252 Mr. C. J. Gahan on Longicorn Coleoptera 



Intergenal groove directly transverse. Pro- 

 notum with two obliquely longitudinal im- 

 pressions, limiting a central smooth space. 

 Sides of prothorax in the male rounded .... 8. ^, velutma, Thorns. 



Intergenal groove directly transverse. Pro- 

 notum with two obliquely longitudinal im- 

 pressions, the space between which is rugose 

 and almost completely divided by a median 

 longitudinal groove. Sides of the prothorax 

 in both sexes subangulate in the middle .... 9. JE, sinensis, sp. n. 



Pronotum with two obliquely longitudinal 

 impressions, inclosing a smooth space. Sides 

 of prothorax subangulate in the middle. 

 Elytra long compared with the anterior part 

 of the body. Pubescence paler and less dense 

 than usual 10. yE". sarta, Solskj'. 



1. jiEolesthes aurifaber. 



Sammaticherus aunfaher, White. 

 Neoceramhyx (eneas, Thorns. 

 Neocerambyx Lamhii, Paso. 

 Neoceramhyx alexis, Paso. 



In the types of ceneas^ Lamhii^ and alexis I could find no 

 structural differences by which any one of them might be 

 distinguished from aurifaber. M. Thomson evidently mistook 

 for aurifaber another and quite different species, and Mr. 

 Pascoe has described under this name a specimen in which 

 the ridges of the central space of the prothorax are less 

 distinct than in typical examples. The species is from 

 Borneo and Penang, and does not extend to the Duke of York 

 Island, as stated by Mr. Bates, who seems to have shared in 

 the general error concerning the species. 



2. uS^olesthes acliilles. 



Pachydissus achiUes, Thoms. 



Neoca-ambyx (sneas, Pasc. (nee Thorns.), Longic. Malay, p. 510, 



This is a larger species than aurifaber j the vertex of the 

 head is without a distinct median carina, the longitudinal 

 impressions of the pronotum are less distinct, and the femora 

 are not toothed at the apex ; but it is in other respects very 

 like that species. In the specimen described by Mr. Pascoe 

 under the name N. apneas the ridges on the central space of 

 the prothorax are indistinct. The species is from Borneo. 



