284 MEMOIRS OF THE CARNEGIE MUSEUM. 



Some of the cotypes are more robust in body; in one the anal is blotched like the 

 caudal; in some the spots form regular series along the sides, leaving lighter stripes 

 between them. 



2. Hatcheria maculata (Cuvier & Valenciennes). (Plate XLII, figs. 3-5.) 



Trichomycterus maculatus Cuvier & Valenciennes, Hist. Nat. Poiss., XVIII, 



1846, p. 493 (San lago); Guichenot, in Gay, Hist. Chile, II, 1848, p. 311 



(Chile); GDnther, Cat Fishes Brit. Mus., V, 1864, p. 273; Philippi, Mb. 



Ak. Wiss. Berhn, 1866, j). 716 (Chile); Delfin, Catalogo, de los Peces de 



Chile, 1901, p. 30. 

 Thrichomycterus maculatus Girard, Proc. Acad. Nat. Sci. Phila., 1854, p. 199; 



U. S. Naval & Astron. Exped. 1855, p. 243 (Rio Mapocho). 

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



1889, p. 51 (Rio Mapocho) ; Occasional Papers Cal. Acad. Sci., I, 1890, p. 329; 



Proc. U. S. Nat. Mus., XIV, 1890, p. 36. 

 Hatcheria maculata Eigenmann, Reports Princeton Univ. Exped. Patagonia, III, 



1909, p. 249, pi. XXXIII, figs. 1, la and 16; 1910, p. 399. 



Habitat. — Pacific slope of Chile. 



Head 5.33; depth 7.5; D. 15; A. 9. Elongate, somewhat compressed; head as 

 long as wide; caudal peduncle long and slender. Eye small, midway between tip 

 of snout and end of opercle. Lips and lower surfaces of the head thickly covered 

 with warts. Gill-openings not continued forward to below the eye, the membranes 

 joined to the isthmus for a distance equal to one-third the width of the mouth. 

 Pectorals rounded, the first ray not produced; origin of dorsal in front of the vent, 

 but some distance behind the ventrals, equidistant from tip of snout and tip of 

 caudal, its last ray over the last ray of the anal. Caudal long, truncate. Anal 

 short and high, its height about equal to the length of the caudal, its distance from 

 the base of the caudal 3.75 in the length. Origin of the ventrals equidistant from 

 tip of snout and base of caudal, their tips reaching beyond the vent. Back and 

 sides marbled with light and dark brown; fins pale, immaculate. 



3. Hatcheria titcombi Eigenmann. (Plate XLIV, fig. 2.) 



Hatcheria titcombi Eigenmann, Proc. Am. Philos. Soc, LVI, Jan. 1918, p. 692. 

 Pygidium areolatim Evermann & Kendall {non Cuvier & Valenciennes), Proc. 



U. S. Nat. Mus., XXXI, 1906, p. 86. (Rio Comajo, tributary of Lake Traful, 



tributary to Rio Limay.) 



Habitat. — Eastern slope of the Andes in Argentina, Limay basin. 

 11110, I. U. M., one, 164 mm. Arroyo Comajo, J. W. Titcomb. 



