316 CVPKINODONTID^. 



12. Haplochilus dovii. 

 D. 8. A. 14. V. 0. L. lat. 31. L. transv. 8. 



The height of the body is contained five times in the total length 

 (without caudal), the length of the head thrice and two-thirds ; head 

 elongate, low, and depressed, with the snout much produced and the 

 upper jaw somewhat longer than the lower ; the eye occupies exactly 

 the middle of the length of the head, its diameter being two-ninths 

 of it, and more than one-half of the width of the interorbital space, 

 which is flat. The origin of the dorsal fin is a little nearer to the ex- 

 tremity of the caudal than to the gill-opening, and corresponds to the 

 twenty-third scale of the lateral line. Anal fin entirelj* before the 

 dorsal; pectoral extending to ventral, which reaches the vent; caudal 

 rounded ; aU the fins well developed. Light brownish olive ; pos- 

 terior half of the dorsal and anal fins with black cross bands ; basal 

 half of the caudal with round light spots. 



Costa Rica. 



rt-6. Males? (six inches long). Punta Arena. Presented by Captain 

 J. M. Dow. 



13. Haplochilus sciadicus. 



Fundulus sciadicus, Cope^ Proc. Acad. Nat. Sc. Philafl. 1865, p. 78. 

 D. 10. A. 12. V. 8. L. lat. 39. L. transv. 13. 



Body short and stout ; the length of the head two-sevenths of the 

 total (without caudal). Eye equals the length of the snout, is tAvo- 

 sevenths of that of the head, and contained once and two thirds in 

 the width of the interorbital space. Origin of the anal somewhat in 

 advance of that of the dorsal, the latter being much nearer to the 

 root of the caudal than to the end of the snout. Fins small. Colora- 

 tion uniform, without spots or lines. {Cope.') 



Platte Hiver. Specimens 2 inches long. 



14. Haplochilus zonatus. 



?? Esox zonatus, Mitch. Lit. 8f Phil. Tram. i. p. 443. 

 Fundulus zonatus, Cuv. i<f Vol. xviii. p. 196. 



B. 5. D. 7. A. 10. V. 6. 



The length of the head is two-ninths of the total (with the cau- 

 dal) ; eye large, its diameter being two-fifths of the length of the 

 head. The dorsal fin almost reaches the caudal, which is lanceolate. 

 Lower part of the side with twelve black cross bars ; dorsal and anal 

 dotted with black, the other fins immaculate. ( Val.) 



Interior of South Carolina. 



15. Haplocliilus luciae. 



Hydrargyra luciae, Baird, Ninth Smithson. Report, 1855, p. 344. 



D. 8. A. 9. V. 6. 



Head less than one-fourth of the total length (with the caudal). 



Origin of anal fin slightly in advance of that of the dorsal, and rather 



