THE CYTRINODONTS. 131 



A comparison of types of this form with specimens H. spilargyreiis, 

 H. spiUtiwhen, and H. senegalensis will be necessary before deciding as to its 

 relationship or position. 



Haplochilus Johnstoni. 



Eaplochilus Johnstoni Gthr., 1893, P. Z. S. Lond., 627. 



D. 7 ; A. 12-13 ; LI. 29 ; Ltr. 7. 



" The height of the body is one fourth or one fifth of the total length, 

 without caudal ; the length of the head a little less than one fourth. Head 

 compressed ; snout somewhat depressed ; lower jaw projecting beyond the 

 upper. The width of the interorbital space is less than one half of the length 

 of the head. The diameter of the eye equals the length of the snout, and is 

 a little less than one third of the length of the head. The origin of the dor- 

 sal fin is twice as distant from the eye as from the root of the caudal, and 

 corresponds to the seventeenth scale of the lateral line or to the ninth anal 

 ray. Pectoral fin extending beyond the root of the ventral. None of the 

 fins elongate. Coloration of specimens in spirit uniform reddish olive ; a 

 fine bluish line runs along the scales of the lateral line. Several specimens 

 are sent from Fort Johnston ; they were collected in November; their length 

 is from 18 to 20 lines. Allied to Haplochilus Petersii (Sauvage), but differing 

 in various particulars." (GUnther.) 



Haplochilus spilargyreus. 



Pcrcilia spilargyreia Dum., 1861, Arch. Mus., X, 258. 



Epiplati/s seifascialus Gill, 1863, P. Phil. Ac, 1862, 136 ; Cope, 1871, P. Am. Phil. Soc, XI, '157. 

 Epiplatys spylargr/reia Gill, 1. c, 136. 



Haplochilus infrafuscialus Gth., 1866, Cat, VI, 313; Sauv., 1880, Nouv. Arch., Ill (2), 23; Steind., 

 1893, Notes Leyd. Mus., XVI, 76. 



Epiplatj/s infrafasciatm Cope, 1871, P. Am. Phil. Soc, XI, 457. 



Haplochilus spilargyreus Rochcb., 1883, Poiss. Seueg., 139 ; Sauv., 1880, Nouv. Arch., Ill (2), 23. 



D. 10 ; A. 14 ; V. 6 ; P. 14. (Dum.) 



D. 11 ; A. 14 ; V. 6 ; LI. 28 ; Ltr. 9. (Gth.) 



D. 11; A. 16; LI. 28-29; Ltr. Sf (Steind.) 



Depth about one fourth, and head near three tenths of the length of the 

 body. Head depressed, snout moderate, lower jaw projecting little beyond 

 the upper. Eye about two sevenths, forehead more than one half, and snout 

 nearly two fifths of the head. Snout as long as the eye, mandible much 

 longer. Dorsal origin midway from eye to end of caudal, opposite the nine- 



