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 . JE. velutina , Thoms. 
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. AL. 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. JE. sarta, Solsky. 
1. fEolesthes aurifaber. 
Hammaticlierus aurifaber , White. 
Neocerambyx ceneas , Thoms. 
Neocerambyx Larnbii, Pasc. 
'Neocerambyx alexis , Pasc. 
In the types of ceneas , Larnbii , 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. fEolesthes achilles . 
Pachydissus achilles , Thoms. 
Neocerambyx ceneas , Pasc. (nec Thoms.), Longic. Malay, p. 510. 
This is a larger species than aurifaber • 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 JV. ceneas the ridges on the central space of 
the prothorax are indistinct. The species is from Borneo. 
