ADDENDA. 



23. CHASMISTES LIOKUS Jordan, sp. nov. 



Big-mouthed Sucker of Utah Lake. 



1&78 Chasmistes fecundus JORDAN, Bull. Hayden's Geol. Surv. Terr, iv, No. 2, 417. (Not 



Catostomus fecund us Cope & Yarrow.) 

 Chasmistes fecundus JOKDAX, p. 150 of the present work. 



Since pages 149-151 of tbe present work were in press, I Lave care- 

 fully recompared Cope and Yarrow's description and figure of their Cato- 

 stomus fecundus, and my notes on their typical specimens, with the speci- 

 mens on which the genus Chasmistes was based, and I have come to the 

 conclusion, hinted at in the text, that the Chasmistes is a species distinct 

 from C. fecundus , and thus far un described. The specific name liorus 

 (/?o?, smooth; o/?o<?, border) is therefore proposed for it, in allusion to 

 the smooth lips. 



28(6). CATOSTOMUS FECUNDUS Cope<& Yarrow. 



Sucker of Utah Lake. 



1876 Catostomus fecundus COPE & YARKOW, Zool. Lieut. Wheeler's Expl. W. 100th Mer. 



678, plate xxxii, figs. 1, 1 a. 



Catostomus fecundus JOKDAN & COPELAMD, Check List, 156, 1-76. (Name only. 

 Not Catostomus fecundus Jordan, Bull. U. S. Nat. Mus. xi ; nor Chasmistes fecundus 

 Jordan, Bull. Hayden's Geol. Suiv. Terr. iv,No. 2,417.) 



HABITAT. Utah Lake. 



As stated above, I at first identified Chasmistes liorus from Utah 

 Lake with this species from the same waters, the two being very sim- 

 ilar as to scales and fins, and the form of the mouth and snout in the 

 figure of C. fecundus suggesting, though not resembling, the form of 

 those parts in Chasmistes. The finding of one of the typical specimens 

 of Catostomus fecundus in the National Museum has shown me that it is 

 a true Catostomus 7 and not a Chasmistes. I did not ascertain the lip 

 characters of the. species while at the Museum, the mouth-parts being in 

 poor condition, and I therefore am not now able to place it in the aua- 



219 



