334 MEMOIRS OF THE CARNEGIE MUSEUM. 



A broad, dark stripe with notched edges from opercle to middle of caudal, 

 bordered above and below by light bands; an irregular series of spots below the 

 lower light band; a series of small spots more or less confluent forming a narrow, 

 dark stripe above the upper light band; back and fins lightly spotted, a short dark 

 bar in front of the opercle, a longer one above middle of pre-opercle. 



55. Pygidium davisi Haseman. (Plate LI, fig. 5.) 

 Pygidium davisi Haseman", Aim. Carnegie Mus., VII, 1911, p. 3S0, pi. LXXVII, 



fig. 1, and pi. LXXVII. 



Habitat. — Coastal streams of southern Sao Paulo. 

 2862, and2 861, C. M., type and paratypes. Rio Iguassu near Serrinha Parana. 



. Dec. 23, 1908. Haseman. 

 7116a-d, C. M., 52-60 mm. Morretes, Parana, Brazil. Jan. 4, 1909. Haseman. 



Head 5.5; D. 7; A. 5 without the imbedded rays; D. 10; A. 9 with the imbedded 

 rays; P. 8; eye slightly in advance of the middle of the head; interocular four times 

 in the length of the head; teeth conic. 



Nasal barbel as long as the labial barbel, extending to the base of the opercular 

 spines, maxillary barbel to their tips; pectorals shorter than the head, the first ray 

 not prolonged ; origin of ventrals equidistant from tip of snout and tip of caudal or 

 nearer the former, not reaching the vent; origin of anal under the posterior part 

 of the dorsal, the distance between its last ray and the base of the middle caudal 

 rays about five in the length; caudal subtruncate, five and one-half in the length; 

 origin of the dorsal over last half of the ventrals, equidistant between the tip of the 

 caudal and the nasal barbels or eye ; the distance between it and the caudal one and 

 six-tenths in its distance from the snout. 



Uniform light or dark, or mottled, sometimes with a dark lateral band with 

 one or more series of blotches above it. 



56. Pygidium immaculatum Eigenmann & Eigenmann. (Plate LII, fig. 1.)-" 

 Pygidium immaculatum Eigenmann & Eigenmann, Proc. Cal. Acad. Sci. (2), II, 



1889 CJuiz de Fora; Sao Matheos; Goyaz); Occasional Papers Cal. Acad. 



Sci., I, 1890, p. 337; Eigenmann, Report Princeton Univ. Exped. Patagonia, 



III, 1910, p. 400. 

 Trichomycterus immaculatus Ribeiro, Fauna Brasiliense, IV (A), 1912, p. 222. 



Habitat. — Rios Parahyba and Doce. Goyaz. 

 7076a-6, C. M., two, 81-93 mm. Rio Doce. May 24 and 25, 1908. Haseman. 



" The head is a little too sliort in the figure. 



