48 TELEOSTEI : EVENTOGNATIII. — XII. 



bluntish; eve moderate; C. lobes subeqnal ; D. ratber low, its 

 longest ray less than base, of tin. Coloration of preceding, the 

 tail as well as lower fins always red. J). 13 ; depth 31. Great 

 Lake-, iic Sometimes confounded with the next, from which it 

 is well distinguished, but it may intergrade with the preceding. 

 (Lat.. gilded.) 



<-c. Dorsal falcate, the free margin deeply incised. 



83. M. crassilabre * (Cope). Form of a Coregonus, with deep, 

 compressed body, small bead, and sharply conic snout, which over- 

 hangs the very small mouth; eye small, 5 in head. D. high, the 

 anterior rays 1 .^ to 1^ times base of fin; free margin of fin con- 

 cave, so that the fin is decidedly falcate. C. lobes very unequal, 

 the upper always longest; A. large, falcate, reaching beyond front 

 of C. D. and C. bright red. Head 5 to b\ ; depth 3} to 31; 

 lat. 1. 45. Ohio R. to N. C. (Ptychostomus crassilabris, conas, and 

 breviceps Cope; M. anisura Jor. & Gilb., not of Eaf.) (Lat. 

 crassus, thick; labrum, lip.) 



bbb. Dorsal lin quite small, of 10 to 12 rays; lower lip thick, truncate 

 behind. 



84. M. cervinum (Cope). Jump-rocks. Jumping Mullet. 

 Head very short, ratber pointed ; mouth rather large, the lips 

 strongly plicate ; eye small ; fins all small ; free edge of dorsal 

 straight, its longest ray less than head. Color greenish brown, a 

 pale blotch on each scale, these forming continuous streaks; back 

 with brownish blotches; fins brownish, scarcely red. Head 5; 

 depth 4. 1). 11. Scales 6-44 to 49-5. L. 10 inches. Ya. to Ga., 

 not rare. (Lat., tawny, like a deer.) 



47. PLACOPHARYNX Cope. (n\d£, a broad surface ; 

 (pdpvy£. pharynx.) 



85. P. carinatus Cope. A large, coarse sucker, externally 

 similar to the species of Moxostoma, from which genus it differs 

 only in the remarkable development of the lower pharyngeals and 

 their teeth; tin- bones are very strong, and 6 to 10 of the lower 

 teeth are enlarged, little compressed, with a broad rounded or 

 flattened grinding surface; the mouth is larger and more oblique 

 than in M. macrolepidotum and the lips are thicker. Head broad 

 and flattish above, its upper surface somewhat uneven; longest 

 rays of dorsal longer than base of fin, \\ in head; free edge of D. 

 concave ; upper lobe of C. narrower than lower, and more or less 

 longer. Color dark olive-green, the sides brassy; no silvery lustre ; 

 ('. and lower lin- orange-red. Head 4; depth 3£. D. 12. Scales 

 6-45-5. L. 30. Ohio to Ga. and Ark., abundant in larger 

 streams. (Lat., keeled.) 



1 This from notes of Dr. C. II. Gilbert, taken from Ohio R. 



specimens. 





