Occasional Papers of the Museum of Zoology 1 1 



CVPRTNID.I; 



Caiiipostouia aiioiiiahmi (Rafinesque) 



PLATES 3 AND 4 



Caiiiposfoiiia calliptcryx Cope, Proc. Acad. Nat. Sci. Phila., 1864. 

 p. 284. flint on f/ic flint River, i^'hich empties into Saginaw Bay. 



Canipostonia niorniynis Cope, 1. c, p. 284. Bruce, Maeoinh County. 



Canipostonia. gobioninuni Cope, 1. c, p. 284. Bruce, Macomb County, 

 and Grosse Isle. 



Head 4; depth 3 1 '8; D. iii, /, i; A. iii. 6, i; scales 46 in 

 lateral line to caudal base and 3 more on latter ; 8 scales above 

 1. 1., and 7 below; snout 2 4/5 in head; eye 4 1/2; maxillary 

 3 7/8 ; interorbital 2 9/10; first branched dorsal ray i 1/3 ; anal 

 ray I 1/2 ; least depth of caudal peduncle 2 1/8; pectoral i 1/4; 

 ventral i ^/7 ; teeth 4-4. Body well compressed, upper pro- 

 file more evenly convex than lower, deepest at dorsal origin, 

 edges rounded. Caudal peduncle compressed, least depth about 

 I 5/7 its length. Head compressed, upper profile little more 

 convex and inclined. Snout about as long as broad, convex, 

 protruding a little. Eye little longer than deep, about first 3/7 

 in head. Mouth inferior. Mandible flattened below, homy 

 edge depressed or flaring out. Maxillary not quite reaching 

 eye, reaches hind nostril. Tongue obsolete. Nostrils close, 

 near eye. Interorbital broadly convex. Rakers about 10 -|- 22?, 

 short weak fleshy points. Pseudobranchi?e equal filaments, lat- 

 ter about 45 of eye. Predorsal scales 18, scarcely reduced. 

 L. 1. complete. Dorsal inserted midway between snout tip and 

 caudal base. Anal inserted opposite depressed dorsal tip, 

 nearer ventral origin than caudal base. Pectoral 4/5 to ventral, 

 latter inserted before dorsal or nearer snout tip than caudal 

 base, about 2/3 to anal. 



Color in alcohol brownish above, faded paler, especially be- 



