500 PHTSOSTOMI. 



by longitudiiml plaits of shin. Anal short (11 to 13 rays) not continuous with the oaMdal which is forhed. Ventrals 

 situated ^posterior to the dorsal, and consistvng of six rays. Air-vessel in two lateral portions, enclosed m hone. 

 Geographical distribution.— Skvev Ooic near Aleppo, Upper Assam, and the Jumna. 



SYNOPSIS OF INDIVIDUAL SPECIES. 



1. Euglyptosternum lineatim,_k. 13. Brown, with a narrow light line along the middle of the side. 

 Suddya in Upper Assam ; also the river Jumna. 



1. Euglyptosternum lineatum, Plate CXVI, fig. 7. 



D. i/0, P. 1/10, V. 6, A. 12-13 G.'to), C. 17. 



Length of head 4^ of caudal 6f to 6, height of body 6 to 7 in the total len^h %es— small, situated 

 about 2 diameters behind or else in the middle of the length of the head, the width of the mterorbital space 1/4 

 of the length of the head. Head rather flattened, its greatest width equals its length behind the nostrils. 

 Upper jaw the longer, the width of the gape of the mouth equals half the length of the head. lips smooth. 

 Occipital process three times as long as wide at its base. Barbels— the nasal nearly reach to the orbit : the 

 maxiUary pair are as long as the head, the outer mandibular ones reach the gill-opening, the inner are shorter. 

 TeeiA— villiform in the jaws, and in one large patch extending across the palate, and so closely approximating to 

 the premaxUIary teeth that they appear like a single large band. Adhesive apparatus on the thorax distinct. 

 Mm— the dorsal as high as the body, its spiae strong, entire, and about half the length of the head : adipose 

 dorsal of moderate height, the length of its base equalling that of the rayed fin, or half the interspace between 

 the'two fins. Pectoral spine very strong, smooth externally, denticulated internally with about 9 or 10 teeth, 

 and reaching two-thirds of the distance to the base of the ventral. Caudal deeply forked. Skin smooth. 

 Caudal peduncle— twice as long as high. OoZowrs— brown, with a narrow Hght band along the side. 



Habitat.— The specimen figured (life-size) was from the Jumna, I have procured it 12-5 inches in length 

 near Suddya in Upper Assam. 



Genus, 29 — Psetjdbchbneis, Blyth. 



Gill-openings small, not extending on to the lower swrface of the head, the gill-membrames being attached to a 

 very broad isthwms. Body somewhat elongate .- head rather depressed. An adhesive appa/ratus formed of transverse 

 folds of shin situated on the thorax between the bases of the pectoral fms. Eyes small, subcutaneous, on the tipper 

 surface of the head. Mouth transverse, small, inferior. Nostrils on either side approximating, being divided by a 

 barbel. Ba/rbels eight, the maxillary pair with broad bases. Teeth villiform in the jaws, palate edentulous. Dorsal 

 fin with one spine and six rays : the adipose of moderate extent. Pectoral with its inner third vertical, its lower two- 

 thirds horizontal, its spine feebly serrated. Ventral horizontal, homing six rays, and situated below the dorsal. 

 Caudal emarginate. Avr-vessel in rounded lateral portions enclosed in hone. 



This Genus is evidently formed for an existence in rapids. 



SYNOPSIS OF INDIVIDUAL SPECIES. 



1. Pseudeeheneis sulcatus, A. 11-13. Black, blotched with yellow, fins with black bands. Darjeeling and 



Khasya hills. 



1. Pseudeeheneis sulcatus, Plate CXVI, fig. 1. 



Glyptosternum sulcatus, McClelland, Cal. Journ. Nat. Hist, ii, p. 587, pi. vi ; Bleeker, Beng. p. 58. 

 Pseudeeheneis sulcatus, Blyth, Proc. Asi. Soc. of Beng. 1860, p. 134 ; Giinther, Catal. v, p. 264. 



D. i/0, P. 1/13, V. 6, A. 11-13 (f:t), C. 17. 



Length of head 7|, of caudal 6, height of body 6 in the total length. Hyes — small, situated midway 

 between the hind edge of the opercle and the nostrils : the width of the interorbital space equals 3i in the 

 length of the head. Lower surface of the head with numerous papillae, especially near the symphysis. The 

 width of the head equals its length. Barbels — the maxillary pair with very broad bases, and about 1/3 of the 

 length of the head. Mns — spine of anterior dorsal broad, weak, and with a soft termination, it is crenulated 

 posteriorly : length of the base of the adipose dorsal as long as that of the interspace between the two fins. 

 Pectoral large and extending to above the base or first third of the ventral, its spine is broad, finely ciliated 

 externally in its lower 1/2, crenulated internally, especially in its posterior soft termiaation. In some specimens 

 the under surface of the pectoral spine and first ventral ray are striated. Caudal emarginate, lower lobe the 

 longer. The thoracic sucker has about 14 transverse folds. The free portion of the taU about three times as 

 long as deep at its base. Colours — ^blackish, with some large, irregular, yellowish blotches. Fins yellow, with 

 black bands. 



Habitat. — DarjeeHng and Khasya hills, attaining 7 to 8 inches in length. The specimen figured was 

 from Darjeeling. 



