[33] .REVIEW OF THE SCI/LNIDyE 375 



following the rows of scales above ; a black axillary spot ; region about pseu- 

 dobranchiae dusky. Head 3J; depth 3. D. X-I, 28; A. II, 6. Scales 6-48- 



7 Breviceps, 29. 



aa. Dorsal rays 24 to 26; mouth lower and less oblique, the snout more convex and 

 the profile descending forwards. 

 o. [Color white, with faint streaks and without vertical dark bars; second anal 

 spine long, nearly 2 in head ; body deep ; snout short, 5 in head; eye 3^ in 

 head; mouth large, maxillary 2 in head, lower mandible produced and 

 curved; a pore on each sido of the symphysis; gill-rakers long and slen- 

 der; teeth uniserial, numerous, and very small, those of the lower jaw 

 slightly larger ; pectorals lanceolate, reaching beyond vent, slightly longer 

 than head. Head 3£ in length ; depth 3. D. X-I, 25 ; A. II, 5.] (Poeij.) 



Stahli, 30. 

 cc. Color grayish, silvery below, with about seven dark vertical cross-bars ; sec- 

 ond anal spine short, 3^ in head. Body heavy forwards, much compressed, tho 

 back somewhat elevated ; profile convex ; snout veryvshort and blunt, 54; in 

 head; eye 4, about equal to the flattish interorbital area; mouth large, less 

 oblique than in other species ; tip of prem axillary on level of middle of pupil ; 

 maxillary 2 in head reaching to below posterior third of eye; lower man- 

 dible with a slight knob at its symphysis, a small pore on each side of it; teeth 

 minute, firm, in a single series in each jaw; pharyngeal teeth all long and 

 slender; the pharyngeal bones small and narrow, sub-triangular ; gill-rakers 

 extremely elon gate, as long as eye, 12 -f- 24 ; preopercle with minute cilia ; third 

 and fourth dorsal spiues about 2£ in head ; second anal spine short, one-fourth 

 shorter than the first anal ray ; scales large, ctenoid ; anal and soft dorsal with a 

 scaly sheath at base; color in life grayish olive above, with some silvery ; be- 

 low, clear silver white, back with 7 to 9 rather conspicuous darker vertical 

 bars extending to below middle of sides; fins dusky-olive; anal fin and lower 

 rays of caudal yellow, ventrals orange yellow, dusky towards tip ; lower side 

 of head very bright silvery; insido of mouth and lining of gill cavity, cheeks 

 and opercles, with some light yellow. Head 3i in length, depth 3. D. X-I, 

 24 to 26. A. II, 5 to 6. Scales 5-49-9 to 11 Fasciatus,31. 



28. LARIMUS ARGENTEUS. 



Amblyseitm argenteus Gill, Proc. Acad. Nat. Sci. Phila., 1863, 165 (West coast Cen- 

 tral America). 

 Larimus argenteus Jordan & Gilbert, Bull. U. S. Fish Com., 1882, 110 (Panama). 



Habitat. — Pacific coast of tropical America ; Panama. 



This singular fish is not uncommon about Panama, where several 

 specimens were obtained by Professor Gilbert. Of all the known spe- 

 cies of JSciamidw this one has the mouth most nearly vertical. There is, 

 however, in its structure nothing to warrant its separation as a distinct 

 genus, Amblyscion. Many specimens from Panama are in the museum 

 at Cambridge. 



29. LARIMUS BREVICEPS. 



Larimus breviceps Cuv. & Val., Hist. Nat. Poiss. , v, 146, pi. exl, 1830 (Brazil, San 

 Domingo). Storer, Syu. Fish. North Am., 321, 1846 (copied). Giinther, 

 Cat. Fish. Brit. Mus., ii, 268, 1860 (San Domingo). Giinther, Fishes Central 

 America, 387 and 425, 1869. Jordan & Gilbert, Bull. U. S. Fish Com., 1882, 

 107 (Mazatlan). Gilbert, loc. cit., 112 (Punta Arenas). Bean & Dresel, 

 Proc. U. S. Nat. Mus., 1S84, 158 (Jamaica). 



Habitat. — Both coasts of tropical America, north to Mazatlan and 

 San Domingo. 



