101. GOBIID.E. 
G29 
upper ray spotted ; veiitrals white. Width of pectorals less than half 
length of head, their length a little less than that of head; ventrals 
reaching three-fifths distance to vent. Scales small, evident, in very 
oblique series. T-shaped bone on top of head conspicnons, on each 
side of it a broad naked area, said to be the seat of electric powers. 
A ridge of skin along middle line of belly from ventrals to vent. 
Head 3; depths. D. lY-I, 13; A. 12. L. 12 inches. West Indies, 
occasional on onr South Atlantic coast. 
( Uranoscopus y-grwcum Cuv. & Yal. iii, 30d, 18-29: Urmioscopm y-gra'cnm Giiutlier, ii, 
2-29: Upselonphonis y-grcecum G\\\, Pi’oc. Acad. Nat. Sci. Phila. 1861, 113; Bean, Proc. 
U. S. Nat. Mus. 1879, 56.) 
9^01. A. aiBOESllls (Ciiv. & Val.) Brevoort. 
Brownish, everywhere covered with fine white spots; a dark lateral 
band on the caudal peduncle, near which the spots are larger; caudal 
Avith lengthwise stripes of black and pale. Form and armature essen- 
tially as in A. y-grcvcum. Pectoral a little longer than ventral, one- 
fourth shorter than the head. Scales on back evident, but small, the 
belly and lower part of the sides naked. Head 2^; depth 3^. D. IV- 
13; A. 12; Lat. 1. 113. Atlantic coast of United States; rare. 
( Uranoscopus anoplos Cuv. &. Val. viii, 493 (young, said to to naked): Agnus anoplus 
Giiutlier, ii, 229: Astroscopus gnttatus Abbott, Proc. Acad. Nat. Sci. Pliila. 1860, 365; 
Beau, Proc. U. S. Nat. Mus. 1879, 60.) 
Family CIV.— aOBIID.E. 
{The Gobies.) 
Body oblong or elongate, naked or covered with ctenoid or cycloid 
scales. Dentition various, the teeth generally small ; premaxillaries 
jirotractile; suborbital without bony stay. Skin of head continuous 
with covering of eyes. Opercles generally unarmed. Pseudobranchim 
1 (resent. Gills 4, a slit behind the fourth; gill-membranes united to the 
isthmus, the gill-openings thus restricted to the sides. Xo lateral line. 
Dorsal fins separate or connected, the spinous dorsal least developed, 
of 2-S tlexible spines, rarely wanting; anal usually without spine, sim- 
ilar to the soft dorsal ; ventral fins close together, separate or fully united, 
each composed of a short spine and 5 soft rays, the inner rays longest; 
the A^entral fins, when united, form a sucking-disk, a cross-fold of skin 
at their base forming a cup; caudal fin convex; anal papilla prominent. 
Xo pyloric coeca; usually no air-bladder. Carnivorous fishes, mostly of 
small size, living on the bottoms near the shores in warm regions. Some 
