130 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY III. 



greatest abundance in the swift streams of the South, frequenting 

 especially the rapids or "shoals", and often throwing itself from the 

 water in its endeavors to reach some higher rock-pool. It is too small 

 and the flesh spoils too quickly to be much valued for food, but great 

 numbers are caught for " lun " by negroes and boys. The largest speci- 

 mens which I have seen were taken in the Chattahoochee, and are about 

 ten inches in length : ordinary individuals are four to six inches long. 



Specimens in United States National Museum. 



13. MYXOSTOMA ALBUM {Coi)e) Jordan. 

 White Alidlet. 

 1870 — Plychostomus alhus CorE, Proc. Am. Philos. Soc. Phila. 472. 



Teretulus albus Jor.DAX & Copelaxd, Check List, 158, 1876. (Name only.) 

 Myxostoma alba Jordan, jMau. Vert. ed. 2d, 310, 1878. 

 Habitat. — Catawba and other rivers of Eastern North Carolina. 



This species is well marked by the peculiar form of the under lip, 

 which is quite small — a narrow, regular crescent following the boundary 

 of the mandible, not full, as in the species previously noted, nor with 

 the sides folding so as to meet on the middle line, as in the remaining 

 species (excepting thalassinum). Specimens from North Carolina in the 

 National Museum correspond well to Professor Cope's description, except 

 that the back is rather more elevated than one would infer from Pro- 

 fessor Cope's remarks. The dorsal rays are 12 and 13 instead of 14. 

 The following are the measurements of two of them, 18,535 and 14,943, 

 both from Kinston, N. C. :— 



* Types. 



