55 

 SILURID^. 



^LURIOHTHYS PANAMBNSIS, GUI [Nps. 17548, 17549]. 



Mlurichthys panamensis, Gill, Proc. Acad. Nat. Sci. Phila., 1863, 172. — Gunther, Cat. 



Fishes, v, 1864, 179; Trans, Zool. Soc. London, vi, 1869, 476. — Steindach- 



NER, Sitzb. d. k. Akad. d. Wiss. Wien, Ixsii, 1875, Ichthyologische Beitriige, 



iv, 14. 

 Mhirichthys nucJialis, Gunther, Trans. Zool. Soc. London, vi, 1869, 476, pi. 81, f. 2; 



Cat. Fisli., V, 1864, 179. 



Locality: Pacific coast of Lower California; a special locality, Boca 

 Soliclad. 



OPHICHTHYID^. 



OPHICHTHYS TRISERIALIS, {Kimp) Gtlir. [IS^o. 17542]. 



Ophichihys triserialis, Gunther, Cat. Fishes, viii, 1870, 58. 



Murosno;psis triserialis, Kaup., Apod. Fish., 1856, 12. 



Herpetoichthys collisoma, Abbott^ Proc. Acad. Nat. Sci. Phila., 1860, 475. 



O^jhisurus californiensis, Garrett, Proc. Calif. Acad. Nat. Sci., iii, 1867, 66. 



Locality : Lower California. 



Giinther states that there are one or two series of smaller brown spots 

 along the abdomen. We obtained two specimens of this fish, and neither 

 shows any brown spots on the abdomen. In every other respect they 

 agree with Abbott's description. 



EHINOBATID^. 



KHINOBATDS PRODUCTUS, Ayres [No. 18353]. 



BMnobahis productus (Ayres, MSS.), Girard, Proc. Acad. Nat. Sci. Phila., 1854, 196; 



U. S. P. R. K. Eep., X, 1858, part iv, 370. 

 BKinobatus leucorhynchus, Gunther, Proc. Zool. Soc. London, 1866, 604 ; Trans. Zool. 



Soc. London, 1868, 490 ; Cat. Fish., viii, 1870, 444 (fig. of snout). 



Female. — The anterior nasal valve is dilated into a very narrow lat- 

 eral fold, scarcely projecting beyond the nasal margin. The length of 

 the nostril is slightly more than its distance from the lateral margin of 

 the head, and more than the distance between the inner angles of the 

 nostrils, and much less than the width of the mouth, which is very 

 slightly arched. Snout produced, the distance between the outer angles 

 of the nostrils being three-fifths of that between the mouth and the end 

 of the snout. A series of small, depressed, polished spines along the 

 median ridge of the back; groups of small polished tubercles on the 



