56 



CHEYSOMELINJE. 



hardly punctate except for a few punctures in the middle area and 

 more on the lateral area, at the posterior angles, and along the 

 basal margin. Scutellum triangular with apex rounded, surface 

 smooth and impunctate ; it always shares the colour of the 

 prothorax. Elytra a little broader at the base than the prothorax, 

 widened posteriorly, convex; surface confusedly punctate, on each 

 elytron there are four pairs of longitudinal rows of punctures, 

 each pair of rows enclosing a smooth space. In the type-specimen, 

 which is of a lighter brown, this arrangement is not very prominent 

 although clearly visible. At the end of his description Baly 

 remarks " my specimen has the elytra stained with numerous 

 small rufo-piceous points irregularly arranged in longitudinal 

 striae; I think these are only due to immersion of the insect in 

 spirit." This observation is not correct, probably because Baly 

 saw the insect under a low-power lens ; these spots are true 

 impressed punctures, each of which is surrounded by a circular 

 dark area. Underside closely punctate, hairy; the last two 

 visible segments of the abdomen in the type-specimen brownish. 



Length, 11 mm. ; greatest breadth, 9 mm. 



Ceylon (type-locality). 



Type in the British Museum. 



Genus AGASTA, Hope. 



Agasta, Hope, Col. Man. iii, 1840, p. 177 ; Baly, Trans. Ent. Soc. 

 Lond. ( 3) iv, 2, 1867, p. 298; Chapuis, Gen. Col. v, 1874, pp. 367, 

 405. 



Genotype, Agasta formosa, Hope. 



Body oblong-ovate, moderately convex, the prothorax much 

 narrower than the base of the elytra. Antennae passing slightly 

 beyond the pronotum, slender. Elytra punctate-striate at the 

 base, a short scutellar row of punctures is also present, and the 

 rows of punctures along the suture are entire throughout, but on 

 the rest of the surface the punctures are confused. The bilobed 

 segment of the tarsi is not entire, that is to say, the lobes are 

 separate and not fused : in most CheysomelijS^e they are fused, the 

 anterior border being emarginate and the upper surface hollowed 

 for the reception of the claw-segment, which arises from the base 

 of the bilobed segment ; see footnote on p. 4. 



Range. This genus contains only one species, which Hope first 

 described from China, but subsequently it has been taken in Java, 

 Siam and India. 



35. Agasta formosa, Hope, 



Agasta formosa, Hope, Col. Man. iii, 1840, p. 177, pi. 2, fig. 3 ; Baly, 

 Trans. Ent. Soc. Lond. (3) iv, 2, 1867, p. 298 ; Chapuis, Gen. Col., 

 Atlas, pi. 123, fig. 4; Baly, Cist. Ent. ii, 1879, p. 436 ; Duvivier, 

 Ann. Soc. Ent. Belg. xxxv, 1891, C. r. p. 44. 



The ground-colour varies from pale yellow-brown to dark 



