122 



VERTEBRATE ANIMALS OF THE UNITED STATES 



8 or 9; scales 6-58 to 78-14: Michigan to the Alabama basin and Kansas; 

 common. 



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

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





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Fig. 58. — Etheostoma blennioides (from Fishes of Illinois). 



scales; ventral fins well separated; anal fin with but one spine; no 

 red or blue in the coloration; pyloric cseca mostly 6: 5 species. 



B. nigrum (Rafinesque). Johnny darter (Fig. 59). Length 60 

 mm.; head 4.2; depth 5 or 6; color pale olivaceous; back speckled 

 with brown; sides with numerous small black blotches; males in spring 



Fig. 59. — Boleosoma nigrum {from Jordan b" Evermann) . 



black anteriorly; opercles scaly; rays of dorsal fins IX-12; anal I, 7 to 

 9; scales 5-44 to 55-9; scales rarely 35 to 40: eastern and central States; 

 western Pennsylvania to Colorado; Oklahoma to Manitoba; very com- 

 mon in most streams, especially in small ones among weeds. 



Subspecies of B. nigrum 



B. n. ohnstedi (Storer). Length 85 mm.; soft dorsal fin with 13 

 to 15 rays; cheek scaly: coastwise streams; south to Virginia. 



B. n. efulgens (Girard). Cheek and breast naked; color metallic 

 green: Maryland to North Carolina. 



B. n. vexillare Jord. Cheek naked; rays of dorsal fins VIII or IX- 10 

 to 12; anal I, 7; scales 4-35 to 47-6: Virginia; common. 



