1 92 1.] F. H. Gravely : Fauna of Barkuda T. 411 



Argyrodes argentata, Cambridge. 



Argyroiies argentata, Cambridge, lySo, pp. ,■^25-6. pi. wviii. fig. 5. 



This species also occurs on the island. 



? Theridion spp. 



One or more species of Theridion, varying considerably in 

 colouration, spin irregular snares of the usual type among Prickly 

 Pear and other bushes, living in these webs under a dead leaf or 

 some such shelter. 



Another species, closely resembling the European Lithy- 

 phantes faykuUianns in colour, and possibly belonging to the same 

 genus, lives on the ground. 



Family Argiopidae. 

 Tetragnatha gracilis, Stoliczka. 



Tetragiii)tlia gracilis, Pocock. igon, pp. 214. 

 This species, which is known to occur from India and Ceylon 

 to Celebes and Amboina, usually spins its webs with a twig, on 

 which it rests, across the centre. 



Tetragnatha mandibulata, Walckenaer. 



Common on sedges at the edge of the tank, and on small 

 bushes on the shore of th; lake, where it rests by day, coming out 

 to spin its webs at dusk. Recorded from numerous localities 

 < xtending from Mauritius and the Seychelles to the Sandwich 

 Islands. 



Tetragnatha viridorufa, sp. nov. 



This is a jungle spider, rather than a frequenter of water. 

 It spins its web among bushes, and spends the day on a leaf 

 besides it, where its bright reddish brown back and legs and green 

 flanks help to render it inconspicuous in spite of its large size. 



The ocular quadrangle is practically square— if anything 

 slightly longer than wide and wider in front than behind. The 

 lateral eyes are much nearer to each other than are the medians. 

 The chelicerae are much longer than the cephalothorax and are 

 strongly divaricate. In the female the first tooth on the ventral 

 margin of the fang groove is situated close to the base of the 

 fang and is much stouter than the corresponding tooth on the 

 dorsal margin, which is situated a little further back. The first 

 five dorsal teeth and the first seven ventral extend over about 

 two-thirds of the length of the basal segment, the remaining teeth 

 being crowded into the remaining one-third. The fang is unarmed 

 and almost straight. 



In the male there is the usual strong sub-apical dorsal tooth, 

 which is simply curved and pointed. The fang groove teeth are 

 less numerous than in the female, and the first two of the dorsal 



