1906. 



NATURAL SCIENCES OF PHILADELPHIA. 



467 



line to base of caudal, though pores much fewer; snout 4 in head, 

 measured from tip of upper jaw; eye 4; maxillary 1^; interorbital space 

 4 ; least depth of caudal peduncle 3 ; length lOf inches. 

 Bhaphiodon vulpinus Agassiz. 



Raphiodon vulpinus Cope, Proc. Amer. Philos. Soc. Phila., XXVII, 1877-78 

 (May 17, 1878), p. 688. Peruvian Amazon. Prof. J. Orton. 



Head ^ to 5 ; depth 4f to 5^ ; D. ii, 10 ; A. iv, 40 to 42, i ; scales about 

 120 in lateral line to base of caudal, and about 8 more on latter ; snout 3f 

 to Sf'o in head; eye 4^ to 4^; maxillary If to 1^; interorbital space 5^ 

 to 6; least depth of caudal peduncle 3^ to 3y^; length of body (caudal 

 damaged) 10 to 12f inches. Two examples in collections of 1873 and 

 1877. 



Cyuodon gibbus (Agassiz). 



Raphiodon gibbus Cope, Proc. Amer. Philos. Soc. Pliila., XVII, 1877-78 

 (May 17, 1878), p. 688. Peruvian Amazon. Prof. J. Orton. 



Head 4f to 4|; depth 3i to 3t; D. ii, 10; A. iv, 72, i to ii?, 83?, i; 

 scales 90 to 100 in lateral line to base of caudal; snout 3^ to 4 in head, 

 measured from tip of upper jaw; eye 3^ to 3f ; maxillary 1| to IJ; 

 interorbital space 3^ to 3^; least depth of caudal peduncle 3 to 3^; 

 length (caudal damaged) 6 to 6|- inches. Two examples in the collec- 

 tion of 1873. 



DISTICHODONTINiE. 

 Distichodus rudolphilGiinther. Fig. 52. 



Proc. Zool. See. London, 1896 (February 4), p. 223. Cotype, No. 14,559 

 (type), A. N. S. P. Lake Rudolf, Central Africa. Dr. A. D. Smith. 



Fig. .52. — Distichodus rtidolphi Giinther. 



