1922] NATURAL SCIENCES OF PHILADELPHIA. 11 



found in New Jersey and Pennsylvania examples of Boleosoma 

 olmstedi with pectorals equally as long as the Virginian, and the 

 variation present both in young and adult. I have seen breeding 

 males of Boleosoma nigrum inky or entirely black. Of the numerous 

 males of Boleosoma olmstedi the body or trunk never becomes 

 black, usually with some brown or olive, or at least noticeably 

 pale in contrast Moreover I have never seen a breeding male of 

 Boleosoma nigrum much over 63 mm., while the male of Boleosoma 

 olmstedi frequently reaches 25 mm. more. 



My Virginia specimens all agree at least with Arlina effulgens 

 ( irard, which appears to be the southern representative. It 

 approaches Boleosoma nigrum perhaps more closely than Boleoso?na 

 olmstedi, at least in its smaller size. 



Poecilichthys flabellaris (Rafinesque). Two. 



(2) My first collecting in Virginia was in a tributary of the 

 Dan River west of Danville, Roanoke basin in Pittsylvania County, 

 October 21, 1921. This stream is very clear flowing over a sandy 

 and gravelly bottom, and an excellent place to use a minnow seine. 

 In most places it was bare of obstructions and snags, and had many 

 pools of moderate depth. The fish were abundant mostly about 

 the little eddies and backwater pools, especially along the bends of 

 the stream. One deep stagnant pool, with simply a gravel bottom, 

 yielded a great lot of fish, as here they had evidently been en- 

 trapped during high water. 



Chrosomus oreas Cope. Frequent. 



Notropis procne (Cope). Five. 



Notropis ivhipplii analostanus (Girard). Series of 135, many 

 pale and none with the blue lateral band of Notropis niveus. One 

 example distorted with sigmoid pattern to the haemal region of 

 vertebral column vertically. 



Notropis cerasinus (Cope). Very abundant. 



Notropis photogenis amoenus (Abbott). Very common and 

 variable. 



Hybopsis kentuckiensis (Rafinesque). Abundant and all very 

 young. 



Catostomus nigricans Le Sueur. Young. 



Ameiurus nebulosus (Le Sueur). One young. 



Lepomis auritus (Linn6). Young. 



Boleosoma nigrum (Rafinesque). One. 



