| OCR Text |
Show 276 MR. G. A. BOULENGER ON FISHES COLLECTED [Mar. 1, posterior anal rays do not extend to the vertical from the end of adipose fin if laid backwards. The free portion of the tail is as deep as long. Caudal fin deeply forked, the upper lobe much produced, much longer than the lower, measuring more than one fourth of the total length. Upper parts brownish, lower whitish. Total length 175 millim. Four specimens from Canelos. 5. PIMELODUS (PSEUDOPIMELODUS) PULCHER, sp. n. (Plate XXI. fig. 1.) D. 1/6. A. 9. P. 1/5-6. Head naked above ; occipital process short, about as long as and in contact with the basal bone of the dorsal spine. The length of the adipose fin equals about three fourths of its distance from the dorsal, or the depth of the tail below its origin. The maxillary barbels extend to the base of the pectoral spine ; the outer mandibulars a little shorter than the maxillaries. The length of the head is about two sevenths of the total (without caudal); the depth of the body below the dorsal one fifth or one ninth of the total length (without caudal). Head slightly longer than broad. The band of teeth in the upper jaw is of moderate breadth, without prolonged lateral portion. Eyes very small, directed upwards, and covered with skin. Dorsal fin a little higher than long, with strong serrated spine. Pectoral spine very stout, depressed, very strongly serrated along its inner, less so along its outer edge. Caudal forked. Pale brownish on the head and body, with a dark brown band encircling the body and covering the dorsal fin, save its upper border, which is white; head dotted with brown ; tail and caudal dark brown, with a large round light spot on each side of the free portion of the tail (sometimes confluent) ; two large whitish spots, one above the other, on the caudal, the extremity of which is whitish ; adipose fin dark brown, whitish in front and behind; pectoral and ventral with one, anal with two dark brown cross bands. Total length 87 millim. Three specimens from Canelos. 6. CETOPSIS PLUMBEUS, Stdr. Cetopsis plumbeus, Steind. Denkschr. Ak. Wien, xlvi. 1883, p. 31, pl. vi. fig. 3. Sarayacu. 7. STYGOGENES HUMBOLDTI, Gthr. (Plate XXI. fig. 2.) One specimen, 56 millim. long, from Pallatanga. Specimens from Canelos are mentioned by Steindachner. They are of great interest as settling the point of the exact habitat of the species, those upon which it was established being without locality. Whether S. humboldti is identical with Humboldt's Pimelodus cyclopum must remain an open question. The opinion of Putnam (Amer. Nat. 1871, p. 694) loses all value from the fact that he also proposes to unite Aryes brachycephalus, Gthr.! On comparison of young specimens of the |
