272 JOUBNAL, BOMBAY NATURAL niSTORY SOCIETY, Vol. XII. 



Arthrosphcera versicolor (White). (PI. B, figs, l-ld.) 



Syn. Zephronia versicolor, White, Ann. N. H. (3), III, p. 405, pi. vii, 

 fig. 3 (1859). Humbert, Mem. Soc. Geneve, XVIII, p. 41. pi. iii, 

 fig. 17 (1865) ; Butlor, Proo. Zool. Soc. Lond., 1873, p. 181. 



This species is so unmistakable on account of its colours that a very 

 few words will suflBce to describe it. 



Colour marbled, shining black and yellow. 



Bead and nuchal-plate resembling those of Z, notkeps. 



1st tergite smooth above ; rounded off in front ; lamina larger, and 

 rising somewhat sibruptly on a level with the eye as a forward expansion 

 of the anterior border. 



Teryites smooth behind, punctured in front. 



Anal tergite resembling that of Z. notkeps in presenting the small 

 ridore and marginal notch. 



$. Anal tergite not saddle-shapod. 



Forceps — 1st pair differing from those of Z. hrandti in that the 

 distal segment is distinctly divided into two by a joint which separates 

 a SHiall proximal from a larger distal segment ; the small proximal 

 jtortion furnished externally with a conspicuous prominence ; the larger 

 distal portion furnished below with a single backwardly directed tooth, 

 and internally at the apex with a second tooth. 2nd pair, with second 

 segment much shorter than in Z. hrandti ; its dactylar prolongation inter- 

 nally concave and denticulate, its external border evenly convex, its apex 

 slender and curved ; the distal segment less blade-like than in Z, hrandti, 

 inner surface hollowed and posteriorly denticulated, apex rounded. 



Vulva formed on same plan as that of Z. hrandti^ but less elongate, 

 the internal lamina being stouter. 



Length 26-40 mm. 



Locality. — Ceylon, Peradenia (Tkwaltes coll.). 



This species is most nearly related to i/. noticeps, but, apart from its 

 coloration, differs from it in the abrupt mode of origin of the lamina 

 of the Ist tergite. 



Arthrosphcera Brandti (Humbert). 



Sphceropaus Brandti, Humbert, Mem. Soc. Phys., Geneve, XVIII, 

 p. 38, pi. iii., fig. 15 (1865) ; Pocock, J'ourn. Bombay Nat. Hist. 

 Soc, VII., p. 143(1892). 



Zephronia chitonoides, Butler, Ann. Mag. Nat. Hist. (4). X, p. 354, 

 pi. xviii, fig. 2 (1872). 



