Jordan and Evermann. — Fishes of North Avtertca. 853 



1240. HOLOCENTBIS OSCULUS, Poi y. 



D. XI, 15; A. IV, 10. Mouth small, the maxillary reaching first fourth 

 of eye. Scales deeply furrowed. Upper lobe of caudal longer. Red ; a 

 diffuse white blotch on side of belly and one on cheek. First three anal 

 spines whitish. Cuba. (Poey); not seen by us. (0At7(7HS, small-mouthed.) 



Holocenlrum osckJh)?), Poey, Meniorias, ii, 150, 1800, Cuba. 



Uolocentriwi perlattnn, Poey, I. c, 157, Cuba ; female sjieciinen with a white blotch behind tip of 

 each dorsal spine ; wautiug in type of osculmn, which was a male. 



1241. HOLOCENTRUS SANCTI PAl'LI, GUuthei. 



Head 3 ; depth 2^ ; eye 4 ; snout 4 ; interorbital width 5 in head, includ- 

 ing opercular flap. D. XI, 15; A. IV, 10; scales 48-3^. Maxillary not 

 reaching to vertical from center of eye. Operculum with a strong and 

 thick triangular spine, and with denticulatious beneath ; preopercular 

 spine broad, flattened, and cleft, or bifurcate at its extremity ; its length 

 3^ times in that of posterior edge of preoperculum ; third and fourth dor- 

 sal spines longest, a little less than half length of head ; soft dorsal 

 rather elevated, more than half height of body; caudal deeply forked, 

 upper lobe much longer than lower; third anal spine very sti"ong, 3 in 

 height of body. Ventral fins about f length of head, terminating at a 

 great distance from the anus ; pectoral shorter than the ventrals. Uni- 

 form red. Length 16 inches. St. Paul Rocks, mid-Atlantic. 



Bok>cenlnmi mncli-pmdi, Gi'NTHEn, Shore Fishes, 4, 1880, St. Paul Rocks. 



383. PLECTRYPOPS, Gill. 



Pleclrypops, Gill, Proc. Ac. Nat. Sci. Phila., 18G2, 2Z", {retrospinis). 



This genus differs from Holocentrus chiefly in having the preopercle 

 armed with three strong teeth curved forward. The preopercular spine 

 is moderate, and the third anal spine not greatly developed. One species. 



(Trh'/nTpov, spur; vtto, below; uTp, eye.) 



1242. PLECTRYPOPS RETROSPINIS (Guichenot). 



Head 2i in total length ; depth 2i D. XII, 14 ; A. Ill (?) or IV, 11. The 

 infraorbital arch is armed beneath with three long spines, curved and 

 directed forward ; the spines of the preorbital and of the posterior part 

 of the infraorbital arch with smaller spinous teeth. Both limbs of the 

 preoperculum denticulated, with a rather strong flat spine; operculum 

 and suboperculum armed with spinous teeth, the former with two long 

 spines, the lower of which is the stronger. Spines of the fins rather 

 slender; the soft portions of the dorsal and anal fins rounded, and as 

 high as the spinous. Caudal forked; scales deeply serrated. Uniform 

 red. Cuba. (Guichenot); rare. (>r/ro, backward ; .sj)iH((. spine : but the 

 spines are directed forward.) 



lloloci'ulrum reirospinis, Gdichinot, iu Ramon de la Sagra, Hist. Cuba, :5r>, jil. 1, fig. 3, 1S50, 

 Cuba. 



Holocenli-um prospinosum, PoEY, Memorias, ii, 343, 1861 ; after Guichenot. Substitute lor reiro- 

 spinis, as the spines turn forward and not backward ; G(Jntheb, Cat., i, 49, 1859. 



