1866.] MR. F. P. PASCOE ON THE COLEOPTERA OF PENANG. 505 



is allied to Leptura, but is distinguished by several important cha- 

 racters, such as the elongate-ovate, not truncate, terminal joints of 

 the palpi, the large facets of the eyes, the long basal joint of the 

 antennae and its insertion considerably anterior to the eye— thus 

 making a very important step towards the curculionid type, and a 

 very marked departure from its own. The anterior coxae are scarcely 

 conical or elongate, but are inserted into their largely angulated 

 cotyloid cavities something after the manner of the Prionidce. 



Asilaris. 



Caput ante oculos angustatum, production. 



Antennas basi approximates, apicem versus lateraliter dilatator, 

 scapo breviusculo. 



Palpi maxillares articulo ultimo elongato-ovato. 



Femora in medio incrassata. 



Head constricted directly behind the eyes, narrowed and produced 

 anteriorly. Eyes nearly entire, very prominent, the facets very 

 minute. Antennae shorter than the body, inserted between the 

 eyes, the scape rather short and slender ; third joint longest ; fifth 

 at the apex and succeeding joints gradually unilaterally dilated from 

 the base; the last notched and simulating an additional joint. 

 Maxillary palpi slender, lengthened, the last joint elongate-ovate ; 

 labial palpi short, truncate. Prothorax subobconical, its posterior 

 angles produced, the base bisinuate. Elytra gradually attenuated. 

 Legs unequal, the posterior longest ; femora thickened in the middle; 

 tarsi of the anterior and intermediate pair with the basal joint di- 

 lated in the male, of the anterior only in the female ; basal joint of 

 the posterior tarsi long and compressed in both sexes. Anterior coxae 

 stout, subcorneal or subcylindrical. Abdomen slender, imperfectly 

 covered by the elytra. 



Nearly allied to Ocalemia ; but in that genus the maxillary palpi 

 are truncate, the posterior femora elongate and linear, and the an- 

 tennae have the joints longer and only partially dilated towards their 

 apices. Both genera, owing to the structure of the prothorax, are 

 nearer Strangalia than Leptura. 



Asilaris zonatus. (PI. XLI. fig. 1.) 



A. ater ; elytris quadrifasciatis, fascia postica fiavescente, alteris 

 albis ; antennis articulis ultimis sex ochraceis. 



Deep black, very slightly pubescent, except the four coloured 

 bands on the elytra, and exceedingly closely and minutely punctured ; 

 muzzle rather glossy about the mouth ; palpi aud maxillary lobes 

 dull testaceous ; prothorax rather longer than broad, considerably 

 narrowed at the apex ; sctitellum exactly triangular, and having the 

 white basal band of the elytra continuous across its whole surface ; 

 elytra obliquely truncate at the apex, the outer angle very acute, 

 the basal and two median bands white, the praeapical yellowish ; 

 body beneath with a scanty silvery white pubescence ; antennae with 

 the last six joints ochraceous. Length 7 lines. 



Proc. Zool. Soc— 1866, No. XXXIII. 



