902 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



groove, whicli is wider behind and forks at tlie nape. Supraorbital bones 

 with radiating striae. Jaws unusually short, stiff, strong, rapidly taper- 

 ing forwards 5 large teeth of jaws very strong, knife-shaped. Upper 

 jaw from eye about 1^ 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. 

 Yentrals inserted midway between base of caudal and middle of eye, 

 their length a little less than that of pectoral, and equal to i>ostorbital 

 part of head. Head 3J; 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 Tylomrus longirostris read : 

 509. T. marinus (Bloch & Schn,) J. & G. 

 To the synonymy add : 

 (Esox belone, var. marinus Blocb & Schneider, Syst. Ichth. 1801, 391.) 



Page 377. After Hemirhamphus rosce add: 

 b. Ventrals mucli nearei* base of caudal than head. 

 604 (6). 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) 4| 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) 2|; depth 6|. D. 14; A. 12; Lat. 1. 53. Tropical 

 America; a specimen lately taken on the coast of Virginia by Dr. J. 

 T. Wilkins. 



{Esox hrasilietisis L. Syst. Nal. i, 517, iu part, the name and fin rays taken from 

 Marcgrave's account of Tylosurus tiinucu; Giiuther, vi, 270: Esox brasiliensis, Bl. & 

 Schn. 392 : Hemirhamphus marginatus and halao Le Sueur, Journ. Acad. Nat. Sci. Phila 



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