. Annotated catalog of type specimens in the Illinois Natural History Survey Fish Collection. Illinois. Natural History Survey Division; Fishes. 268 Illinois Natural History Survey Bulletin Vol. 35 Art. 5 less than inches. Present counts of fin rays are at odds: 9 dorsal rays (compared to 8 reported), and 9 anal rays (8 reported). However, there are about 55 scales in the lateral line as reported. The coelomic cavity is cut open and the pharyngeal arches are removed and placed in a separate glass vial. The pharyngeal teeth are as Forbes described, "stout, 2,4-4,2, hooked," althou
. Annotated catalog of type specimens in the Illinois Natural History Survey Fish Collection. Illinois. Natural History Survey Division; Fishes. 268 Illinois Natural History Survey Bulletin Vol. 35 Art. 5 less than inches. Present counts of fin rays are at odds: 9 dorsal rays (compared to 8 reported), and 9 anal rays (8 reported). However, there are about 55 scales in the lateral line as reported. The coelomic cavity is cut open and the pharyngeal arches are removed and placed in a separate glass vial. The pharyngeal teeth are as Forbes described, "stout, 2,4-4,2, hooked," although two teeth (one in each row) are missing from one of the arches. The specimen bears minute tubercles scattered over the dorsal surface of the head and snout, which is consistent with Forbes' mention of "snout ; Two labels accompany the specimen, one with the ink notation "Platygobio pallidus Forbes," and the other specifying Jordan and Evermann's (1896:326) number for the species P. pallidus (544). Its corresponding accession catalog entry reads "Ohio River, Cairo, 111., Sept. 23, 1879 Platygobio pallidus ; Further evidence of its holotype status is provided by Forbes' (1884:75) statement: "A single speci- men of this very rare species [P. pallidus], obtained in the Ohio River at Cairo, is the only one hitherto ; Taxonomic Status = Platygobio gracilis gracilis (Richardson 1836) Jordan and Evermann (1896:326) recognized Platygobio pallidus, but considered the species doubtful and perhaps based on the young of P. gracilis (Richardson 1836). Forbes and Richardson (1909:171) later concurred and referred pallidus to P. gracilis. Bailey (1951: 192) placed Platygobio (and several other "chub" genera) in the genus Hybopsis (Agassiz 1854). Olund and Cross (1961) studied geographic variation in H. gracilis and recognized two subspecies, H. g. gracilis and H. g. gulonella (Cope 1865), placing pallidus in synonymy
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Keywords: ., bookauthorillinoisnaturalhis, bookcentury1900, booksubjectfishes
