54 



CALIFORNIA ACADEMY OF SCIENCES. 



Galeichthys emphysetus Jordan, Proc. U. S. Nat. Mus. 1886, 559 



(name only). 

 Tachisurus emphysetus Eigenm. & Eigeiim. Proc. Cal. Acad. 2d Ser. 



vol. i, 1888, 141 (name only). 

 Habitat: Surinam. 



This species is closely related to T. brandtii being the 

 eastern representative of that species. 



Depth little greater than the width. Profile straight, 

 less steep than in brandtii. Depth of the head If in its 

 length, its width 1J. Top of the head sparsely and 

 coarsely granular, the granulation extending forward 

 only to middle of cheek; fontanel bordered anteriorly 

 by smooth ridges; occipital process coarsely and closely 

 granular, without a prominent keel, its margins convex, 

 its tip emarginate, not coossified with the dorsal plate; 

 dorsal plate shield-shaped, not keeled, its surface irregu- 

 larly pitted, its margin more finely 

 graven, its length about 3-J in the 

 head. In the specimen examined 

 the dorsal plate seems to have been 

 at some time slightly broken in front, 

 a small, narrow, sharp process of the 

 occipital process fitting into the split. 



Eyes small, 3 in the 

 snout, 11 in the head, 5 

 in the interocular. 



Maxillary barbels flat- 

 tened, reaching to below 

 middle or end of dorsal 

 fin, postmentals not quite 

 to base of pectorals. Up- 

 per jaw slightly project- 

 ing; all the teeth minute, 

 villiform, the vomerine 

 patch emarginate in front 



