OCR Text |
Show 1895.] FROM MATTO GROSSO AND PARAGUAY. 529 length of suout, equal to interorbital width; maxillary toothless, extending to below anterior border of eye. Dorsal 11, originating behind vertical of ventrals, longest rays as long as head. Anal 40-42, deepest anteriorly, longest rays a little shorter than head. Caudal bifurcate. Scales 30-33 g^; lateral line complete. Pale brownish, upper surface of head, dorsal, anal, and lower part of caudal region of body blackish; two blackish vertical bands on upper half of body, the first behind the head, the second below the origin of the dorsal fin. Total length 45 millim. Several specimens from Descalvados, Matto Grosso. 13. TETRAGONOPTERUS ULREYI, sp. n. Depth of body 2\ to 2f in total length, length of head 31 to 3 | times. Diameter of eye half length of head, twice length of snout, equal to interorbital width ; maxillary toothless, extending to below anterior third of eye. Dorsal 10, originating behind base of ventrals, longest rays as long as head. Anal 23-25, anterior rays elongate, a little shorter than the head. Caudal bifurcate. Scales 32-33 - ; lateral line reduced to 8 or 9 scales. Yellowish, 4 with a small black humeral spot, a black line along the middle of the side, and a black line along the base of the anal fin; dorsal blackish at the end. Total length 35 millim. Several specimens from Descalvados, Matto Grosso. The species is named after Prof. A. B. Ulrey, the author of a very useful key to the determination of the species of this genus. 14. ANACYRTUS PROGNATHUS, sp. n. Depth of body 24 in total length, length of head 4 times. Snout strongly projecting beyond the mouth, squarely truncate, with two strong tooth-like spines pointing outwards and forwards ; several smaller teeth on each side of the upper jaw and two on each side of the lower; diameter of eye \ length of head, \\ in length of snout, \\ in interorbital width; maxillary extending to below anterior third of eye ; upper profile of head very concave. Dorsal 11, equally distant from eye and base of caudal, longest rays a little snorter than head. Anal 52. Caudal deeply forked. Yellowish, with a silvery lateral stripe ; end of snout aud a small spot at base of caudal blackish. Total length 125 millim. A single specimen. This paper will be published entire in the Society's ' Transactions,' with illustrations of the new species. PROC. ZOOL. Soc-1895, N o . X X X I V . 34 |