262 



PROCEEDINGS OF THE ACADEMY OF 



[June^ 



the preceding a little in the fins, scales, etc., and therefore it may 

 provisionally be retained as a distinct form until satisfactory com- 

 parisons can be made. 



CENTROPRISTIN^. 

 To replace Serraninoe, as Serranus replaces Epinephelus. 



Hypoplectrus unicolor crocotus (Cope). Fig. 4. 



Plectropoma crocota Cope, Trans. Amer. Philos. Soc. Phila., (2), XIV, 1&^71, 

 p. 466. Cot}T)es Nos. 13,291 (type) and 13,292, A. N. S. P. St. Martin's, 

 West Indies. Dr. R. E. van Rijgersma. 



Width of head 2^ in its length; interorbital space 5 in head measm-ed 

 from tip of upper jaw. Body compressed and edges rounded. Caudal 

 peduncle compressed. Head compressed, also snout and sides a little 

 flattened, and its width about | its length. Rami of mandible ele- 



Fig. 4. — Hypoplectrus unicolor crocotus (Cope). (Cotype of Plectropoma crocota 



Cope.) 



vated a little inside mouth. Teeth erect in jaws, in rather narrow 

 bands in front with some of inner a little large and others becomin"; 

 smaller posteriorly. Outer series a little enlarged along most of edge 



