FAMILY, I— SILURID^. 497 



in the adult. Colours — yellowish-brown, banded with blackish : fins yellow : dorsal, caudal and anal with black 

 bands. 



Thoracic adhesive apparatus rather elongated, reaching to the first third of the pectoral spine, its plaits 

 are scarcely branched. 



Hahitat. — Deccan, attaining at least 6 inches in length. I have taken this sjDecies at Poona, and also in 

 the head waters of the Jumna. 



2. Glyptosternum trilineatum, Plate CXVI, fig. 3. 



Glyptothorax trilineatus, Blyth, P. A. S. of Beng. 1860, p. 154. 

 Glyptosternum trilineatum, Giinther, Catal. v, p. 185. 



D. i/0, P. -,V, V. 6, A. 13 (^), C. 19. 



Length of head 6, of caudal 5|, height of body 6 in the total length. Eyes — small, behind or in the 

 middle of the length of the head. Head about as long as broad and covered with soft skin, snout obtuse. Lips 

 not fringed. Occipital process nearly three times as long as broad. Barbels — the maxillary reach to the end of 

 the head : nasal barbels nearly to the orbit : the external mandibular pair longer than the internal, and reaching 

 to the base of the pectoral fin. Thoracic adhesive apjiaratus rather large. Teeth — villiform in the jaws, none 

 on the palate. Fins — dorsal fin as high as the body, its spine weak, slightly serrated posteriorly, and its bony 

 portion rather above half the length of the head : adipose dorsal of moderate height, its base being equal to 

 more than that of the first dorsal, and to about half of the distance between the two fins. Pectoral spine 

 rather broad, denticulated internally, smooth externally, reaching two-thirds of the distance to the base of the 

 ventral. Caudal deeply forked. Skin smooth. Caudal peduncle — twice as long as high. Colours — chestnut- 

 brown, vrith a light streak along the back, another along the lateral-line, and a third near the abdominal 

 margin. 



G. gracile, Giinther, v, p. 186, fi-om Nepaul differs in having one more anal ray : occipital process a little 

 narrower : maxillai-y barbels longer, whilst the pectoral fin reaches the base of the ventral. 



The drawing was made from one in the Calcutta Museum taken in Rangoon in 1869. 



Hahitat. — Burma, Tenasserim and Nejiaul. It attains 12 inches or more in length. 



3. Glyptosternum conirostre, Plate CXVI. fig. 5. 

 Steindachner, Verh. z. b. Ges. Wien, 1867, p. 16, t. v and vi, figs. 2. 

 D. i I 0, P. 1/9, V. 6, A. 11-12 G^^), C. 17. 



Length of head SJ, of caudal 5^, height of body 5^ in the total length. Eyes — slightly behind the 

 middle of the length of the head, the width of the interorbital space equals 1/4 of the length of the head. 

 The width of the head equals 2/3 of its length. Upper jaw the longer : the width of the gape of the mouth 

 equals 1/2 of the length of the head. Lips not fringed. Occipital process three times as long as wide. 

 Barbels — the maxillary have broad bases and extend to the middle of the pectoral fin : the nasal, which have a 

 very wide fringe, reach the hind edge of the eye : the outer mandibular, which ^is^also broad, to the gill-opening : 

 whilst the inner are shorter. Teeth — generic. Fins — dorsal as high or rather higher than the body, its spine 

 strong, as long as the head behind the nostrils and smooth, serrated jjosteriorly in some specimens : length of the 

 base of the adipose dorsal exceeds that of the myed fin, and equals two-thirds of the extent of the interspace 

 between the two fins. Pectoral reaches nearly to the ventral, its spine strong, as long as that of the dorsal, 

 and having about 13 denticulations internally, it is not striated inferiorly. Ventral does not quite reach the anal. 

 Caudal forked. Adhesive apparatus in the chest rather broad, but posteriorly a large circular smooth space 

 causes it to be semicircular. Caudal peduncle about as high at its base as it is long. Colours — brownish, fins 

 yellow, stained with black. 



This fish has a considerable similarity to G. pectinopterutn, but possesses a wider mouth, a narrower head, 

 broader barbels, a higher caudal peduncle, and a more elongated adhesive apparatus. 



Habitat. — Himalayan streams, the one figured was from Simla. Specimens fi-om Kangra have the 

 pectoral spine serrated externally. 



4. Glyptosternum botia, Plate CXIII, fig. 4. 



Pimelodus hotius, Ham. Buch. Fish. Ganges, pp. 192, 378 ; Bleeker, Beng. en Hind. p. 59. 



B. vi, D. i/0, P. 1/8, V. 6, A. 11-12 ^.a^), C. 18. 



Length of head 5|, of caudal 4<l, height of body 6^ in the total length. Eyes — pupils transversely 

 oval, small, situated in the commencement of the front half of the head : the width of the interorbital space, 

 which is convex, equal to 1/3 of the length of the head. The greatest width of the head equals its length 

 excluding the snout. Upper jaw the longer : the width of the mouth equals 1/3 of the length of the head. 

 Barbels — eight, the maxillary reach to below the hind edge of the eyes, the nasal half way to the orbits, the 

 mandibular paii« are short. Teeth — villiform in the jaws. Fins^doTsal spine smooth, as long as the head 

 excluding the snout : length of the base of the adipose fin equalling one-thii-d of that of the interspace between 

 the two fins. Pectoral reaches two-thirds of the distance to the ventral, its spine is sti-ong, as long as the head 

 excluding the snout, and with about 20 strong teeth internally. Ventral reaches the anal. Caudal deeply 



3 s 



