116 Christmas Island. 



slightly convex, and not in the least costiform, with the exception, 

 however, of the interval between the two outermost rows of 

 punctures on the posterior half of the side of each elytron, thi* 

 interval being narrow and somewhat cariniform ; the antennae are 

 inserted a little behind the middle of rostrum, and nearer to the 

 eyes than in P. cylindriciis. In Pachyops cylindricus the space 

 between the anterior coxse is scarcely half the width of one of 

 the coxa3 ; and the club of the antennaj is compressed, and i* 

 broadly oval or almost rounded in outline. 



The differences between the two species are therefore pretty 

 considerable, and such as might perhaps be regarded as of generic 

 importance. But unless a new genus be formed for its reception, 

 the present species cannot be better placed than in the genus^ 

 Paohyops. 



69. Dryophthorus assimilis, Gahan, sp.n. 



D. lymexyloni similis sed minor, elytris brevioribus, utrinque ad 

 apieem minus fortiter carinatis. 



Long, (rostro excl.) 3, lat. 1 mm. 



Resembling the European B. hjmexxjlon, Fab,, in colour and 

 sculpture, but smaller in size, with the elytra relatively shorter, 

 being rather less than, instead of more than, twice as long as the 

 prothorax, and with the sub-apical carina, which is continuous 

 with the sixth interstice of each elytron, much less prominent. 



It also presents a somewhat close resemblance to D. modesttts, 

 Sharp, a species from the Sandwich Islands, but differs by its 

 proportionately narrower prothorax, and the narrower and more 

 acutely raised intervals between the roAvs of punctures on the 

 elytra. 



Family SCOLYTID^. 

 70. Platypus solidus, Walk. 



Flatypus solidus, "Walker: Ann. & Mag. Nat. Hist. (3), ii, p. 286 (1858). 



Specimens found in " rotting wood." They agree well with the 

 type from Ceylon. 



71. Xyleborus perforans, Well. 



Tomicus perforam, "Woll. : Cat. Col. Mad., p. 96 (1857). 



Bostrichus testaceus, "Walker: Ann. & Mag. Nat. Hist. (3), iii, p. 260 (1859). 



Xyleborus perforans, Blandf. : Kew Bull., 67, 68, 1892, p. 157; Report on the 



Destruction of Beer Casks in India by the attacks of a Boring 



Beetle, 1893. 



Found in " rotting wood." 



