374 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



Body robust, a little compressed behind. Head lieavy, little com- 

 pressed, gibbous above and anteriorly. Snout thick, broad, protruding, 

 blunt and tumid at tip, considerably overhanging the small inferior 

 mouth, and entirely below the level of the eye. Length of snout 2§ in 

 head. Maxillary reaching nearly to posterior margin of eye, 2^ in head, 

 hidden entirely beneath the preorbital. Mouth broad, but without much 

 lateral cleft. Lower jaw included. Ui^per lip thick, slipping beneath 

 the snout. Lower lip very thick, its anterior edge forming a soft sharp- 

 edged fold; outline of the lip very obtuse. Teeth rather strong, coarse, 

 bluntly conical, forming a large ovate patch on each side of lower jaw, 

 the two patches not confluent. A similar but smaller patch on the 

 vomer. No teeth on the palatines. Upper jaw with a band of similar 

 but rather smaller teeth. 



Nostrils roundish, close together, in front of the small round eye, 

 which is nearer angle of mouth than level of top of head. Interorbital 

 space very broad, transversely convex. Eye 6 in head, 3 in interor- 

 bital width. No adipose eyelid. Neither lip with cirri or papillie. 



Scales of head each with many smaller ones at base; accessory scales 

 on body largely developed. All the fins, including spinous dorsal, cov- 

 ered with small scales. Gill membranes largely united, free from the 

 isthmus. 



Dorsal spines compressed and curved, becoming rapidly shorter from 

 the first, which is about two-thirds length of head. Second dorsal and 

 anal with their free margins concave, the anal somewhat falcate, its 

 longest ray 1^ in head. Caudal forked, as long as head. Pectoral as 

 long as head, reaching middle of first dorsal. 



Color dull olivaceous, without distinct markings, paler below. 



6. Mugil brasiliensis Agassiz. 



15121, 15122, 15128. Several young specimens. 



7. Muraenesox coniceps Jor. &. Gilb. 



30981. One large specimen, in poor condition. 



8. Echeneis naucrates L. 



30981. One half-grown specimen, in fair condition. Disk with 22 

 lamina}. 



9. Scomber grex Mitchill. 



30998. Two half-grown specimens, in poor condition. The air-bladder 

 is present. 



10. Oligoplites altus (Gtbr.) J, & G. 



30969. A young specimen, in good condition. 



11. Oligoplites occidentalJs (L.) Gill. 



COIifjopIitcs inoruatus Gill, Proc. Ac. Nat. Sci. Phila. 1863, 160.) 



30959. (Type of Olkjopliies inoniatus.) One adult specimen, in good 

 condition. 



