Longtcorn CoJeoptera from the Island of Hainan. 347 



XLVII. — On some Longicorn Coleoptera from the Island 

 of Hainan. By C. J. Gahan, M.A. 



This paper contains an account of tlie Longicorn beetles 

 collected in Hainan by the late Mr. J. Whitehead, Twenty- 

 four species are enumerated, of which six are described as 

 new. It will be seen from the distribution given for the various 

 species named that the Longicorn fauna of Hainan is, on the 

 whole, very like that of Siam, Burma, N. India, and South 

 China. 



1. ^gosoma hainanensis, sp. n. 



(S . JE. ornaticolH (White) affine ; nigro-fuscum, supra pube brevi 

 fulvo-flavescente fere omnino obtectum ; antennis articulo 5" 

 scabroso, quam 6" duplo longiore. 



Long. 38 mm. 



Hab. Hainan {Whitehead). 



Closely allied to ^. ornaticolle, White, and agreeing with 

 it in most of its characters, the chief difference being that in 

 the new form almost the whole upper surface is covered with 

 a short, dense, yellowish-tawny pubescence, somewhat similar 

 to that forming the four prothoracic spots of ornaticolle. The 

 fifth joint of the antenna in the male is twice as long as the 

 sixtli, and is scabrous throughout its entire length. As only 

 one example of this species was obtained, it may be doubted 

 whether the differences indicated will prove to be constant 

 when a larger series of specimens is examined. But out of a 

 number of specimens of ornaticolle and of the very closely 

 allied species yE". sinicum, White, I have not found one at all 

 approaching the present form in the amount of pubescence 

 covering its upper surface. 



2. jS^gosoma marginale, Fabr. 



A few examples of this species were obtained in Hainan. 

 The species is distributed from China to the Malay Archi- 

 pelago. 



3, Philus antennatus , Saund. 



This species has hitherto been recorded only from China, 

 though a very closely allied species — P. rufescenSj Pasc. — 

 has been described from Penang. 



It may be interesting to note here that both of these species 

 of Philus have a double stridulating area on the raesonotum, 



