270 JOURNAL, BOMnAY NATURAL JIISTORY SOCIETY, Vol. XI 1. 



male the movable digit of the hhider pair of oopulatory feet is composed 

 of a single segment Arthrosphccra. 



h. — Apex of the legs narrowed and pointed, the spine and the claw 

 nearly contiguous ( PI. A, fig. 11a ); vulva in the female composed of 

 onlj two pieces, a basal which bears the aperture, and a distal, 

 the so-called cap, which -is smooth and polished ; in the male the 

 posterior pair of oopulatory organs have the movaljle digit distinctly 

 bi-segmented Zephronia. 



These two genera also appear to be distinct in their geographical 

 distribution, Arthrosphcera being known so far only from C-eylou ai\d 

 the more southern parts of India, whereas Zephnmla occurs only in 

 Burma and the north-eastern parts of India, ejj.^ Assam. 



It may be added that the vulva mentioned in the above diagnosis is 



the generative plate of the female, which is found attached to the basal 



segments of the second pair of legs, and that in the male there are two 



pairs of copulatory feet, both being pincer-like, situated beneath the 



last or anal segment. The males further differ from the females in 



having the apical segment of the antenna? enlarged. 



Genus ARTHROsrn^RA, Pocock. 



Ann. Mag. Nat. Hist. (G), XVI., p. 410 (1895). 



Artlirosphcera pib'fera (Butler). (PI. B, fig. 7.) 



Syn. Zephronia pilifera, Butler, Ann. N. H. (4), X., p. 357 (1872); 

 id., Proc. Zool. Soc. Lond., 1873, p. 180, pl.xix, fig. 7. 



Colow dark ochraceous, dull ; head and nuchal-plate polished and 

 black. 



Tergites thickly and closely punctured throughout and clothed with 

 short hairs. 



Head and -} inched- pi ate coarsely and more sparsely punctured than the 

 teroitos ; nuchal-plate with the sinuate inferior border not marked with 

 a sulcus or fine ridge. 



2nd tergite with abruptly sloped, smooth, shining anterior portion, 

 and bearing aliove this portion an almost obsolete sulcus ; lamina small, 

 originating gradually, and with thicikened rounded margin. 



Anal tergite ( 9 ) rounded, with small single inner ridge on each 

 side, and a scarcely perceptible marginal notch. 



The three basal segments of the legs with their inferior edges armed 

 with a series of sharp spines. 



