152 PROCEEDINGS OP THE ACADEMY OF [1883. 



This species appears to have been about eighteen inches in 

 length. The only skull which represents it was found by Charles 

 H. Sternberg, near Silver Lake, Oregon. 



Catostomus tahoensis (tHi hii I Jordan. Synopsis Fishes N. Amer., 127. 



This is the common species of the lakes which represent the 

 Lahontan Basin. I found it in Pyramid Lake and the third 

 Warner Lake. The formulae are as follows : 



Pyramid Lake: scales 14-89-14; radii D. I. 11 ; Y. 9; head 

 4'5 times in length. 



Warner Lake: scales 16-83-15; radii D. I. 11; V, 9 ; head 4 



times in length. 



PERCOMORPHI. 



TIRANIDEA Dekay. 



Uranidea minuta Pallas. Jordan Synopsis, p. C98. 



Abundant in Klamath Lake ; not seen elsewhere. 



General Remarks. 

 The species noticed in the preceding pages may be enumerated 

 with reference to their geographical distribution, in the following 



lists : — 



I. Pyramid Lake. 



Salmo purpuratus henshavi Siphateles lineatus Cope. 



Jord, Squalius galtiee Cope. 



Leucus olivaceus Cope. Chasmistes cujus Cope. 



Leucus dimidiatus Cope. Catostomus tahoensis G. & J. 



II. Fort Bidwell. 



Apocope vulnerata Cope. Apocope ventricosa Cope. 



III. Warner's Lake. 

 Apocope vulnerata Cope. Catostomus tahoensis G. & J. 



Myloleucus formosus Gird. 



IV. G008E Lake. 

 Myloleucus parovanus Cope. Catostomus labiatus Aj'tes. 

 3Iyloleucus thalassinus Cope. 



V. Klamath Lake. 

 Salmo purpuratus Pall. Chaamistes hrevirostris Cope. 



Salvelinus malma Walb. Chasmistes luxalus Cope. 



Myloleucus parovanus Cope. Catostomus labiatus Ayres. 

 Squalius coeruleus Gird. Uranidea minuta Pall. 



Squalius hicolor Gird. 



