1906.] NATURAL SCIENCES OF PHILADELPHIA, 425 



and sloping down in a curve till on middle of side of caudal peduncle, 

 and persisting on caudal to tips of median rays. 



Spinous dorsal inserted a little nearer tip of mandible than base of 

 last dorsal ray, graduated down from fom-th spine which is longest, 

 and edge of fin not notched. Rayed dorsal inserted nearly an eye- 

 diameter nearer base of caudal than eye, and graduated down from 

 second ray which is longest, though first and third but slightly shorter. 

 Spine of rayed dorsal less than half height of jfin. Spinous anal in- 

 serted nearer base of caudal than origin of ventral, second spine longest 

 enlarged, and falling about half an eye-diameter short of base of caudal. 

 Third anal spine long, slender, and but a trifle shorter than second. 

 Rayed anal graduated down from first ray which is longest, and about 

 equal to third anal spine. Caudal deeply emarginated, forked, lobes 

 pointed, apparently equal, and median rays about half length of upper 

 lobe. Pectoral broad, upper rays longest, and reaching about | to 

 spinous anal. Ventral inserted just behind base of pectoral, reaching 

 f of space to spinous anal, and spine about f length of fin. Vent a 

 trifle before tips of ventrals. 



Color in alcohol dull brassy-brown, with obscure olivaceous tints 

 above, and lower sm-face scarcely paler. Body also with shining or 

 silvery reflections in some lights. Lateral line brownish, not much 

 darker than body-color. Fins all more or less dilute brownish. 

 Spinous dorsal with greater median portion of each membrane largely 

 dusky-brown, and same of rayed dorsal and caudal, though basal 

 portions of membranes of these fins pale. Membrane between second 

 and third anal spines dusky. Outer front proximal regions of ventrals 

 tinted with brownish dustings. Iris dull brownish. 



Length 10^ inches. 



Type, No. 13,469, A. N. S. P. Eastern San Domingo. Prof. 

 William M. Gabb. 



Known to me from the single example described above. It is close to 

 the figure of C. mexicanus by Vaillant and Bocourt, which species 

 according to Dr. Regan is undovibtedly identical with C. parallelus. C. 

 gabhi differs from the aforementioned figure in the third dorsal spine 

 being shorter than the fourth, the shorter spine of the rayed anal, the 

 comparatively shorter second anal spine, which is but a trifle longer 

 than the third, and several other characters, such as the presence of 

 more preorbital serrse, etc. 



(Named for Prof. WiUiam M. Gabb, who collected fishes in San 

 Domingo.) 

 Centropomus heringi sp. nov. Fig. 2. 



Head 2f ; depth 3|; D. VIII-I, 10, i; A. Ill, 6, i; P. ii, 14; V. I, 5- 



