902 CONTKIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
groove, which is wider behind and forks at the nape. Supraorbital bones 
with radiating strife. Jaws unusually short, stiif, strong, rapidly taper- 
ing forwards; large teeth of jaws very strong, knife-shaped. Upper 
jaw from eye about If times as long as the rest of head. Eye large, 7 in 
snout, 2f in postorbital part of head, and If in interorbital width. Max- 
illary entirely covered by the preorbital. Cheeks densely scaled; oper- 
cles mostly naked except along the anterior margin. Scales of body 
minute, especially above. Dorsal fin low posteriorly; the height of its 
anterior lobe equaling that of anal, or length of postorbital part of 
head; its longest ray f the base of the fin; caudal lunate, its lower lobe 
nearly half longer than the upper; middle rays about as long as eye. 
Ventrals inserted midway between base of caudal and middle of eye, 
their length a little less than that of pectoral, and equal to postorbital 
part of head. Head ; depth 13. D. I, 22; A. I, 20; P. 14. Pensa- 
cola, Florida; a large species, remarkable for the great strength of its 
short jaws. 
(Beau, Proc. U. S. Nat. Mus. 1882.) ^ 
Page 374. Instead of Tylosurus longirostris read : 
509. T. mariniis (Bloch & Schn,) J. & G. 
To the synonymy add : 
(Esox belone, var. marinus Bloch & Schneider, Syst. Ichth. 1801, 391.) ^ 
Page 377. After Hemirhamphus rosce add: 
h. Ventrals much nearer base of eaudal than head. 
604 (&). H. brasiliensis (L.) Gthr.—.Balao. 
Greenish above, sides silvery, the lateral silvery stripe very indis- 
tinct. Body not very slender, compressed. Lower jaw (from end of 
upper jaw) 4f in length from its tip to base of caudal. Head, without 
mandible, 5 in length from tip of upper jaw. Premaxillaries broader 
than long. Eye large, equal to interorbital space, f postorbital part of 
head. Ventrals inserted very far back, midway between base of caudal 
and tip of pectoral; vertical fins scaly; anal much smaller than dorsal; 
last ray of dorsal slightly produced; pectoral f length of head; ven- 
trals 2| in head; caudal deeply forked, the lower lobe longest. Head 
(with lower jaw) 2f; depth 6f. D. 14; A. 12; Lat. 1. 53. Tropical 
America; a specimen lately taken on the coast of Virginia by Dr. J. 
T. Wilkins. 
(Esox brasiliensis L. Syst. Nat. i, 517, in part, the name and fin rays taken from 
Marcgrave’s account of Tylosurus timucw, Giiuther, vi, 270: Esox brasiliensis, Bl. & 
Schn. 392 : Hemirhamphus marginatus and balao Le Sueur, Journ. Acad. Nat. Sci. Phila 
