56 TELBOSTEI: EVENTOGNATHI. XII. 



"Whether a variety or a distinct species is not certainly known. 1 ) 

 (fTcpos, different ; oSovs, tooth.) 



dd. Lateral line complete. (Afiniellus Jordan.) 

 f. Lips thin, not fleshy ; scales before D. large, in 13 to 17 rows. 

 g. Body rather elongate, the depth less than the length. 



100. N. procne (Cope). Slender, with the tail long; snout 

 blunt; mouth inferior, small; 13 scales before D. ; eye large. Oli- 

 vaceous, a dark lateral band. Head 4f ; depth 5. Scales 5-32-3. 

 A. 7. L. 21. W. N. Y. to Md. (TrpAewj, a kind of swallow.) 



101. N. fretensis (Cope). Slender, compressed; mouth oblique; 

 eye 3| in head ; 1 7 scales before D. ; lateral line decurved. Olive, 

 a plumbeous lateral shade and dark spot at base C. Head 4; 

 depth 5. A. 8. Scales 6-35-3. L. 2^. Great Lake region (un- 

 known to me.) (Lat., inhabiting straits, i. e. Detroit R.) 



102. N. spectrunculus (Cope). Body elongate, head large and 

 broad ; eye 3 in head ; snout thick ; mouth terminal, oblique ; pre- 

 maxillaries in front on level of middle of pupil ; 15 scales before D. 

 Olivaceous, dark above, a plumbeous lateral band and distinct 

 black caudal spot ; $ with fins orange. Head 4 ; depth 5^. A. 9. 

 Lat. 1. 37. L. 3. Tenn. R. (Lat., a little image.) 



103. N. deliciosus (Girard). Body stoutish, little compressed; 

 head rather broad, the mouth small, inferior, horizontal; snout 

 obtuse; eye large, 3 in head; 12 to 15 scales before D. Pale 

 olivaceous, sides usually pale ; sometimes with a dusky stripe, but 

 no dark C. spot. Head 4; depth 5. L. 2J. Great Lakes to Va. 

 and Texas; an insignificant little fish. Variable, running into 

 several varieties. Var. deliciosus, Mo. and S. W., lat. 1. 32 to 35; 

 var. stramineus Cope, Miss. Valley, lat. 1. 34 to 38 (5-36-4) ; var. 

 longiceps Cope, Va., lat. 1. 33 to 36 ; a distinct lateral stripe, snout 

 longer and fins higher; var. volucella Cope, Mich., snout longer; 

 fins longer ; P. reaching V. 



gg. Body rather stout, the depth more than \ the length. 



104. N. topeka Gilbert. Body compressed, stout; snout blunt; 

 mouth small, terminal, oblique ; eye 4 in head ; 14 scales before 

 D; lateral line anteriorly decurved. Olivaceous, a dusky lateral 

 streak, ending in a small caudal spot ; males with sides and fins 

 bright red. Head 4; depth 3|. A. 7. Scales 5-35-4. L. 2|. 

 W. Iowa to Kans. 



ff. Lips thick, fleshy. 



105. N. phenacobius Forbes. Mouth small, inferior; body 

 short and deep; snout long; eye very large, 3 in head; breast 

 naked ; fins low. Head 4 ; depth 3f . A. 8. Lat. 1. 35. L. 2J. 



i See Gilbert, Proc. U. S. Nat. Mus., 1884, p. 207. 



