FISHES 123 



B. n. maculaliccps Cope. Head spotted; cheek naked: Catawba 

 River, North Carolina; common. 



B. susana Jordan & Swain. Length 50 mm.; head 4; depth 65.; 

 color as in B. nigrum; rays of dorsal tins VIII- 10 or 11 ; anal I, 8; scales 

 4-45 to 50-6; head naked; body very slender: upper Cumberland River, 

 Kentucky; common. 



14. Vaillantia Jordan. Similar to Boleosomu, but with incomplete 

 lateral line: i species. 



V. camura (Forbes). Length 60 mm.; head 4 to 4.5; depth 5.5 to 

 6.5; color as in B. nigrum: rays of dorsal fms IX or X-io or 11; anal I, 

 7 or 8; scales 5 or 6-56 to 65-11; lateral line ending near middle of body; 

 cheek and opercle scaly: Indiana to Iowa; southward to Alabama and 

 Texas; common towards the south. 



Fig. (.0. i ,^;7 pellucidus {from Fishes of Illinois). 



15. Crystallaria Jordan & Gilbert. Body elongate and very 

 slender and hyaline; lateral line complete; cheek and opercle scaly; tail 

 forked; but i anal spine; premaxillaries not protractile; throat and 

 belly naked : i species. 



C. asprcUa (Jordan). Length 100 mm.; eyes very large; head 4 to 

 4.5; depth 7 or 8; color olive, mottled, with 4 or 5 dark cross bands on 

 the back and a dark lateral band; rays of dorsal fins XII to XIV- 13 to 

 15; anal I. 12 to 14; scales 7 to 10-98-10 (83 to 85 in specimens from 

 Alabama) : southern Indiana and Illinois to Alabama and Arkansas, 

 in swift streams. 



16. Ammocrypta Jordan. Similar to Crystallaria, but with very 

 protractile premaxillaries: i species, which has the habit of burying 

 itself in the sand. 



A. beani Jord. Length 60 mm.; head 3.75; depth 7.5; color trans- 

 lucent, without bars or spots; anterior dorsal fin spotted; rays of dorsal 

 fins VIII to X-io or 11; anal I, 9 or 10; scales 65 ; head and body naked, 

 except the caudal peduncle: Alabama to Louisiana; common in pine 

 woods. 



17. Vigil Jordan. Body very elongate, slender and hyaline; 

 belly almost bare ; premaxillaries protractile ; anal spine single : 3 species, 

 which burv themselves in the sand. 



