Astathes and allied Genera of Longicorn Coleoptera. 53 



Hah. Java and Sumatra. Type ( $ ) in coll. Oberthur. 



This species is closely allied to A. lexis, Newra., and is 

 chiefly distinguishable from it by the less extent of the 

 violaceous area on the elytra, and the feebler development 

 and closer puncturation of the centro-notal tubercle. This 

 tubercle is of somewhat the same size and form in all the 

 remaining species of this section. 



In M. Oberthur's collection there is a specimen ticketed 

 " intermedia Thorns, type " which can only be regarded as 

 a variety of velata, Thorns. Though labelled ' type ' it has 

 not, to my knowledge, been described. It differs from the 

 type of velata m having the elytra violaceous from the base 

 quite up to the middle, and this violaceous area not so 

 widely interrupted at the suture. The locality of the 

 specimen is not indicated by any label, but a specimen in 

 the Brit. Mus. very closely agreeing with it, is ticketed 

 Java. 



26. Astathes rufescens. 



Astathes rufescens, Thorns., Syst. Ceramb., p. 559 (1865). 



Very closely allied to A. velata, Thorns., and probably only a 

 variety of that species, the chief differences noticeable relating to the 

 colour of the elytra. Elytra entirely yellowish-testaceous, giving 

 more or less strong purplish reflexions, especially towards the base, 

 in certain lights ; with a small area on each side between the middle 

 and the base rather closely beset with blackish setas, the setse over 

 the rest of the surface being more sparsely scattered, and tawny in 

 colour. (In some specimens the shoulder of each elytron has a 

 distinct purplish colour.) 



Hah. JAVA and Sumatra. Type ($) in coll. Oberthur. 



Having been unable to find any structural difference 

 between this form and A. velata, I was inclined to think 

 that the difference in coloration might be due to 

 immaturity of the specimens. But from an examination 

 of a large number of specimens, M. Oberthur has come 

 to the conclusion that this is not the case. He believes, 

 however, that A. nfescens is only a unicolorous form of 

 A. velata. 



27. Astathes nitens. (Plate IV, fig. 5.) 



Cerambyx nitens, Fab., Syst. Eleuth., ii, p. 279 (1801). 

 Lamia daldorjii, var. 3, Illig., in Wiedem. Archiv. fur Zool. 

 i, 2, p. 136 (1800). 



