I92I.] 



F. H. Gravely : Indian Spiders. 



449 



prolongation ; it is without the conspicuous anterior depression 

 found in 0. listen. 



The distal part of the chelicera of the female is shown in 

 fig. ja. The fang is very short, not more than half the length of 

 the basal joint. The fang is longer in the male, and very slightly 

 geniculate, otherwise similar. The ventral margin of the fang- 

 groove of the male is armed with four acutely pointed conical teeth 

 arranged at about equal distances from each other in descending 

 order of magnitude and followed by a large abruptly truncate or 

 slightly bifid tubercle. The dorsal margia bears one moderately large 

 conical tootb at the base of the fang, i.e. opposite the first tooth of 

 the ventral row, a very small one opposite the fourth and another 

 moderately large one opposite the anterior margin of the truncate 

 tubercle. The tip of the trochanter of the palp is unarmed beneath ; 



Text-fig. 7. 

 -Orsinome marmorea 2 . distal part of chelicera from below. 



-Oi'shiome listeri 





jhelicera from above 



the tibia is scarcely twice as long as the patella, shorter than the 

 tarsus, and scarcely a quarter as long as the femur — characters in 

 which it differs, according to Pocock. from 0. armata from Shil- 

 long. 



Orsinome listeri, sp. nov. 



Fig. 7c. 



Localities. — Pashok, rooo and 2500 ft., and Singla, 1500 ft., 

 both in the Darjiling District of the E. Himalayas. 



Total length of female about 10 mm. ; length of carapace about 

 3*5 mm. Total length of male about 6 mm. ; length of carapace 

 about 2 nun. Colour, arrangement of eyes, etc., much as in 0. 

 marmorea, which the male further resembles in the structure and 

 proportions of the palps and the female in the armature of the 



