1894.] 80 [Cope. 



extremity of the maxillary booe is in line with the posterior border of the 

 orbit. The pectoral fin reaches the base of the ventral, but the ventral 

 does not quite reach the anal. 



The color is silver, with greenish and bluish reflections. A large black 

 spot at the base of the caudal, and a smaller one behind the epiclavicle. 

 No lateral band. 



Total lengtl), 177 mm. ; length to base of caudal fin, 145 mm. ; length 

 to base of anal, 89 mm. ; length to base of ventral, 63 mm. ; length of head, 

 37 mm. 



This species is near the X. hepsetus Cuv. From the full description 

 and figures given by Steindachner,* we learn that in that species, both 

 the body and head are of more slender proportions at all ages, and that 

 the interorbital diameter is relatively narrower. It possesses also a silver 

 lateral band which terminates in a black stripe on the caudal peduncle 

 and fin. The scale and raj'^ formulte are the same in the twospecies. 



The X. jenynsii Gthr. was thought by Steindachner to be identical with 

 the X. hepsetus, but he subsequently concluded that it is distinct (see Sitz- 

 her. Wien Akad., 1891, p. 871). It is evidently very near the latter, 

 and has a more slender form of head and body than the X. brachyceplia- 

 lus. The depth enters the length, according to Steindachner, 3.3 to 3.5 

 times ; and the length of head enters the length 3.5 to 3.6 times. The 

 interorbital width is less, entermg the length of the head 4 to 4.5 times. 

 Scales of lateral line 56-63. 



Two specimens. 



XiPHORHAMPHTJS HEPSETUS CuV. Stcind,, I. C. 



Two specimens. The smaller measuring 179 mm., agrees with Stein - 

 dachner's description, but the larger, 215 mm., differs in exceeding the 

 proportions given as characteristic of old individuals. Thus the scale 



17 14 



formula is 76 ; the highest figures given by Steindachner being j^. The 



eye enters the total length of the head 5.5 times ; the highest relative 

 proportions of Steindachner's description being 4.66 times. In both 

 specimens the length of the head exceeds the depth of the body. 



AsiPHOKiCHTHYS STEN0PTERU8 Copc, Amcj'. Naturalist, 1894, p. 67. 



Char. 5f«7i..— Subfamily Hydrocyoninse. Teeth on premaxillary, maxil- 

 lary and dentary bones ; the first in two series, the last in one ; those of 

 both of unequal lengths. Dorsal fin short, above the anterior rays of the 

 long anal. No lateral line of pores, except on a few anterior scales. 

 Gill-rakers lanceolate. 



This genus is Anacyrtus without a lateral line of pores. 



Char, specif. — Dorsal outline elevated; profile of cranium concave; 

 mouth directed obliquely upwards. Scales 42, 20. Fin radii, D. 11 ; A. 

 46, the anterior three shorter ; V. 9 ; P. 15. Depth of body 2.66 times in 



* SUzungsber. K. Wien Akad. Wiss., Nov., 1876, p. 35. 



