PHYTOPHAGA FROM THE BATU ISLANDS 409 



antennae amongst the Phytophaga. The four specimens obtained 

 seem all to belong to the male sex as all have the elytral basal 

 fovea also found in the same sex in other species of the genus. 



Ba^tnsia., n. gen. 



Oblong-ovate, antennae filiform, thorax strongly transverse, 

 transversely sulcate , elytral epipleurae continued below the 

 middle, legs slender, all the tibiae mucronate, the metatarsus 

 of the posterior legs very long, claws appendiculate, the anterior 

 coxal cavities closed. 



I am obliged to propose this genus for an insect agreeing in 

 all essential characters with Ochralea and Candezea but differing 

 from either and also from Monolepta in the strongly transverse 

 and SLilcate thorax. The coloration of the species before me is 

 that of so many others belonging to different genera and inha- 

 biting the Malayan islands viz : — brown and black. There are 

 species of Luperodes^ Nadrana, Monolepta.:, Ochralea and Candezea 

 which all show the same system of coloration, but in the insect 

 from Batu, the shape of the thorax in connection with the closed 

 cavities is so different that it is impossible to place it in any 

 of the above named genera. 



28. Batusia raapi, n. sp. — Reddish-fulvous, the posterior 

 portion of the elytra and the abdomen black, thorax extremely 

 minutely, elytra slightly more strongly and very closely punc- 

 tured. 



Length 5 mill. 



Convex and dilated posteriorly, the head rather broader than 

 long, not perceptibly punctured, the frontal tubercles broad and 

 flat, as well as the clypeus, the latter not separated from the 

 foce, palpi strongly dilated, the antennae long and slender, pale 

 fulvous, the basal joint elongate, curved, the second short, the 

 third nearly twice as long, the following joints very elongate; 

 thorax more than twice as broad as long, the sides very slightly 

 rounded at the middle, the anterior angles oblique, the surface 

 transversely sulcate, scarcely perceptibly punctured, scutellum 



