1908. j NATURAL SCIENCES OF PHILADELPHIA. 551 



orbital broad, width -| its length, latter 1^ in eye. Other suborbitals 

 narrow. Gill-opening last f in head, nearly to hind eye margin. 

 Rakers 2 + 5 points, about 3 in filaments, latter If in eye. Pseudo- 

 branchiae large, little less than filaments. Isthmus level, least widtli 

 nearly 2 in eye. Teeth 1?, 4-4, 1?, hooked, compressed, grinding 

 surfaces narrow. Scales rather large, crowded on predorsal and breast, 

 more exposed along sides medianly. Pointed scaly axillary ventral 

 flap 5 in fin. L. 1. complete, first decurved till about midway along 

 side. Tubes simple, over first f of exposed scales. Dorsal origin mid- 

 way between eye front and caudal base, first branched ray longest, fin 

 2 to caudal base. Anal origin little behind dorsal base, first branched 

 ray longest, fin 1-g- to caudal base. Caudal forked, lobes pointed, 

 tips (damaged) about equal. Pectoral pointed, upper rays longest, 

 fin I to ventral. Latter inserted about opposite dorsal origin, reaches 

 anal. Vent close before anal. Color in alcohol dull brownish, below 

 paler. Head and trunk below with pale silvery reflections. Iris pale 

 silvery. Fins pale brownish. Length 3j inches (caudal damaged). 

 No. 5,061, A. N. S. P., type of C. micropogon Cope. Conestoga Creek 

 in Lancaster County (Stauffer). 



Head 3^ to 4; depth 3f to 4f ; D. iii, 7, i; A. iii, 6, i usually, rarely 

 iii, 7, 1 ; scales usually 35 to 40, sometimes 33 or 34, rarely 32 or 41 + 

 usually 3, rarely 2; scales above 1. 1. usually 7, frequently 6; scales 

 .below 1. 1. usually 5, frequently 6, rarely 4; predorsal scales usually 

 16 to 19, occasionally 20, rarely 14 or 24; snout 2^^ to 3 in head; eye 

 3| to 7; maxiflary 2^ to 3^; interorbital 2^ to 3^; teeth usually 0, 4-4, 

 0, occasionally 1, 4-4, or 1, 4-4, 1, rarely 1, 4-4, 2. Body com- 

 pressed, robust. Head large, broadly rounded above. Snout convex, 

 blunt, rather long. Eye small, high, round, larger in young. Mouth 

 large, little inclined, mandible slightly shorter. Maxillary not quite 

 to eye, ending in barbel. Interorbital broadly convex. Rakers 2 + 5 

 short bony points. Scales well exposed. L. 1. complete, little decurved. 

 Dorsal origin midway between snout tip and caudal base. Anal 

 inserted behind dorsal base. Caudal emarginate, broad lobes rounded. 

 Pectoral H to ventral, latter inserted opposite dorsal origin, reaches 

 vent. Color olivaceous above with bluish tints. Sides with pale 

 greenish on white and silvery. Below white. Fins pale orange. 

 Spring males with head and belly blushed rosy, crimson spot on side 

 of former, high adipose-like crest on forehead, and snout with large 

 tubercles. Silvery iris, then orange and greenish. Young olivaceous 

 above, silvery below, and dusky band along side medianly. Length 

 lye ^^ 9| inches. Many examples: from the Susquehanna R. basin in 



