[11] REVIEW OF THE- SCIiENIDiE. 353 



brownish, the color extending on pectorals; anal white, the anterior part and 

 the tips of most of the rays yellowish, punctate with black; a dark blotch be- 

 hind the orbit and another on upper part of opercle. D.VIII-I, 20 or 21 ; A- 



II, 19; scales in the lateral line about 55 Remifek, 2. 



bb. Anal rays II, 16 or 17 ; depth 3£ in length ; head 3^; pectorals shortish, the upper 

 rays longest, li in head ; at least 100 series of scales from opercle to the caudal '■> 

 body much compressed ; upper canines very long, recurved ; three canines on 

 the sides of the lower jaw; caudal fin subtruncate ; color dark plumbeous 

 above, rest of body yellowish white ; no axillary spot ; an indistinct elongate 

 dark blotch from behind the eye to middle of opercle. D. VIII-1, 21 ; A. II, 16 



or 17 ; scales in the lateral line 52 to 54 Pauvipinnis, 3. 



aa. Distance between dorsals about equal to diameter of pupil ; soft dorsal with about 

 24 rays, its base about If times that of the anal (Archoseion). 

 c. Body more elongate than in the other species, with longer and sharper snout ; 

 ba'se of. anal fin 2£ in head; eye rather smaller than in A. rcmifer, 5$ in head; 

 snout 4^; maxillary 2-J-, reaching middle of eye ; gill-rakers rather long, X + 12; 

 upper jaw with a large canine in front ; two to four small canines on each side 

 of lower jaw; dorsal and anal sc-aly; pectoral long, 1^ in head; longest dorsal 

 spine 2-J ; caudal fin slightly lunate. Head 3£ iu length ; depth 4^-. D. IX-I, 

 24; A. I, 15; scales 64; color bluish, the sides and belly silvery; axil dark; 

 opercle dusky within Analis, 4. 



2. ARCHOSCION REMIFER. 



Isojnsthus remifer Jordan & Gilbert, Bull. U. S. Fish Com., 1881, 320 (Panama). 



Habitat. — Pacific coast of tropical America, Panama. 



This species is extremely close to Archoscion parvipinnis, differing only 

 in the characters mentioned in our analysis. It may perhaps prove a 

 geographical variety of the other. 



3. ARCHOSCION PARVIPINNIS. 



Ancylodon parvipinnis Cuv. &Val.,Hist. Nat. Poiss., v, 84, 1830 (Cayenne). Giinther, 

 Cat. Fish. Brit. Mas., ii, 312, 1860 (copied). 



Isoplstlius parvipinnis Jordan, Proc. Acad. Nat. Sci. Phila., 1883,289 (Cayenue, re-ex- 

 amination of type). Jordan, Proc. U. S. Nat. Mus., 1886, 588 (name only). 



Isopiisthus affinis Steindachner, Denksch. Mat. Nat. Kais. Acad. Wiss., 1879, 43, plate 2, 

 fig. 2 (Porto Alegre). 



Habitat. — Coasts of Brazil, north to Cayenne. 



Only the original type of this species iu the Museum of Paris has 

 been examined by us. This seems to be identical with the species well 

 figured by Steindachner under the name of Isopisthus affinis, and from 

 Steindachner's description and figure our account has been chiefly 

 drawn. 



4. ARCHOSCION ANALIS. 



Otolith us analis Jeuyns, Zool. Beagle, Fishes, 164, 1842 (Pern). Giinther, Cat, Fish. 



Brit. Mus., ii, 307, 1860 (copied). 

 Otolii hits peruanus Tschudi, Fauna Peruana Ichthyol., 10, 1344 (Peru). 

 Ancylodon altipinnis Steindachner, Ichthyol. Notizen, iii,2, plate l,fig. 2, 18G6 (West 



coast South America). 



Habitat. — Coast of Peru. 

 S. Mis. 90 23 



