1922] NATURAL SCIENCES OF PHILADELPHIA. 19 



Semotilus atromaculatus (Mitchill). Three examples, largest 

 90 mm. 



Notropis rubricroceus (Cope). Twenty-six, largest 70 mm. 

 The young of this species differ from those of Notropis coccogenis 

 in the dark lateral band distinct on the head and front part of the 

 body, also continuous around snout. Also its dorsal is flushed 

 with orange. Our largest example in alcohol shows the back and 

 sides forward nearly grenadine-red and rest of body more or less 

 flushed orange. Iris tinged with orange. In life these colors were 

 variably conspicuous, appearing only as a slight rosy flush, the 

 general appearance of the fish bright silvery white. The dark 

 line down the back medianly very distinct, especially on predorsal 

 region. 



Hybopsis kentuckiensis (Rafinesque). Twelve examples, largest 

 42 mm. Compared with Susquehanna River examples in the 

 Academy, from Pennsylvania, they agree in every way. The small 

 blackish spot at the caudal base is present in all. 



Poecilichthys inscriptus (Jordan and Brayton). 



Head 3f to 3f; depth 5 to 5|; D. X, i, 9 or 10; A. II, n, 5, 

 or 7, or i, 7; scales 44 or 45 in lateral line to caudal base and 2 more 

 on latter, though only one of last tubular; 5 scales above 1. 1. to 

 spinous dorsal origin, 7 below; 12 to 14 predorsal scales; snout 

 3f to 3^ in head; eye 3^ to 4|; maxillary 2>\ to 3f ; interorbital 

 lj to 1^ in eye. Body elongated, compressed, caudal peduncle 

 rather deep. Head large, front profile steep. Snout obtuse, 

 length about § its width. Eye high, greater than interorbital. 

 Mouth moderate, little inclined; lower jaw included. Maxillary 

 reaches pupil. Interorbital nearly level. Gill-rakers 2 +7, lanceolate. 

 Gill-membrane forms broad free fold across isthmus. Head and 

 breast naked. Scales with 11 to 13 basal striae, apical denticles 

 30 to 32, their basal elements in about four series, and circuli 

 moderate. Caudal slightly emarginate behind. Color when fresh 

 rich olive brown above, with reddish spot on most scales. Down 

 back six dark saddles, one just before spinous dorsal, second at front 

 dorsal spines, third at junction of dorsals, fourth at front of soft 

 dorsal, fifth close behind soft dorsal and sixth on caudal peduncle 

 near caudal. On sides, mostly below lateral line row of seven dark 

 olive blotches. Dark line from eye to snout tip, slightly on upper 

 lip. Cheeks, opercles and anal brilliant blue green, bar below eye 

 dusky. Fins pale, spinous dorsal with submarginal black band, 

 below and adjoining an orange one, and each membrane dusky 

 basally. Soft dorsal with about three pale dusky longitudinal 

 bands, same on caudal. Pectoral tinted with dull orange basally, 

 and six dusky cross-bars. Ventral whitish. Three examples, 38 

 to 65 mm. 



