114 Christmm Island. 



This species has a somewhat close resemblance to R. ohscurus, 

 Boisd., but is relatively longer and narrower ; the elytra are more 

 oblong and more densely tomentose, and the punctures along the 

 striae are very much larger and more distinct. 



Family COSSOMD^. 



66. Cossonus variipennis, Gahan, sp.n. 



Niger, nitidus, elytris medio plus minusve testaceis, lateribus 

 sutura et apice nigris ; prothorace antice constricto et transversim 

 sulcato, lateribus punctatis a basi versus apiceni curvatim paullo 

 convergentibus, disco Isevi, utrinque medio seriebus duobus irregu- 

 laribus punctorum impresso ; elytris punctato-striatis, interstitiis 

 paullo convexis. 



Long. 4-4-25, lat. 1-1-25 mm. 



Black and glossy, with the elytra testaceous to a greater or less 

 extent along the middle of each, the sides, suture, and apex being 

 black. Head impressed in the middle between the eyes with a 

 small round pit, from which a shallow groove extends forwards 

 along the rostrum as far as to a point in a line with the insertion 

 of the antennae. Prothorax constricted, and marked with a deep 

 transverse groove a little behind the apex ; its sides punctured, and 

 converging slightly from the base up to the anterior constriction ; 

 the disk smooth, with two irregular rows of well-marked punctures 

 along each side of the middle from the base to the anterior groove ; 

 the space on each side between these rows of punctures and the 

 side of the prothorax is sparsely and very minutely punctate, the 

 narrow space along the middle between the rows of punctures being 

 wholly impunctate. Elytra punctate-striate, five equidistant rows 

 of punctures being visible from above on each elytron, while four 

 closely approximated rows, in addition to a short marginal row 

 along the anterior third, are present on each side ; the interspaces 

 between the rows of the punctures on the disk are slightly convex. 

 The colour of the elytra is variable ; in some specimens the middle 

 of the disk of each elytron from the base up to the posterior fourth 

 or fifth is testaceous; in others there is but a narrow testaceous 

 strip extending a short distance from the base ; while in one 

 example the elytra are wholly black. 



This species resembles C. stituralis, Boh., but is flatter on the 

 disk of the prothorax and elytra, and much less strongly punctured 

 on the sides of the prothorax and on the middle of the breast and 

 abdomen. 



67. Phlceophagosoma dubium, Gahan, sp.n. 



Sub-fusiforme, nigro-piceum aut fuscum ; rostro longiusculo, 

 sub-parallelo, antice vix latiore, minute punctulato : oculis 

 prominentibus ; antennis ante medium rostri insertis ; prothorace 



