NOTROPIS. 157 



transverse series from origin of dorsal to lateral line, 5 between lateral line and root of ventral tin. Lateral 

 line complete. Caudal peduncle 3 times as long as deep. A narrow dark lateral stripe ending in :i 

 small caudal spot. 



Hah. Mexico, Rio Nazas in Durango i {Meek). 



Here described from seven specimens, measuring up to 70 mm. in total length. 



4. Notropis sallsei. (Tab. XXV. fig. 3.) 



CeraticMkys sallmi, Giiuth. Cat. Fish. vii. p. 484 (1868) \ 

 Zophendum australe, Jord. Proc. U.S. Nat. Mus. 1870, p. 300 '. 

 Algansea sallcei, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1896, p. 212 \ 

 Azlecula mexicana, Meek, Publ. Columbian Mus., Zool. v. 1904, p. 61, fig. 15 '. 



Depth of bod}' 3 J in the length, length of head 4. Diameter of eye 5 in the length of head. Mouth terminal ; 

 snout rather obtuse. Dorsal 9, with 7 branched raj's ; origin nearer to base of caudal than to tip of snout ; 

 longest ray i or a little more than ^ the length of head; free edge straight or convex. Anal 8-9, with 

 6 or 7 branched rays. Pectoral | the length of head, not reaching the ventrals, which are inserted 

 slightly in advance of the origin of dorsal. 56 to GO scales in a longitudinal series, 8 or 9 in a transverse 

 series from dorsal fin to lateral line, 6 or 7 between lateral line and base of ventral fin. Lateral Iin(! 

 complete. Caudal peduncle about twice as long as deep. Brownish, with silvery stripes along the 

 series of scales. 



Ilab. Mexico, Rio Lerma and upper tributaries of the Rio Balsas and the Rio Panuco : 

 Lake Tupataro in Guanajuato " ; Rio San Juan in Hidalgo * ; Cuernavaca in 

 Morelos i. 



Here described from the types, three specimens of 70 to 85 mm., from Cuernavaca 

 (Boucard), with which I have compared several smaller specimens from San Juan del 

 Rio {Meek), received as A. mexicana. 



5. Notropis chihuahua. 



Notropis chihuahua, Woolman, Am. Nat. 1892, p. 260" ; Jord. & Everm. Bull. U.S. Nat. Mus. 



xlvii. 1896, p. 265 -. 

 Nototropis robustus, Meek, Publ. Columbian Mus., Zool. v. 1904, p. 66, fig. 17 '. 

 Nototropis chihuahua, Meek, t. c. p. 67, fig. 18 '. 



Depth of body nearly equal to the length of head, which is 4 in the length of the fish. Diameter of eye 

 3| to 31- in the length of head. Mouth terminal, slightly oblique ; jaws equal anteriorly ; snout 

 obtuse. Dorsal 9-10, with 7 branched rays. Anal 8-9, with 6 or 7 branched rays. Ventrals inserted 

 below or a little in advance of the origin of dorsal, which is nearly equidistant from tip of snout and 

 base of caudal. 33 to 38 scales in a longitudinal series, 6 to 8 in a transverse series from origin of 

 dorsal to lateral line, 4 or 5 between lateral line and base of ventral fin. Lateral line complete. Caudal 

 peduncle about 2i as long as deep. A dark lateral stripe usually ending in a caudal spot ; small dark 

 spots on the upper half of the body in the adult. 



Hab. Mexico, Rio Conchos in Chihuahua 1 2 3 4_ 



Here described from several specimens, measuring up to 70 mm. in total length. 

 Notroim santarosalias, Meek (Publ. Columbian Mus., Zool. v. 1904, p. 75, fig. 22), is 

 based on a specimen of about 45 mm., which may be a young example of N. chihuahua. 



