ADDENDA. 



23. CHASMISTES LIORUS Jordan, sp. nov. 



Big-mouihed Sucker of Utah Lake. 



1878 — Chasmistes fecundus Jvjhdax, Bull. Ilaydcu's Geol. Surv. Terr, iv, No. 2, 417. (Not 

 Caiostovms fecund us Cope & Yarrow.) 

 Chasmistes fecundus Joijr>/.N, p. 150 of the present work. 



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

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

 stomus fecundus, and my notes on tbeir typical specimens, witb the speci- 

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

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

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

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

 the smooth lips. 



28 {b). CATOSTOMUS FECUNDUS Coped Yarrow. 



Sucker of Utah Lake. 



1876— Catostomus fecu7idus Cope & Yaukow,Zoo1. Lieut. Wheeler's Exp!. W. 100th Mer. 

 G78, plate xxxii, figs. 1,1a. 

 Catostomus fecundus J oi.v.KX & CopelaisD, Check List, 156, 1-70. (Name ouly. 

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

 Jordan, Bull. Haydeu's Geol. Surv. 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 tbe form of the mouth and snout in the 

 figure of C. fecundus suggesting, tliough not resembling, tbe form of 

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

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

 a true Catostomus, and not a Chasmistes. 1 did not ascertain the lip 

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

 poor conditi9n, and I therefore am not now able to place it in the aua- 



219 



