304 Notes on the 



Lateral line complete, its cephalic half slightly decurved. ^Scales be- 

 tween nape and dorsal fin much crowded, being, as in P. promelas-, 

 much smaller in this region than on other parts of the body, 25 to 2T 

 in a series. 



Eye rather large, much larger than in P. promelas. 



Teeth, 4-4, first slightly hooked, and the grinding surface developed 

 on the first three. 



Last ray of dorsal fin | the length of the first ray. First dorsal ray 

 slightly nearer the base of the caudal than the tip of the snout. 



Peritoneum dark; alimentary canal about If times the length of the^ 

 body. 



Color olivaceous, more silvery than in the last species. The yoang 

 have a dark lateral band, and a dark spot at the base of the caudal fin. 



This species is found in large numbers in the southern end of 

 the lake, and in streams on the flats. Not very abundant at the 

 northern end of the lake, and in streams near Ithaca, above tlie- 

 falls. 



17. EXOGLOSSUM MAXIL LINGUA t L.e Sueur. 



(Cut-lips: Stone-toter.) 

 A., 308. B.,160. C.,22. 



"Pound by me, in small numbers, in Six-Mile-Oreek and Fall 

 Creek below the falls. It inhabits clear running water. 



In this species, the dentary bones are united throughout their 

 length; and on either side is a fleshy lobe, giving the lower jaw 

 the appearance of a hare-lip when viewed from the ventral side. 

 This character at once distinguishes this species from all others^ 

 of the family. 



18. NOTROPIS ANOGENUSt Forbes. 



Length of largest specimens, about 4^ cm. 



Head 4 to 4^ in the length of the body ; depth 3| to 4. Dorsal rays 8; 

 anal rays 8. Scales in the lateral line, 83 to 35. 



Body rather elongate, dorsal region prominent. Snout pointed ; 

 mouth very small, its gape making an angle of 45° or 50° with the axis 

 of the body. Maxillary reaching about f distance to vertical from 

 cephalic margin of the orbit, its length 4^ to 5 in the length of the 

 head. Margin of the upper lip on a level with the centre of the pupil. 

 Eye large, its diameter 3 in the length of the head. 



Pectoral fins small, their tips reaching f distance to ventrals ; tips of 

 ventrals reaching the vent. Lateral line nearly complete. Teeth 4-4^ 

 all hooked and with the grinding surface slightly developed. Scales- 

 bet ween nape and dorsal fin not crowded, about 14 in a series. 



