THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[SIXTH SERIES.] 

 No. GO. DECEMBER 1892. 



LI. — On a neio Spider from Calcutta. Bj tlio Rev. 

 O. P. Cambridge, M.A., F.R.S., &c. 



[Plate XXII.] 



Fam. Theridiidae. 



Genus Ariamnes, Thor. 



Ariamnes simulans^ sp. n. 



Adult female. — Length 8^ lines ; length of cephalothorax 

 1 line, of abdomen 7^ lines. 



Cephalothorax. — Length nearly three times the width ; 

 ohlong, truncated behind, constricted laterally at the fore 

 extremity of the caput, and sides nearly parallel ; of a flat- 

 tened form ; profile-line nearly level ; a slight impression 

 behind tlie eyes and an indentation at the thoracic junction. 

 Its colour is yellowish, with some converging lateral markings 

 forming on each side a broad yellow-brown band. 



Eyes at the fore extremity of the caput ; four form a large 

 central square, the two anterior eyes being the largest of the 

 eight and seated on tubercles; the lateral pairs are nearer to 

 the hind-centrals than to the fore-centrals, the hind-hiteral 

 and hind-central eyes on each side being nearly contiguous to 

 each other. 



The clypeus is a little prominent at its lawer margin, and 

 its height is nearly about half that of the facial space. 



Ann. d- May. N. Ih'st. 8er. G. Vol. x. 29 



