386 CALIFORNIA ACADEMY OF SCIENCES. 



a series of broad paired plates behind the dorsal fin, 

 lateral plates not keeled. Dorsal inserted a little in front 

 of the ventrals. 



. This genus is composed of a single species which is 

 restricted to Southeastern Brazil. 

 332, Harttia loricariformis. 



Harttia loricariformis Steindachner, Siisswasserfische Sitdostl. 



Bras, iii, 111, fig. 2 a. b. (Kio Parahyba); Eigenm. & Eigenm. 



Proc. Cal. Acad. 2d Ser. ii, 39, 1889 (Eio Parahyba; Itabapuana; 



Muriahe). 

 Habitat: Southeastern Brazil. 



Form broad, greatly depressed; depth about 2J in the 

 width which is one orbital diameter less than the length 

 of the head; the least width, immediately in front of the 

 caudal fin, is about equal to one diameter of the eye. 

 Head broad, depressed; occiput flattish, interorbital 

 slightly concave, anterior margin of the snout naked; 

 margin of the head with very fine movable bristles. 



Orbit 3J-4 in the snout, 6J-7i in the head, l|-lf in 

 the interorbital; mouth broad, teeth fine, very numer- 

 ous, lips rather narrow, thickly papillose. A series of 

 broad plates on the sides of the belly, a pair of rather 

 large anal plates and sometimes a few small plates in 

 front of them; ventral surface otherwise naked; the 

 azygos plate in front of the anal fin is roundish; lateral 

 plates without keels. Two or three plates bordering the 

 occipital. 



First dorsal ray thickened and flexible, its outer sur- 

 face with short bristles; dorsal fin higher than long. 

 Caudal short, slightly emarginate, its outer rays thick- 

 ened. 



Anal fin varying in height, 1-2 in the length of the 

 head. Ventrals reaching at least to origin of anal; pec- 

 torals to the second third of the ventrals. 



Back marbled; fins spotted. 



Head 3{~4; D. 8; A. 6; Lat. 1. 28. 



