890 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



than usual iu C. artedi. D. 12; A. 11; ,V. 12; P. 16; Lat. 1. 81 to 95. 

 Northern Alaska; Yukon River to Point Barrow. {Bean.) 

 (Bean, Proc. U. S. Nat. Mus. iv, 1881, 156.) 



Page 306. Instead of Onoorhynchus choaicha read: 

 499. O. tcBiawytcha (Walb.) J. & G. 



Tiie barbarous appearance of this name scarcely warrants so great a 

 change in its orthography. 



Page 320. I^o. 515, SalveJimis hoodii, should be erased. The speci- 

 mens in the British Museum, described by Dr. Giinther as Salmo lioodl 

 (vi, 150), belong to SalveUnus nmnaycush. The remaining types of Bicli- 

 ardson's original description belong to Salvelinus fontinalis. 



Page 325. After Chologaster agassizi add: 

 523 (b). C papillifei" Forbes. 



The specimen from Southern Illinois, described iu the text from the 

 MSS. of Professor Forbes, proves to be distinct from C. agassizi. Several 

 other specimeus have been since obtained. It is further distinguished 

 from the other members of the genus by the presence of tactile papillary 

 ridges, as in Amhlyopsis and TyphVuMhys. The character of "no ]»apil- 

 lary ridges", assigned in the text to Chologaster^ should therefore be 

 erased. 



{Chologaster papiU'iferus Forbes, Ainer. Nat. Jan. 1882, 1.) 



Page 329. Gyprinodon gibhosiis appears to be identical with C. rarie- 

 gatiis, difl'ering possibly in slightly greater size and deeper coloriition, 

 the ante-dorsal region being, in the males, of an intense steel-blue and 

 the lower parts largely salmon-red. Head 3-| to 3|; depth 2 to 2f. D. 

 11; A. 10; scales 26-13. 



For Cyprinodon gibhosus (B. & G.) substitute — 

 526. C. boviiiHS B. & G. 



A doubtful species, differing from C. variegatus in having the head 3 

 in length, the eye 4 in head, the ventrals under anterior margin of dor- 

 sal, and the fin-rays D. 9, A. 8. Leon's Spring, Texas. 



(B. & G. Proc. Acad. Nat. Sci. Phila. 1853, 389, etc.) 



526 (/'). C. exiaiiiis Gnl. 



Differs from C. Tariegatus in having the head 3.^ in length, the eye 4 

 in he;id; D. 12, A. 12. Coloration pale, the male largely golden, L. 2h 

 inches. Chihuahua River. 



(Girard, Proc. Acad. Nat. Sci. Phila. 1859, 158.) 



1 



