1887.] PHYTOPHAGOUS COLEOPTERA OF CEYLON. 109 



Thorax with two deep depressions, impunctate ; elytra very finely 

 and closely punctured, sparingly pubescent. 



Length 2| lines. 



Head impunctate, with a deep triangular fovea between the eyes. 

 Antennae as long as the body, the third to the ninth joints furnished 

 with slender and long appendages, the tenth triangularly widened and 

 compressed, emarginate at its outer side, the eleventh and twelfth 

 joints simple. Thorax twice as broad as long, the sides constricted 

 near the base, the surface with a transverse groove at each side nearly 

 extending to the middle, entirely impunctate. Scutellum triangular. 

 Elytra parallel with a small depression immediately below the scu- 

 tellum, extremely finely punctured, the interstices furnished here and 

 there with single stiff hairs ; the first joint of the posterior tarsi as 

 long as the three following joints together. 



Dikoya, 



Xenarthra unicolor, sp. nov, (Plate XI. fig. 11.) 



Elongate, subdepressed ; testaceous ; the extreme apices of the 

 tibi8e fuscous ; thorax square-shaped, impunctate ; elytra scarcely 

 visibly punctured, sparingly covered with long hairs. 



Length 4 lines. 



Head impunctate ; palpi robust. Antennae slightly shorter than 

 the body, fuscous, the long appendages and the penultimate joint 

 lighter, the latter thickened and elongate, as long as the following or 

 terminal joint. Thorax scarcely broader than long, the sides nearly 

 straight, slightly rounded before the middle ; the surface with two 

 very shallow depressions, occupying the middle of the disk, clothed 

 with a few long hairs, entirely impunctate. Elytra with some very 

 fine punctures arranged somewhat longitudinally, clothed with long 

 single hairs ; the intermediate tibiae slightly curved ; the first joint 

 of the posterior tarsi as long as the three following joints together. 



Colombo. 



Of this species, which may be known by the larger size and the 

 different structure of the terminal joints of the antennae, only a single 

 specimen is before me. 



LUPERODES aUADRIPUSTULATUS, Motsch. 



Galle. 



This species varies in the colour of the elytral pattern from fulvous 

 to black. Motschulsky's description agrees very well with the 

 specimens before me, but the legs in all of them are fulvous, the 

 extremities of the tibiae and the tarsi being fuscous only. Besides 

 the six yellow spots of the elytra in plainly marked specimens, the 

 apices of the same parts are also frequently yellow, in others the 

 elytral margin is black or piceous, and the posterior yellow spot 

 extends upwards at the sides, and unites with the one placed at the 

 shoulder, thus reducing the yellow marks to a spot near the scutellum 

 and a band at the sides, which increases greatly in width near the 

 apex of each elytron. The antennae have the third joint about one 

 half longer than the second, which is very short. If I have 



