ADDENDA. 



23. CHASMISTES LIOEUS Jordan, sp. nov. 



Big-mouihed Sucker of Utah Lake. 



1878— Chasmistes fecuiidus .Tvjrdan, Bull. Hayden's Geol. Surv. Terr, iv, No. 2, 417. (Not 

 Catostomus fecund us Cope & Yarrow.) 

 Chasmisies fecundus Joijdax, p. 150 of the present work. 



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

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

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

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

 conclusion, hinted at in the text, that the (J/iasmistes is a species distinct 

 from C. fecundus, and thus far un described. The si)ecific name lioriis 

 {Xeloq, smooth; opoq, border) is therefore proposed for it, in allusion to 

 the smooth lips. 



28(6). CATOSTOMUS FECUNDUS Cope(& Yarroiv. 



Sucker of Utah Lake. 



1876— Catostomus fecundus Cope & Yarkow,Zoo1. Lieut. Wheeler's Expl.W. IGOth Mer. 

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

 Catostomus fecundus J oy.DA.yi & Copeland, Check List, 156, 1-76. (Name only. 

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

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



Habitat. — Utah Lake. 



As stated above, I at first identified Chasmisies 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, tbough not resembling, the form, of 

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

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

 a true Caiostomus, and not a Chasmisies. 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 tbe ana- 



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