10 PROCEEDINGS OF THE ACADEMY OF [Vol. LXXIV 



slightly deeper lateral blotches on trunk. In young these blotches 

 obsolete. Caudal base brown. Iris brassy. Lips whitish, like 

 under surface of head. Fins pale, dorsal and caudal slightly 

 darker than others. Here described from 46 specimens, 48 to 120 

 mm. long. 



This species is only known from six examples previously, with 

 unknown locality. The reference to its original description in 

 the Proceedings of the U. S. National Museum for 1894 is erroneous, 

 as I find no mention of it either in the volume for that year or those 

 previously. The rediscovery of the species is therefore of some 

 interest. Its appearance somewhat suggests Catostomus nigricans, 

 though its greatly darker coloration above and greatly contrasted 

 white lower regions, very large lower fins, flat or slightly convex 

 interorbital, etc., will serve at once to distinguish it. 



Anguilla rostrata (Le Sueur). One adult. 



Lepomis auritus (Linne). One. 



Micropterus dolomieu (Lacepede). Two young. 



Hadropterus peltatus (Cope). One example. Compared with 

 Pennsylvania examples it shows a more pointed snout. 



Boleosoma nigrum effulgens (Girard). In searching for some 

 clue for the distinction of Etheostoma olmstedi Storer from Etheo- 

 stoma nigrum Rafinesque I examined the scales of both to test how 

 far the contentions of' Prof. Cockerell 1 would hold. Evidently his 

 materials were limited or the conclusions very hurriedly set forth. 

 \- a fact I have found specimens, usually young or half grown, 

 which in every way agree with his figure 16 of Boleosoma nigrum, 

 but which are really Boleosoma olmstedi. The apical teeth of the 

 scale, when free from the marginal membrane, is not always in- 

 dicated in scales from Boleosoma nigrum. Such is frequently the 

 case in Boleosoma olmstedi at all ages. The arrangement of the 

 subapical elements below the apical denticles is also very variable 

 and whether transversely elongated or subtriangular apparently 

 largely a mutter of age, certainly a condition of great variation. 



Etheostoma longimanus Jordan, and Etheostoma podostemone 

 Jordan and Jenkins, are both to be distinguished from Boleosoma 

 nigrum Rafinesque, according to Jordan, and Evermann, by their 

 much longer pectorals. Now the series of 46 examples before me 

 from Midway Mills shows the pectoral in half the series variably 

 longer than the head and in the other half equally shorter. I have 



1 Bull. Bur. Fisher., 32, 1912 (1913). p. 157. 



