l68 GILBERT 



Four small specimens, the largest 66 mm. long, agree with C. 

 chiysurtis in all respects in which this species is said to differ from C. 

 ectemirus. Compared with two specimens of C. ecteniirus^ 85 mm. 

 long, from Jamaica (collector, J. S. Robert), these Brazilian specimens 

 show a much deeper body, with a much more strongly arched abdom- 

 inal profile, which rises rapidly toward the snout and also along base 

 of anal fin. The eye is also larger, 2\ in head, and the chord of the 

 curved portion of lateral line is contained if times in the straight por- 

 tion. In the young C. cctenurus referred to, the eye is 3^- in the head, 

 and the chord of the curved portion of the lateral line is contained if 

 times in the straight portion. 



D. VIII-I, 27; A. II-I, 26. Depth of body 2\ to 2\ in the 

 length. Depth of caudal peduncle i|^ to i^ in its length (the latter 

 measured from base of last dorsal ray to base of first caudal ray). 



The two species are probably valid, with their ranges overlapping. 



The young specimens of C ectenurus here referred to are not men- 

 tioned among the types of this species. They are from the same 

 locality as the types, and were sent in by the same collector. They 

 are numbered 4966 in the register of the Zoological Museum of Stan- 

 ford University. 



38. Trachinotus falcatus (Linnasus). 

 Maceio. 



39. Apogon brasilianus new species. 



Type 61 mm. long. Mamanguape stone-reef, Brazil. June 23, 

 1899. A. W. Greeley, collector. 



Closely related to A. i?nberbis and A. dovil, but without trace of a 

 black spot on caudal peduncle. This spot becomes obscure with age 

 in A. dovii and probably also in A. iinberbis and may be wholly 

 wanting in adults ; but it is always conspicuous in young specimens of 

 the size here described. 



Total length 62 mm. 



Length to base of caudal 47 mm. 



Head (to end of opercular flap) 38 



Snout .09 



Interorbital width 09 



Eye 13 



Maxillary 20 



Pectoral 24 



Ventral 21 



Highest (2d) dorsal spine 16 



Highest soft dorsal ray 23 



Distance from last dorsal spine to first soft ray 08 



