57 G CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



with about 10 spines; anal fin with 2 spines, the second not very small. 

 Caudal lunate or truncate. Gill-rakers normal, but short. Air-bladder 

 present. In most warm seas. (Latin, imibra, shade; the name umbra 

 was used for the typical species by early writers.) 



a. Sides without vertical bars. 



905. I', roncador Jor. & Gilb. Yclloiv-Jinncd Roncador. 



Bright silvery, bluish above, with brassy reflections; sides with nar- 

 row, distinct, undulating streaks of deep olive, running from the head 

 and pectoral region upward and backward, with some abrupt curvatures, 

 to the base of the dorsal fin, sometimes alternating with lines of spots; 

 no vertical bars; cheeks pure white; fins mostly yellow; peritoneum 

 black. Body elliptical-elongate, the back somewhat elevated, the curve 

 from snout to dorsal regular. Head conical, bluntish. Mouth horizon- 

 tal, the maxillary extending to beyond front of pupil; eye moderate, 1 

 in snout, 5 in head, 1 in interorbital width. Caudal lunate, the upper 

 lobe the longer. Second anal spine strong, 2i in head, a little shorter 

 than third dorsal spine. Pectoral short and small, not reaching tips of 

 ventrals, and not half way to vent ; its length 1 in head. Head 3|; 

 depth 3. D. X-1, 27 ; A. II, 7 ; Lat. 1. 58. L. 15 inches. Point Coucep- 

 cion to Panama abundant; one of the handsomest of the Scirenoids. 



(Jor. & Gilb. Proc. U. S. Nat. Mus. 1881: Umbrina undulata Steimlachner, Ichthyol. 

 Beitiiige, iii, 21, 1875; not of Girard. ) 



aa. Sides with vertical bars. 



906. U. broussoiicti Cuv. & Val. 



Body with about 9 dark cross -bands, besides undulating streaks 

 along the rows of scales ; spiuous dorsal blackish. Body rather stout, 

 the back somewhat elevated; maxillary extending to pupil; preopercle 

 finely denticulate on its bony edge; barbel short; pectoral fins short 

 and small, not reaching to tips of ventrals nor half way to vent; 

 caudal truncate; second anal spine thick, f the length of the head. 

 Kvr .T r ; in head. Head 3 ; depth 3. D. X-I, 28; A. II, 7; scales 5-48- 

 10. West Indies, north to East Florida. 



(Cuv. & Val. v, 1H7 ; (Jiinther ii, "277; Jordan, Proc. U. S. Nat. Mus. 1880, 17: Urn- 

 brina conndoi Cm . A. Val. v, 1-7.) 



303. .IIEXTICIRRI'S Gill. 

 King-fish. 



(Gill, Proc. Acad. Nat. Sci. Phila. 1SG1, 86: type Perca alburnus L.) 



Body comparatively elongate, little compressed; head long, subconic, 

 the bluntish snout considerably projecting beyond the mouth; mouth 



