MYXOSTOMA PIDIENSE. 133 



I did Dot find any specimens of this species in tbe United States 

 National Museum. The types of velatus and collapsus, preserved in the 

 Museum of the Academy of Natural Sciences, at Philadelphia, I have 

 examined. 



16. MYXOSTOMA CONGESTUM (Baird & Girard) Jordan. 



Gibbous Sucker. 



ISZiCatostomus congestus BAIRD & GIRARD, Proc. Ac. Nat. Sc, Phila. 27. 



Ptychostomus congestus GIRARD, Proc. Ac. Nat. Sc. Phila. 172, 1856. 



Ptychostomus congestus GIRARD, U. S. Hex. Bound. Sorv. Ichth. 36, pi. xxi, f. 5-8,. 

 1859. 



Catostomus congestus GUNTHER, Cat. Fishes Brit. Mus. vii, 19, 1868. 



Teretulus congestus JORDAN & COPELAND, Check List, 157, 1876. (Name only.) 



Hyxostoma congesta JORDAN, Man. Vert. ed. 2d, 317, 1878. 

 1S7 '2 Ptychostomus bucco COPE, Hayden's Geol. Surv. Wyoming, 1870, 437. 



Teretulus lucco JORDAN & COPELAND, Check List, 157, 1876. (Name only.) 



HABITAT. Kansas to Texas. 



The original type of congestus, No. 171, from Eio Salado, Texas, col- 

 lected in 1851 by John H. Clark, seems to have disappeared from the 

 Museum. No description of the mouth has been given, except that it is 

 "very small- 7 . The species, therefore, probably has a mouth similar to 

 that of velatunij and, if so, is probably identical with the species since 

 described as P. lucco by Professor Cope. I have not seen the type of 

 P. litcco, and, therefore, can only suggest the probable identity of the 

 two ; but, as the matter is likely to remain long unsettled, it seems best 

 provisionally to unite them. U P. congestus 17 Cope Yarrow is certainly 

 not this species ; more likely a form of M. macrolepidotum. 



17. MYXOSTOMA PIDIENSE (Cope] Jordan. 

 Mullet of the Great Ped.ee. 



1870 Ptychostomus pidiensis COPE, Proc. Am. Philos. Soc. Phila. 471. 



Teretulus pidiensis JORDAN & COPELAND, Check List, 158, 1876. (Name only.) 

 Myxostoma pidiensis JORDAN, Man. Vert. ed. 2d, 317, 1878. 



HABITAT. Great Pedee Kiver, North Carolina. 



This appears to be a slender species, resembling U P. cervinus in color, 

 form, and size". Professor Cope obtained it in the Yadkin Eiver. I 

 have not seen it. Ko specimens are in the National Museum. 



