SILITRID-S!. 117 



width to the promaxillary band. Fins the pectoral extends 

 nearly to below the origin of the dorsal ; spine of pectoral moderately 

 strong, more than two thirds the length of the fin, rugose or finely 

 serrated along its outer edge, serrated internally. Caudal free. 

 Colour brownish. 

 Hab. Ceylon and Java. 



123. (3.) Clarias dnssumieri. 



Clarias dussumieri, Cuv. Sf Vol. H. N. Poiss. xv, p. 382 ; Day, I'w/t. 

 India, p. 484 (see synon.). 



B. ix. D. 69-70. P. 1/8. V. 6. A. 50-59. C. 16. 



Length of head to end of gill-cover 6, of caudal fin 9, height of 

 body 8| in the total length. Eyes in the commencement of the 

 front third of the distance between the end of the occipital process 

 and the snout ; the width of the interorbital space equal to half 

 the length of the head. The greatest width of the head equals its 

 length ; its upper surface finely shagreened and covered with skin ; 

 on it are two depressions the anterior, which is oblong, extends to 

 opposite the front margin of the eyes ; the posterior, which is oval, 

 is midway between the posterior end of the anterior depression 

 and that of the occipital process, which last is scarcely produced 

 and 3| times as wide at its base as it is long. Barbels the nasal 

 reach the hind edge of the eye, the maxillary the base of the 

 pectoral fin, those on the lower jaw are shorter. Teeth those 

 on the palate with globular heads and in an uninterrupted curved 

 band, which is rather wider than that on the premaxillaries. Fins 

 pectoral spine rather strong ; its length equals half the distance 

 between the base of the occipital process and the end of the snout ; 

 it is rather strongly serrated externally with a few recurved spines 

 near its extremity, more feebly internally, whilst the length of the 

 fin only equals half the distance between its base and that of the 

 ventral, it does not quite reach to below the origin of the dorsal. 

 Caudal distinct from the other vertical fins. 



Hab. Malabar and Pondicherry to the Malay Archipelago. 



124. (4.) Clarias assamensis. 

 Clarias assamensis, Day, Fish. India, p. 485. 



Mah-yur, Assamese. 

 B. ix. D. 64-68. P. 1/8-11. V. 6. A. 46-50. C. 14. 



Length of head to end of opercle 5| to 6, of caudal fin 8, height 

 of body 6| to 7 in the total length. Eyes in the commencement 

 of the anterior third of the total length of the head, width of the 

 interorbital space equal to two fifths of the total length of the head. 

 The greatest width of the head equals its length between the 

 snout and the hind edge of the opercle ; the width of the gape of 

 the mouth equals one third of the total length of the head. Upper 



