(). UiEMULON. 313 



the orbit. The basisphenoid is distingiiished by a very deep longi- 

 tudinal groove, arising from the condyloid process of the basioccipital. 



The intermaxiUaries are furnished with very elongate posterior 

 processes, much longer than the bone itself. Cuvier might have 

 placed this species in his family of Mcenides with greater propriety 

 than several species of Ccesio. The maxillary bone, as in most of the 

 species of Hcemulon and Pristipoma, is broadest near its base, where 

 it is hidden below the large praeorbital, the free part being narrow, and 

 nearly of equal width to the posterior extremity. The anterior part 

 of the vomer is slightly swoUen and rounded. The mandibulary 

 has four wide cavities below, separated from one another by delicate 

 transverse bones. The operculum has no prominent point, and is 

 irregularly quadrangular, the posterior side being sUghtly emarginate. 

 The prseoperculum has the strongest denticulations at the angle, the 

 posterior margin slightly concave and the inferior convex ; its muci- 

 ferous channel has four wide openings with thin bones between, as in 

 the mandibular channel. The prajorbital is very lai-ge, triangular, 

 with the inferior side cvu'ved ; three or four* muciferous cavities of 

 considerable width. Suprascapula with some denticulations. 



The exterior row of the maxiUaiy teeth, as well as of the mandi- 

 bulary, contains several larger conical teeth, and there is also a large 

 tooth at the posterior extremity of the row. 



There are eleven abdominal and fifteen caudal vertehrce, the 

 length of the former portion of the column being to that of the latter 

 as 1 : 1-44. The first interhaemal is strong, and equals the length of 

 the first eight vertebrae together. 



10. Haemulou caudimacula. 

 Cuv. ^ Val. V. p. 236. 



D.i|. A.|. 

 lb 7 



Caudalis forked. Brownish oblique streaks on the back and sides ; 

 a black spot on each side of the root of the caudal fin ; ventral and 

 anal fins blackish. {Cuv.) 



Coast of Brazil. 



11. Haemulon chrysopterum. 



Catcsby, Hist. Nut. Carol, ii. p. 2. pi. 2. f. 1. 



Perca chrysoptera, Lhin. St/st. Nat. i. p. 488 ; Linn. Gm. p. 1.314. 

 Lutjanus chrysopterus, Lacep. iv. pp. 186, 226. 



Haemulon chrvsopteron, Cue. Sf Val. v. p. 240; Dekay, New York 

 Zool. iv. p. 8.5. pi. 7. f. 22; Holbr. Ichth. S. Carol, p. 120. pi. 17. f. 1. 



^- TFtI- ^- I- ^- ^^^- ^3- ^- transv. 6/13. 

 The height of the body is 3^ in the total length, the length of the 

 head 3| ; the diameter of the eye is 3| in the length of the head, 

 and li in that of the snout. The cleft of the mouth is wide, the 

 upper maxillary reaching nearly to the vertical from the centre of 

 the eye. The praeoperculum \vith the posterior limb slightly emar- 

 ginate, and with rather stronger denticidations at the angle. The 

 dorsal fin notched ; spines slender, flexible ; the fourth longest, 2i 



