Memoirs Carnegie Museum, Vol. V. 



Plate XVI 



1. Leptodoras linnelli Eigenmann. (Type.) .">2 mm. to dorsal. No. L626. 2. Trachycorystes obscurus (Gun- 

 tiif.r). (Type.) In British Museum. 3. Br achyplaty stoma vaillanti (Cuvieb and Valenciennes). 80 nun. 

 between eyes. No. 1288. 4. Doras granulosus Valenciennes. Total length, 395 mm. Berlin Museum. Coll. 

 Schomburek. 



