FISHES 



129 



D. blennioides (Rafinesque) . Green-sided darter (Fig. 58). Length 

 125 mm.; head 4.5; depth 4.75 to 6; color oHve green; sides with about 

 8 double transverse bars and dotted with orange; second dorsal and 

 anal hns bluish green; rays of dorsal fins XII to XIV- 12 to 15; anal II, 

 8 or 9; scales 6-58 to 78-14: Pennsylvania to South Dakota; southward 

 to the Alabama basin and Kansas; common. 



9. Boleosoma DeKay. Body elongate; head pointed; premaxil- 

 laries protractile; vomer teeth present; scales large; belly with ordinary 



Fig. 58. — Diplesion blennioides {from Fishes of Illinois). 



scales; ventral fins well separated; anal fins usually with but one spine; 

 no red or blue in the coloration; pyloric casca mostly 6: 5 species- 



Key to the Species of Boleosoma 



ai Lateral line complete; tail fin rounded. 



bi Pectoral fins one-third or one-half longer than head. 



Ci Scales in lateral line 44 B. longinianus. 



Co Scales in lateral line 35 B. podostemone. 



h-i Pectoral fins about as long as head. 



Ci Head more or less scaly B. nigrum. 



c> Head naked B. susance. 



a'j Lateral line incomplete; tail fin emarginate B. camurum. 



B. longimanus (Jordan). Length 60 mm.; head 4.4; depth 5; color 

 green, with 10 small irregular spots on the sides and about 5 cross 

 blotches on the back; cheeks and breast naked; opercles scaly; rays of 

 dorsal fins X-13; anal I, ,8; scales 5-44-7: Virginia; abundant in rocky 

 streams. 



B. podostemone (Jordan & Jenkins). Length 50 mm.; head 4.4; 



depth 5.6; color yellowish green, with 7 or 8 dark spots along the sides 



and 5 or 6 larger ones along the back; fins barred; cheeks and breast 



naked; opercles scaly; rays of dorsal fins X-13; ^.nal I, 8; scales 4-35-6: 



Roanoke River; common. 

 9 



