256 FAMILY CHRYSOMELIDAE 



colour as the other parts ; the punctation of the thorax is generally 

 rather close over the middle of the disk ; the elytral punctation is 

 also variable, usually closest over base. The colour varies, being 

 often a bright yellow. The general shape of insect is broad and 

 robust ; the thorax has rounded anterior angles, but sometimes 

 these are furnished with a tubercle. Length, 7 mm. to 10 mm. 

 (After Jacoby.) 



I found specimens of this well-known chrysomelid 



in the rubber nursery at theCharduar p IG> jg 



Life History. Rubber Plantation in the Darrang Crioceris impressa, 



Division in Assam. The beetles Fabr. India ; Ceylon, 

 were either flying about in the hot sunshine or settled 



upon the young seedling plants and eating off the epidermis of the leaves 

 of the rubber plants. 



The beetles were chiefly noticed on 10 April 1906, on which date they 

 were pairing. 



CAMPTOSOMES. 

 Ventral abdominal sutures curved. 



CRYPTOCEPHALUS. 

 Cryptocephalus pusaensis, Jacoby. 



REFERENCES. Jacoby, Faun. Br. Ind. Coleop. ii, Chrysomel. no. 374, p. 211 (1908); Lefroy, Ind. Ins. 



Life, 356 (1909)- 



Habitat. Pusa, Bengal. 



Tree Attacked. Tamarix gallic a. Pusa (Lefroy). 



Beetle. Testaceous ; thorax with four more or less distinct black spots or bands 

 surrounded by fulvous ; elytra also with four or more small black markings placed on the 



punctured striae. Head strongly and rather remotely punctured, 

 Description. antennae black, short, extending to base of elytra. Prothorax twice 



as broad as long, strongly narrowed in front, middle of disk with two 



obscure piceous or dark fulvous longitudinal bands, more or less marked with black, sides with 

 broader similarly coloured patch, marked with a black spot, rest of disk testaceous, extreme 

 basal margin black. Scutellum oblong, apex truncate. Elytra sub-cylindrical, strongly 

 punctate-striate, punctures deep and closely placed, partly transverse in shape, nearly black ; 

 shoulders with an irregular black elongate spot, another near the scutellum and two 

 immediately behind the middle ; these spots are often mere elongate short streaks. Length, 

 2.5 mm. (Description after Jacoby.) 



Larva. White, with the abdomen tapering and doubled back under the body so that the 

 apex reaches the thoracic legs. The grub lives in a small oval case. 



According to Lefroy, from whose specimens the species was described 

 by Jacoby, the larvae are commonly found on the Tamarix gallica near 

 Pusa and are easily reared. 



