344 CALIFORNIA ACADEMY OF SCIENCES. 



and occiput; caudal emarginate; anal placed entirely 

 behind the dorsal; origin of ventrals equidistant from 

 bases of caudal and pectoral. 



Light brown; entire upper surface with rather large 

 dark brown spots; a series of larger dark spots along the 

 middle line of the sides, the spots becoming larger to- 

 wards the tail; caudal with a few, faint dark spots. 



Head 5h; D. 9; A. 7. 



281. Stegophilus macrops. 



Stegophilus macrops Steindacliner, Fhissfische Siidam. iv, 28, pi. vi, 

 fig. 2-2a, 1882 (Lake Manacajiuru, above Mauaos); Eigenm. & 

 Eigeum. Proc. Cal. Acad. 2d Ser. li, 55, 1889. 



Habitat: Lake Mauacapuru. 



This species is known only from the types; there are 

 no specimens in the Museum of Comparative Zoology. 



282. Stegophilus insidiosus. 



Sttijophilufi /«,s<(Z/o,s;(,v Reiuhardt, Naturliist. Foreu. Yidensk. Meddel. 

 1858, 79, pi. ii (Eio das Velhas); Glinther, Cat. Fish. Brit. Mus. 

 V, 276, 1864 (copied); Liitkeu, Vidensk. Selsk. Skr. 1875, 135 

 and i, figs. 1-3 (Eio das Velhas); E. & E. 1. c. 



Habitat: Eio das Velhas. 



283. Stegophilus reinhardtii. 



SlegophiluK 7^' i n har dt ii Uteindachner, Flussfische Stidam. iv, 28, pi. 



vi, fig. 1, 1882 (Lake Mauacapurn; Eio I(^a; Moutalegre; Teffe; 



Tabatinga); E. & E. 1. c. 

 Habitat: Solimoens aud tribi;taries. 



This species seems to have been collected at several 

 places during the Thayer expedition, but no specimens 

 could be found in the museum of Comparative Zoology. 



LXV. Vandellia. 



Vandellia Cuv. & Val, Hist. Nat. Poiss. xviii, 386, pi. 

 547, 1846 (cirrhosa). 



Type: Vandellia cirrhosa Cuv. & Val. 



This genus is very closely related to ^tegoj)hilu8 from 

 which it differs in the dentition and the position of the 

 mouth. 



Teeth pointed, in a single series on the intermaxil- 



