160 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY — III. 



t Fnutauelle well developed : lijis witliout evident cartilaginous sheath. 

 d. Dorsal fin comparatively long, of 12 to 14 rays. 



€. Mouth quite large, with very large lips, the upper lull and pendent, 

 with 6 to 8 rows of strong papillse : head large, 4^ in length, 

 rather narrow, quadrangular, the snout projecting : eye 

 large : dorsal fin much longer than high, its rays about 14 : 

 scales 12-72-10 : coloration rather dark ; a dusky lateral 

 stripe MACROCiiiLUs, 28. 



ee. Mouth comparatively small, smaller than in C. teres; the upper lip 

 thick, with 5 or 6 rows of xiapillaj, which are moderately 

 large : head rounded above, 4i in length, the jirofile steeper 

 than in C. teres, the snout more jioiuted, the two sides of the 

 head more convergent forwards : eye small : dorsal fin longer 

 than high, its rays 12 to 14: scales 13-72-10. 



OCCIDENTALIS, 29. 



dd. Dorsal fin short, higher than long, of about 11 developed rays : head 4^ 

 in length, rather bluntish : mouth moderate, the labial papilla) 

 largely developed, the upper lip full, with about 5 rows of 

 large but rather sjiarse papilla} : scales 12-74-10 : color dark 

 above; sides clouded with black and yellow.. .labiatus, 30. 



tt Fontanelle very small and nari-ow : both jaws with a weak cartilaginous sheath : 

 body elongate, fusiform, subterete, the greatest depth 4J to 4^ 

 in length : head small, conical, 4| ia length : month quite 

 large, with full, thick lips, the upper very wide and pendent, 

 with about 6 rows of very strong papilloo : lower lip two- 

 lobed, similarly papillose : interorbital space wide, convex : 

 eye elevated, posterior, quite small: fins moderate; dorsal 

 higher than long, with 10, rarely 11, rays: ventral rays 10: 

 scales small, crowded forwards, 10 or 9-70-8: color dark; 



scales with dark punctulations ar^opus, 31. 



**• Scales very small, much reduced and crowded anteriorly; 83 to 115 in the lateral 

 line, and 25 to 40 in a transverse series from the ventrals to 

 the dorsal : body and head more or less elongate : sides with a 

 broad rosy or orange lateral band in spring males. (Cato- 

 stomus.) 



^ Fontanelle well developed: jaws without evident cartilaginous sheath. 



/. Upper lip comparatively thin and narrow, with but few (3 or 4) rows 

 of papilla). 

 g. Body shorter than in the next, but still elongated, its greatest depth 

 4^ to 5 in length : head very large and long-acuminate, the 

 muzzle nearly one-half its length, overhanging the rather 

 large mouth : lips moderate ; the upper pendent, with about 3 

 rows of small papilla) ; the lower rather full, similarly papil- 

 lose: eye nearly median, rather small, 8^ in head: scales 

 small and crowded forwards, closely imbricated, 83 to 87 in 



