424 Records of the Indian Musemn. [Vol. XXII, 



Genus Tetragnatha, Latreille. 



In spite of the strong superficial le-c-mblance that almost all 

 species of this genus bear to one another, especially after the loss 

 of their colour through soaking in spiiit they may readily be dis- 

 tinguished by the structure of the cheliccrae, and in some cases 

 by the arrangement of the eyes. 



In view of the considerable number of species already described 

 by Thorell and others from the Oriental Region and neighbouring 

 islands, and of the wide distribution of some of them, the very 

 high proportion (seven out of ten) of new species in the collection 

 before me is unexpected. All three of the known species repre- 

 sented have a very wide range, and so apparentl}' have three of the 

 new ones, this extending from South India or Ceylon to the Eastern 

 Himalayas in one case, the Southern Shan States in another, and 

 Siam in the third. Of the remaining four new species two come 

 from Assam and Burma respectivelj', localities where Thorell's 

 species would certainly ha\e been expected; and the other two 

 from vSouthern India. 



In view of the ease with which the species can be distinguished 

 and the fullness of Thorell's descriptions I can only conclude that 

 the number of species still awaiting discovery is very large; in 

 which connection it should be remembered that most are unattrac- 

 tive looking spiders of somewhat crepuscular habits and therefore 

 likely to be neglected by any one not specially looking out for them. 



Before proceeding to deal with the material before me I pro- 

 pose to summarise as briefly as possible what is known of the 

 species already recorded from or not uulikel}^ to occur in the 

 Oriental Region. For this purpose the species have been arranged 

 in alphabetical order. 



Tetragnatha anguilla, Thorell. 



Tetragnatlin angiiilln, Thorell, iM//. pp. 44.1-445. 



From Kandari in Celebes. Lateral eyes almost twice as widely 

 separated as are anterior from posterior medians. 



Female. Chelicerae half as long as carapace with an inward- 

 ly directed broad, flattened and moderately strong tooth situated 

 on the inner side much above the fang-groove a little before the 

 middle ; first of dorsal eight and ventral seven teeth apical, second 

 dorsal widely separated from first. Fang about half as long as 

 basal joint, unarmed. 



Male unknown. 



Tetragnatha biscriata, Thorell. 



Tetragnatha biseriata, Thorell, iSSi, pp. 1.^9-141. 



From Amboina. Lateral eyes somewhat nearer together than 

 medians. 



Female. Chelicerae ab.out two-thirds as long as carapace, with 

 two small obtuse subapical tubercles. First tooth of both series 



