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..The fishes of Illinois . Crystallaria asprella ( Jordan). Common Sculpm, Coitus ictalops (Kafmesque) AMMOCRYPTA SAND DARTERS 301 cent, of second); caudal lunate; anal I, 13 op 14; pectorals to head; separation of ventrals slightly less than their width at 8-10, 89-97, 9-11 [12-16]; lateral line nearly straight, 2 to 12pores usually lacking; cheeks naked or with a trace of scales, or abouthalf covered with very thin scattered scales, a few of which may be pecti-nate; opercles with a few pectinate scales on upper portion; nape scaled;throat, breast, and belly naked except
..The fishes of Illinois . Crystallaria asprella ( Jordan). Common Sculpm, Coitus ictalops (Kafmesque) AMMOCRYPTA SAND DARTERS 301 cent, of second); caudal lunate; anal I, 13 op 14; pectorals to head; separation of ventrals slightly less than their width at 8-10, 89-97, 9-11 [12-16]; lateral line nearly straight, 2 to 12pores usually lacking; cheeks naked or with a trace of scales, or abouthalf covered with very thin scattered scales, a few of which may be pecti-nate; opercles with a few pectinate scales on upper portion; nape scaled;throat, breast, and belly naked excepting (sometimes) a portion or all ofthe space in front of the ventral fins directly under pelvic girdle. A medium-sized and singularly interesting species, first discov-ered in this state in a rocky creek of the Mississippi bluffs in Hancockcounty, and since taken from the Rock River at Cleveland, Erie, andMilan, from the Little Wabash at Effingham, and from the Missis-sippi at East Dubuque, in the northwestern part of the state. Else-where it comes from G
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Keywords: ., bookcentury1900, bookdecade1900, bookidcu31924, booksubjectfishes