796 FROCEEDIXaS OF THE NATIONAL MUSEUM. vol. xxx. 



This species differs from S. wieneri Sauvage in having the length 

 of head greater tlian the depth, and longer as compared with the entire 

 length; the snout shorter as compared with the interorbital space; the 

 eye smaller; the caudal lunate, and the scales larger. Our smaller 

 specimen approaches *S'. mu-nerl in size of e^^e and shape of caudal 

 more nearly than our larger one, though the specimen from which 

 Sauvage drew his description was consideraldy larger than our large 

 one. 



The following, extracted from Sauvage's description, will show the 

 degree of difference between these two species: Depth equal to length 

 of head, which is contained 4f in total length. Snout equal to inter- 

 orbital space. Ej^e, 2 in snout; 7i in head. Caudal, truncate. Lateral 

 line, 85. Length, 57 cm. 



Two specimens were collected at Callao, Peru, respectively 3<) and 

 45 cm. in length. The latter is the type. It is deposited in the 

 U. S. National Museum, Cat. No. 53464. 



The cotype is in Stanford University museum. 



I take pleasure in naming this species for Dr. C. H. Gilbert, to 

 whom 1 owe the l)est of ni}^ ichthyological training. 



74. POLYCLEMUS PERUANUS Steindachner. 



A single specimen from Callao, Peru, agrees ver}^ well with Doctor 

 Steindachner's description of the type. 



Head equals depth, 3| in length without caudal. Eye 6i in head; 

 interorbital space, 2f ; snout, 3|; maxillary, 3i; longest dorsal spine, 

 2; second anal spine, 4; longest soft anal ray, 2. Dorsal, X, 1, 23; 

 anal, 11, 8. Scales of lateral line, 55. 



This specimen does not show the dusky cross bands described by 

 Jordan and Eigenmann from cotypes of the species in the Museum of 

 Comparative Zoology." 



They descril)e the snout as l)eing 4| in length of head; and the eye 

 4|. The specimen at hand agrees better with Doctor Steindachner's 

 description (Schneuzenlilnge nicht ganz 4 mal; Augendiameter bei 

 erwachsenen individuen nahezu 6 mal). '* Caudal tin slightly lunate 

 or S-shaped '' '' does not adequately describe its shape. The lower half 

 of the tin is ohliipiely truncate, the upper half lunate, thus leaving the 

 tin angulated at the middle rays, which are as long as the angulated 

 upper lobe. 



75. MICROPOGON ALTIPINNIS Giinther. 



A small specimen was collected at Cxuayaquil, Ecuador, which agrees 

 in all essential characters with specimens from Panama. In compar- 

 ing this species directly with M. ectens Jordan and Gilbert, it can be 

 known at once by the enlarged scales on the side behind the pectoral 



«Rei)t. (T. S. Fisli Coiniu., 188(i, p. 415. 



^ Junlaii antl Eigenmann, liept. U. S. Fiyh Comni., 1886. 



