526 MR. F. P. PASCOE ON THE COLEOPTERA OF PENANG. [Nov. 22, 



genera as portions of one group (Callichrominoe) as M. Thomson, 

 without any knowledge of the species before us, has done. Again, 

 looking to the genera connected with Euryarthrum (such as Homalo- 

 melas and Prothema), and in a less degree with Here, Obrida, and Ty- 

 phocesis, we are led away to the Clytince without being able to draw 

 any satisfactory line between them. Such facts may serve to show 

 the risk of our failing to recognize any affinity between two genera 

 apparently widely different, but connected by intermediate forms (in 

 many instances remaining to be discovered), and prepare us for the 

 discrepancies which may occur in the views even of the same author. 



ASMEDIA MIMETES. (PI. XLI. fig. 11.) 



A. atra; elytris albo bifasciatis; antennis apicem versus ochraceis. 



Deep black ; head and prothorax finely and very closely punc- 

 tured ; scutellum triangular ; elytra very minutely punctured, two 

 narrow white hairy bands dividing them into nearly three equal parts, 

 the apex rounded ; body beneath dark steel-blue, with a short silvery 

 white pubescence ; antennae gradually passing into ochraceous yellow 

 from the fourth joint, the last five entirely ochraceous. Length 

 9 lines. 



Cerambycin^e. 



Cerambyx. 



Cerambyx, Linne, Syst. Nat. ed. 12. i. s. 2. p. 621 ; Serville, Ann. 

 Soc. Ent. de Fr. hi. p. 13. 



Cerambyx prtjinosus. 



C. purpureo-fuscus ; elytris confertissime punctatis, pilis subtilis- 

 simis dispersis, apicibus emarginatis, extus mucronatis ; anten- 

 nis pedibusque rufescentibus. 



Dark purplish brown, subnitid ; head finely punctured, grooved 

 between the antennae, the middle of the groove with a short strongly 

 marked carina, below this a transversely impressed circular line ; 

 prothorax about equal in length and breadth, with a small promi- 

 nent spine on each side, the disk with numerous short irregular 

 corrugations ; scutellum triangular ; elytra minutely punctured, the 

 punctures very close together between very delicate short transverse 

 ridges, each mostly having at its base a short silvery hair (giving an 

 appeai'ance to the naked eye suggestive of the bloom on the plum), 

 apices slightly emarginate, the outer angle with a short stout mucro ; 

 body beneath dark chestnut-brown, minutely pubescent ; legs yel- 

 lowish brown, the tibiae and tarsi paler, a dark ring at the extremity 

 of the femora ; antennae not longer than the body ( $ ?), pale red- 

 dish, darker at the base. Length 1 1 lines. 



The sole example in the collection appears to be a female, and is, 

 I think, more suggestive of C. denticornis* of Fabricius than of any 

 European species. 



* This and a few other species will, however, scarcely fit into any of the ge- 

 nera into which latterly even the restricted genus Cerambyx has heen divided. 



