1908.] NATURAL SCIENCES OF PHILADELPHIA. 523 



grayish, other fiiis whitish. Several large tubercles on muzzle. 

 Length 2y\ inches. One example from Port Allegany (McKean Co.) 

 on June 2d, 1906 (Keim and Fowler). 



The above is the only example I have secured from our limits. 

 Tliis fish prefers sluggish brooks or pools and varies greatly with 

 season, age or sex. The head is almost globular in adult males. It 

 is interesting in the aquarium. It feeds on green algse and mud, and 

 is sometimes met with in muddy pools. Only reaching a length of 

 3 inches it is of no use as a pan fish. Found west of the Alleghanies. 

 Pimephales notatus (Rafinesque). 



Head 3| to 4f ; depth 4 to 5; D. iii, 7, i; A. iii, 6, i; scales 37 to 

 45 + usually 2, seldom 3, rarely 1; usually 7 scales, sometimes 6, 

 above 1. 1.; usually 4 or 5 scales, rarely 3, below 1. 1.; 20 to 30 pre- 

 dorsal scales, usually 22 to 26; snout 3 to 3f in head; eye 2^ to 4^; 

 interorbital 2 to 3; teeth 4-4. Body somewhat elongate, moderately 

 compressed. Head robust, convex. Snout blunt, convex. Eye 

 circular. Mouth small, low. MaxiUary to hind nostril. Rakers 

 about 4 + 7 short weak points. Scales narrowly imbricated. L. 1. 

 complete in adult. Dorsal origin midway between snout tip and caudal 

 base, second simple ray detached from third. Anal behind dorsal 

 base. Caudal forked, lobes rounded. Pectoral f to ventral, latter 

 inserted about opposite dorsal origin and reaching first branched 

 anal ray base. Color olivaceous. Head blackish, gill-opening edged 

 buff, in spring males, otherwise buff. Iris black and bronze. Pale 

 dusky lateral diffuse band. Dorsal brownish, edge whitish, base black- 

 ish. Caudal dull olive, other fins paler. Large tubercles on muzzle of 

 spring males. Length ly\ to 3yV inches. Many examples: from 

 the Kiskiminitas R. ; Cole Grove and Port Allegany (McKean Co.); 

 York Furnace (York Co.); Foxburg (Clarion Co.); Erie (Erie Co.). 



Closel}' resembling the preceding, especially when young, but dis- 

 tinguished by its more inferior mouth, rather more slender body, and 

 slightly protruding blunt snout. The 1; 1. is variable, though absent 

 in the young of both species it soon appears in the present. It is found 

 in most of our western streams, though extending into the Susquehanna 

 and thus farther east than the last. I have not found it in the Dela- 

 ware. It prefers quiet streams and pools, often when muddy, and 

 associates with other small fishes. It is variable in color, spring males 

 being strikingly colored, though otherwise both sexes are pale olive 

 with a dark blackish lateral band ending in a l)lack caudal spot. A 

 good bait minnoAV, as it is active and tenacious, reaching 4 inches in 

 length. 



