Cohoptera from the Island of Hainan. 349 



Dark brown, with a faint greyish pubescence covering the 

 greater part of the pronotum and elytra, and a yellowish tawny 

 pubescence, broken up into small spots, spread over the head, 

 underside, legs, and the posterior two fifths or so of the elytra, 

 a few spots of the same colour being very sparsely scattered 

 over the anterior three fifths of the elytra, while four obsolete 

 bands — two dorsal and two lateral — made up of the same 

 tawny pubescence are present on the prothorax. Antennas 

 greyish tawny, except at the apex of tiie third and following 

 joints, those of the female nearly twice as long as the body, 

 with the first six or seven joints rather densely ciliate under- 

 neath ; the scape rugosely punctured and less tlian half the 

 length of the third joint, the latter being slightly thickened 

 and somewhat rugose towards the base. Prothorax nearly 

 cylindrical, the sides being but feebly rounded and the 

 tubercles so small as to be almost quite obsolete ; the disk 

 somewhat rugose. Scutellum entirely fulvous pubescent. 

 Elytra granulate at the base and rather thickly and strongly 

 punctured from thence up to the thickly spotted posterior 

 area. Prosternal process scarcely dilated near the middle of 

 its length ; the mesosternal process with a feeble cariniform 

 tubercle along the middle. 



'J'his species, being founded upon a female specimen, is 

 only provisionally placed in the genus Pelargoderus. In 

 general structure it approaches closely enough to P. vittatus, 

 iServ., the type of the genus, the chief points of difference 

 being that in the latter the antennaj are not ciliate under- 

 neath, the scape is relatively longer, and the prosternal 

 process is distinctly enough dilated at about the middle of 

 its length. 



12. Melanauster riiacrospihts, sp. n. 



Niger, nitidus ; antennis albo-annulatis ; elytris basi haiid granu- 

 latis, utrisque maculia 11 aut 12 albis, ornatis ; pectore abdo- 

 mineque utrinqiie luteo-albo-plagiatis ; processu mesosterni valde 

 tuberculato. 



Long. 28-38, lat. 11-14 mm. 



Hah. Hainan {Whitehead). 



Black and glossy. Prothorax with an acute conical tubercle 

 on each side, below which there is a rather large luteous 

 white spot; the disk with a somewhat raised or tuberculate 

 area across the middle, the raised part consisting of two 

 oblique tubercles towards each side and a postero-median 

 longitudinally impressed tubercle which lies just in front of 

 the deeper and more anterior of the two basal transverse 



