1890.] J. H. T. Walsli — A new Trap-door Spider from Orissa. 2G9 



limits of the city of Madras : — Guretis pliaulrus, Fabricius ; Hehomoia 

 glaucippe^ Linn ; Nepheronia fraterna, Moore (form ceylonica) ; Gomalia 

 albofasciata, Moore; Udaspes folus, Cramer, and Iljsperia galba, Fa- 

 bricius. 



XYII. — A new Trap-door Spider from Orissa. — By Surgeon J. H. Tull 



Walsh, I. M. S. 



[Received Oct. 27tli -.—Read 5th November, 1890.] 



MYGALIDJB. 



Adelonychia, n. g. 

 AdelonycMa nigrostriata, 9 , n. sp. — At present the following de- 

 scription will be that of the genns also. The spider, which I think is 

 not full grown, measures 10 mm. The falces are reddish-brown in coloar 

 with long fangs which act vertically. Pedipalpi of medium length, 

 the terminal joint furnished with a black pad of strong hairs. Eyes : 

 anterior and central pairs large and of a blackish-brown colour, the hind 

 centrals and hind-externals small and pearly white. Cephalothorax 

 reddish-brown above, whitish yellow below ; fovea transverse with eight 

 dark, shallow grooves radiating from it. The cephalothorax is markedly 

 convex in front between the two anterior dark markings and slightly 

 convex over the remaining part. Abdomen oval, truncated in front and 

 more convex on the upper than on the under surface. The ground 

 colour above is greenish-grey with a central black stripe and seven 

 well marked black lateral sfcriee directed downwards and slightly back- 

 wards from the central line. The entire upper surface of the abdomen 

 is covered with fine light-coloured hairs. Under surface of abdomen 

 dull grey, the four lung sacs visible as small whitish spots ; two pairs of 

 whitish spinnerets. Legs: relative length 4, 1, 2, 3, pale reddish yellow 

 above, almost white below. Tarsi without hooks (?) but terminating 

 in brush-like black pads. Falces, pedipalpi and legs thickly covered 

 with strong blackisH-brown bristle-like hairs. 



On the 19th January of this year I was out looking for ants in the 

 forest near Khurda and while digging round the roots of a Banyan tree 

 I turned up a tube with a lid which I at once recognised as the home 

 of a trap-door spider of the " cork nest " class. I had unfortunately 

 cut obliquely through the tube, but the lid and hinge were intact. 

 Having found one tube I began to dig carefully round the tree, and was 

 successful in finding an almost perfect specimen with the spider inside. 

 The trowel cut through the extreme lower end of the tube and dis- 

 closed the spider who made no attempt to escape downwards bat cluncr 

 tenaciously to the under surface of the lid. In order to enclose the 

 spider and complete the tube, I went down to a neighbouring tank and 



