Lovgicornia Maktyana. 291 



some of the species of Monochamus into account — M.musivus for 

 example — I scarcely see how Dihammus can be differentiated 

 from it. 



Dihammus longicornis. 

 Moiiochamus longicornis, J. Thomson, Arch. Ent. i. 444. 

 D. fuscus, pube obscure grisea sparse tectus ; elytris basi albo- 



bimaculatis. 

 Hah. — Aru, Saylee. 



Dark brown, with a thin dull-greyish pubescence, a white 

 oblique dash on each side of the scutellum ; face, tibiae and first three 

 joints of the antennae spotted with brown ; head finely punctured ; 

 prothorax with the punctures more crowded ; elytra with nu- 

 merous fine punctures at the base, disappearing beyond the 

 middle ; body beneath and thighs slightly spotted with brown. 

 Length 22 lines ; of the antennae {$) Q inches. 

 The profemora of the male are remarkable on account of their 

 deeply-grooved inner surface. 



Dihammus rarus. 

 Monochamus rams, J. Thomson, Arch, Ent. i. 445. 

 D. fuscus, pube albida vel ochracea tectus ; prothorace vittis 



elytrisque plagis fuscis ornatis. 

 Hah. — Aru. 



Brown, pubescence short, dense, whitish or yellowish blotched 

 with brown ; head and prothorax dark brown, with four whitish or 

 yellowish stripes, the two outer united between the eyes, disk of 

 the prothorax with a few small pitted tubercles ; scutellum trans- 

 verse ; elytra with a large blotch at the base, another at 

 the shoulder, another in the middle, and a smaller blotch near 

 the apex ; body beneath with a fulvous pubescence ; legs and an- 

 tennae brown. 



Length 16—18 lines. 



BlEPEPHjEUS. 



Caput mediocre, antice sub-quadratum ; tuberibus antenniferis 

 validis, divergentibus. Oculi mediocres. AntenncB corpora 

 longiores; scapo valido, apice angulato ; articulo tertio recto, 

 longiore ; caeteris gradatim brevioribus. Prothorax parvus, 

 quadratus, utrinque fortiter dentatus, baud sulcatus, basi 

 truncatus. Elytra sub-depressa, apicem versus sensim 

 u 2 



