20) PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXXIV. 
EVORTHODUS BREVICEPS Gill. 
Evorthodus breviceps Gitu, Proc. Ac. Nat. Sci. Phila., 1859, p. 195 (‘Trin- 
idad). 
Locality, lagoon near Tampico. 5 
Head 44 in length; depth 42; eye 3 in head. D. VI-11; A. 12. 
Scales 28 to 30, in longitudinal series, 10 in transverse. Body ro- 
bust, compressed posteriorly. Head thick and short. Snout blunt, 
rounded. Interorbital space narrow, one-half orbit. Jaws subequal; 
lips thin. ‘Teeth small, uniserial, deeply notched at tips. Teeth of 
the lower jaw horizontal, the emarginated tips projecting outwards. 
Isthmus moderate; gill openings restricted to the sides. 
Pectorals not extending to vent, each with 14 rays. Ventrals com- 
pletely united, not adherent to the belly; shorter than pectorals. 
Spinous dorsal with third and fourth rays longest (two-thirds of 
Fig. 2.—EVORTHODUS BREVICEPS. 
head). Rays of soft dorsal and of anal as long as third ray of spin- 
ous dorsal. Caudal rounded, slightly longer than head, with 21 rays. 
' Scales ctenoid, of moderate size; those on belly very small. Nape, 
occiput, and opercles scaled, the scales on opercles rather obscure. 
Cheek apparently with a number of embedded scales and one or two 
rows of minute papille. 
Color in alcohol, brown, darker above; irregularly and conspicu- 
ously spotted and blotched on the sides; pale and unspotted below ; 
the larger blotches of one side meet those of the other side along the 
dorsal line, producing the effect of irregular crossbars over the back; 
two dark spots at base of caudal alternate with a single dark spot 
on caudal peduncle. Pectorals somewhat pigmented in transverse 
bands; ventrals without color; spinous dorsal conspicuously barred 
with black; soft dorsal more or less checkered or barred with dark; 
anal pale slightly pigmented on the rays; caudal irregularly barred. 
This singular little goby, distinguished by the unusual form of 
its teeth, has been but once recorded since it was originally described 
