River Amazon. 



5. Dilocarcinus castelmani. 



Dilocarcinus castelmani . Milne Edwards. 



The antero-lateral border has seven spines, counting 

 the external orbital angle. The suborbital spines are 

 sharp. The ridge at the antero-external angle of the 

 buccal cavity has no spines. 



Resembles D. pictus. 



Range. — Brazil. 



