1906.] NATURAL SCIENCES OF PHILADELPHIA. 453 



broad and convex. Gill-opening forward about opposite front rim 

 of pupil. Rakers ii, 4 + 6, ii, rather thick and a trifle more than orbit. 

 Filaments f of orbit. Scales not striated. Color in alcohol brownish 

 with more or less silvery reflections. A narrow pale or grayish streak 

 from shoulder to base of caudal. A grayish blotch size of pupil at 

 shoulder, and a brownish tint at base of caudal medianly. Fins all 

 plain pale brownish. Iris brassy-brown. Length 3f'^ inches (caudal 

 damaged). 



This example shows the anal rather more enlarged anteriorly than 

 Cope's figure, and also the scales more evenly enlarged in the costal 

 region. 



Charax gibbosus (Linnaeus). 



Head 3|; depth 2^*0; D. 11, 9; A. 11, 51; snout 3^ in head, measured 

 from tip of upper jaw; eye 3^; maxillary If; interorbital space 3f ; 

 least depth of caudal peduncle 3^. Surinam. Dr. Charles Hering. 

 A single small example in poor preservation about 3 inches long. 



The genus Charax Scopoli as here understood has Salmo gibbosus 

 Linnaeus as its type. 

 Charax tectifer (Cope). 



Anacyrtus tectifer Cope, Proc. Amer. Philos. Soc. Phila., XI, 1869-70 



(August 19, 1870), p. 565. Type, No. 8,175, A. N. S. P. Pebas, Equador. 



John Hauxwell. 



Anacyrtus sanguineus Cope, Proc. Acad. Nat. Sci. Phila., 1871 (1872), p. 



266, PL 9, fig. 1. Cotypes, Nos. 8,176 (type) to 8,186, A. N. S. P. 



Ambyiacu River. John Hauxwell. Cope, Proc. Amer. Pliilos. Soc. 



Phila., XVII, 1877-78 (May 17, 1878), p. 686. Peruvian Amazon. 

 Prof. J. Orton. 



Head 3^; depth 3; D. 11, 9; A. iii, 42, this fin damaged posteriorly, 

 a fact overlooked apparently by Cope, which would thus account for 

 "A. 37"; P. I, 12?; V. i, 7; scales about 46? (squamation injured) in 

 course of lateral line to base of caudal; there are also probably 12? 

 scales between lateral line and origin of anal, instead of 10 as noted by 

 Cope; width of head 2f in its length; depth of head, over middle of 

 or!)it, about If; snout 4; eye 3|^; maxillary If; interorbital space 3^; 

 mandible If; least depth of caudal peduncle 3f . The other characters 

 do not appear to me to differ from those of Anacyrtus sanguineus 

 Cope. The palatine teeth(?) are obsolete, due possibly to preservation. 

 Coloration, as described by Cope, also agrees with A. sanguineus. 

 Further, it may be stated that the anterior free margins of the nasal 

 bones are not more prolonged than in A. sanguineus, and overhang 

 the nostrils in a similar manner. Type of Anacyrtus tectifer Cope. 



The cotypes of Anacyrtus sanguineus Cope show: Head 3| to 3f ; 

 depth 2t to 3; D. 11, 9; A. iv, 39, i to iv, 41, i; scales 46 to 52 in lateral 



