Cohoptera from the Island of Hainan. 353 



21. Serixia sedata^ Pasc. 

 Four examples. Occurs also in Siam and Burma. 



22. Serixia, sp. 



One example, apparently belonging to a new species, but 

 not in sufficiently good condition to be satisfactorily described. 



23. Astathes cyanoptera, sp. n. 



A. episcopali (Chevr.) affinis ; flavo-testacea ; elytris cyaueis, utris- 

 que obsolete biearinatis ; antennaram scapo subtus testaceo, 

 articulis 3''-5"'" fere omnino tcstaceis ; ceteris plus minusve infus- 

 catis ; pedibus testaceis, tibiis versus apioem tarsisque nigro-f uscis 



Loeg. 12-15, lat. 4i-6 mm. 



Uab. Hainan {Whitehead). 



Head (with the exception of the labrum), prothorax, and 

 underside of the body yellowish testaceous in colour. Head 

 rather strongly and thickly punctured in front and very 

 sparingly on the vertex, slightly concave between the an- 

 tennal tubercles, and marked with an impressed line along 

 the middle. Antennae with the first joint testaceous under- 

 neath and dark brown above; the joints from the third to the 

 fifth almost wholly testaceous, and the remaining joints more 

 or less deeply infuscate. Prothorax with a rather large but 

 not abruptly raised umbone on the middle of the disk, this 

 umbone, like the rest of the disk, being but very sparsely 

 punctured. Elytra of a bright metallic-blue colour, dis- 

 tinctly punctured, and each bearing two very slightly raised 

 lines or carinae along the inner half, the sutural margin also 

 being raised into a somewhat sharper and more distinct carina. 

 Distal half of the tibise and the tarsi blackish brown, the rest 

 of the legs having the same colour as the underside of the 

 body. 



This species is very closely allied to A. episcopalis, Chevr., 

 and I was at first inclined to regard it as a variety of the 

 latter. A. episcopalis differs, however, not only by the 

 violaceous colour of its elytra, but also by the more thickly 

 placed punctures on the umbone of the prothorax and on the 

 vertex of the head ; the third joint of its antennse is entirely 

 dark brown and the fourth to sixth joints are fuscous at the 

 apex ; the tibiae are almost entirely brown, though this colour 

 is somewhat hidden by the dense covering of fulvous setas. 

 A. episcopaliff, Clievr., is found in China, Hong Kong, and 

 Formosa. It is the true violaceipennis of Dejean's Catalogue, 

 Ann. d: Mag. N. Hist. Ser. 7. Vol v. 23 



