698 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



its rays all simple. Utah and Western Colorado, abundant; not evi- 

 dently different from the preceding. 



irlinliri Cope, Proc. Amer. Phil. Soc. Phila. 1874, 138: Uranidca vhcchri 

 Cop.- A V.-ii r.nv, Zool. Wheeler's Expl. W. 100th Mer. v, G9G.) 



aa, Palatino tooth obsolete. (Uranidca.) 

 c. Vi-ntral rays I, 4. 



1O62. U. cognata (Rich.) J. & G. 



Apparently similar to the European Uranidca gobio, and distin- 

 guished from most of the American species by having the ventral rays 

 1, 4. Skin smooth; pectorals as long as head; preopercular spine small 

 curved upwards. D. VIII-18; A. 14. Great Bear Lake (Richardson); 

 perhaps the same as the next. 



(Coitus cognutit* K'irhanlson, Fauna Bor.-Amer. iii, 1836,40: Cotlus coynatus Girard, 

 1. c. 41, ami Giiuther, ii, 157.) 



1O33. U. miaiuta (I^llas) J. & G. 



Olivaceous, finely variegated and speckled; tins above speckled. 

 Body long and low, little compressed. Head rather small, wider than 

 deep. Mouth short, comparatively small, the maxillary extending little 

 beyond front of orbit; mandible included; preopercular spine sharp, 

 straight. First dorsal low, the spines nearly even; pectorals reaching 

 about to vent; veutrals not to vent; skin entirely smooth. Dead 4; 

 depth 44. D. Vlll-lil; A. 14; V. I, 4; Lat. 1. 36. L. 5 inches. Aleu- 

 tian Islands. Perhaps a variety of the European U. gobio. 



(Colin* niinulux Pallas, Zoogr. Rosso.-Asiat. iii, 14.">, 1M1 1-1831 : Uratiidca microstoma 

 1-,'x-kiu.ifton, Proc. U. S. Nat. Mus. l-'H), ~,S: uot Cot lux mii-roKtomun Ilot-krl.) 



cc Ventral ray.s I, 3. 



(/. Anal rays 14 or !.">. 



1OO1. U. mar^iiiafa Bran. 



Olivac.-oiis, hlotelied, the tins punctulate; first dorsal dark, with a 

 distinct pale margin. Body stontish. Head broad, slightly depressed; 

 maxillary Keaehing to anterior third of orbit ; preopereular spine short, 

 bliintish; bel>\v this one or t \vo smaller ones; \.-nt nearer base of 

 caudal than snout. Head:;-, pectoral I in length; ventrals (i. 1 ). \' 1 i 

 or VHI-lSor 1!: A. l/i; V. I,;;. Walla Walla, Wasliington. (Jlcnn.) 



(B.-an. Pro,-. I'.S. Nal. Mu.-. 1881,28.) 

 IO<.. I. \ isrosa ( Hal.l. i .l..r. 



Olivaceous, varii-gated.'the spinoiis dorsal edged with orange in life; 

 tins mostly liarred. P.ody rat her stout ; mucous pon-s on head unusu- 

 ally numerous. Month small; maxillary reaching middle of eye; pro- 



