902 CONTRIBUTIONS TO NORTII AMERICAN ICHTHYOLOGY IV. 



groove, which is wider behind and forks at the nape. Supraorbital bones 

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

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

 jaw from eye about If times as long as the rpst of head. Eye large, 7 in 

 snout, 2j in postorbital part of head, and 1|- 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 tin; 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 3; 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 : 

 5O9. T. marinus (Bloch & Schn,) J. & G. 

 To the synonymy add : 



(Esox bclone, var. marinus Bloch & Schneider, Syst. Ichth. 1801, 391.) 



Page 377. After Hemirhamphus rosce add: 

 I. Ventrals much nearer base of caudal than head. 

 6O4 (b). 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. Pivmaxillaries broader 

 than long. Eye large, equal to interorbital space, 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; pert oral : \ length of head; ven- 

 trals 2. : / in head; caudal deeply forked, the lower lobe longest. Head 

 (with lower jaw) i'; ; depth :-;. 1). 14; A. 12; Lat. 1. 53. Tropical 

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

 T. Wilkins. 



(Eaox brasilii IINIM 1.. S\M. .\;ii. i. .">!?. in part, the name and lin rays taken from 

 Maregrave'a account of Ti/losunis timum ; ( iiinllirr, vi, 'J?0: Eaox brasiliensin, Bl. & 

 Schn. 392: Ihmu-lmwphua maryinatus and balao L<- .Snciir, Journ. Acad. Nat. Sci. Phila 



