SEBASMIA. 



143 



II. Etjes emarginate; third antennal joint shorter than fifth. 

 145. Dialeges undulatus, Gahan, A. M. N. H. (6) vii, p. 23 (1891). 



Pitchy brown, varying on the elytra to reddish brown in the 

 colour of the derm'; a covering of greyish pubescence, which 

 is denser and more glossy on the elytra, there also with broad 

 patches or bands of varying shades, like 

 watered silk, according to the incidence 

 of the light. Head slightly elongated 

 behind the eyes ; the latter deeply emar- 

 ginate in front, not divided as they are 

 in the type species. Antennae of the 

 male twice as long as the body, fringed 

 with hairs under the third and succeeding 

 joints ; third joint shorter than the fifth ; 

 fifth to seventh subequal ; eighth to tenth 

 gradually diminishing in length, and 

 united scarcely longer than the eleventh; 

 antennae of the female a little longer than 

 the body, with the eleventh joint very 

 little longer than the tenth. Prothorax 

 longer than broad in both sexes, slightly 

 rounded on each side, constricted at the 

 base and apex ; transversely and not very strongly wrinkled 

 above, with a line or band bare of pubescence along the middle. 

 Elytra conjointly rounded and unarmed at the apex. 



This species, though it has a strong resemblance in shape and 

 coloration to D. pauper, Pasc., the type of the genus, is easily 

 distinguished from it by the following well-marked structural 

 characters : the head less elongated behind the eyes ; the eyes 

 not divided ; the third joint of the antennas shorter than the fifth ; 

 the elvtra rounded and unarmed at the apex. 

 Length 16-21 ; breadth 3^-5 mm. 

 Hob. Ceylon ; Burma ; JSiam. 



Fig. 56. Dialeges 

 undulatus, Gahan. X 



Genus SEBASMIA. 



Sebasmia, Pascoe, Tram. Ent. Soc. (2) v, p. 18 (1859) ; Lacord. Gen. 

 Co-opt, viii, p. 272 (1869). 



Type, S. templetoni, Pasc. 



Rnnge. Ceylon and Southern India. 



Eyes large, emarginate, closely approximate above and not very 

 widely separated on the ventral side of the head ; genae short. 

 Antennae about one-fourth longer than the body in the <$ ; third 

 and fourth joints slightly thickened at the apex, third about one- 

 fourth longer than the fourth and shorter than the fifth ; fifth to 

 tenth compressed and sharply angulate in front at the apex. 

 Prothorax longer than broad, narrowed anteriorly from the middle, 



