1921] F. H. Gravely : Indian Spiders. 441 



the third, which is about equal to the first, situated a little in front 

 of the middle of the joint, and followed by a diminishing series 

 of four other moderately large teeth. The first two ventral teeth 

 are situated at the base of the fang, the first of them being direct- 

 ed forwards at the side of it ; they are about equal in size to the 

 first dorsal, the second slightly larger than the first. The third is 

 very -mall, and situated about half way to the fourth which is 

 about opposite or slightly further back than the second dorsal. 

 The fourth is larger than the third and is somewhat closely followed 

 by the remaining eight, of which the first three or four are larger 

 than it is, though smaller than the dorsals opposite them; the 

 rest in descending series, 



Tetragnatha geniculata, Karsch. 

 Fig. 36. 



Localities. — Peradeniya, Ceylon; Coonoor, ca. 5700-6000 ft. 

 and Coonoor Ghat, ca. 5500 ft., Nilgiris ; Mahabaleshwar, ca, 4200 

 ft., Satara District, Bombay Presidency ; Sanjai River, Chakadhar- 

 pur, Chota Nagpur ; Pegu, Burma. 



This species, though widely distributed, does not appear to be 

 very common. It is now nearly thirty years since the female was 

 first described, but the male has still to be discovered.' 



The general build of the female is very slender and the cheli- 

 cerae are strongly divaricate. The dentition somewhat resembles 

 that of T. viridorufa (fig. 6a). None of the teeth are specially 

 long ; the first tooth of both rows is situated at the base of the fang, 

 and is much more widely separated from the second than are the 

 remaining teeth from each other, especially on the dorsal side, the 

 second dorsal being about opposite the fourth ventral. The nine 

 dorsal teeth are larger and more widely spaced than the more 

 numerous ventrals. Both rows extend nearly to the base of the 

 joint. The fang is strongly geniculate with a stout tooth, often 

 double, on the outer side of the basal bend, and another on the 

 inner side a little further on (fig. 36). 



Tetragnatha mandibulata, Walckenaer. 



Figs, id ■ 3rf, c. 

 Localities. — 



Typical forin. — Nuwara Eliya, Ceylon ; Ernakulam and Chala- 

 kudi, Cochin State ; Bangalore, Mysore ; Ootacamund, 6700-8000 



' I ha\e since obtained a male from Coonoor. It is hardly distinguishable 

 Ironi that of T. mandibulata except for its greyish instead of reddish yellow 

 general colotn" and its almost black sternum. These differences may, however, be 

 clue to the short time that the male of T. geniculata has yet been in spirit, or 

 may prove to be variable even if real. The only structural difference that I can 

 Hnd is that the teeth on the mandibles are slightly more numerous (one or two 

 more in each row) and therefore set somewhat closer together in T geniculata 

 than in T. mandibulata: but the material now before me does not admit of any 

 certainly that even this character is really constant. 



