204 Mr. Walter F. H. Blandford's 



The tliree following species of Dryoccetes show certain 

 divergences from the common type of the genus in the 

 shape of the prothorax, which is less elongate than usual, 

 being in two of the species nearly semielliptical, and 

 tends to become gibbous near the base. This form of 

 prothorax, which approaches that of Xyleborus, is not 

 associated with other marked differences ; the mentum 

 is rather more oblong than usual, and the first joint of 

 the labial palpi is very large and tumid, as in Xyleho7'us, 

 the second and third being quite minute ; the maxillary 

 armature, as is customary in Dryocmtes, is spinous and 

 not setose. This latter point appears decisive as to 

 placing the species in the present genus rather than in 

 Xyleborus, with which they appear to form an osculant 

 group. It would be premature to establish a fresh 

 genus for them without undertaking a revisional 

 examination of the mental structure in other species 

 of .Dryoca'tes. 



Dryoccetes rugatus, sp. n. 



Oblongus, niger, parum uitidus, fusco-pilosus, antennis ped- 

 ibusque ferrugineis ; pi'othovace vix teque longo quam lato, later- 

 ibus et apice conjuuctim semielliptice rotundatis, dorso subfequaliter 

 rugoso-asperato ; elytris striato-punctatis, interstitiis rugosis, et 

 punctis piliferis confertis uni-vel biseriatim munitis, apice fortiter 

 oblique declivi, retuso, rugoso-punctato. Long. 5 ram. 



Oblong, black, little shining, with fine fuscous-yellow pubescence, 

 the legs and antennse deep ferruginous. Head shortly subrostrate, 

 the front slightly convex, subnitid, closely and rugosely punctured, 

 feebly impressed between the eyes, finely carinate over the mouth, 

 pubescence not dense, rather long, the mouth fringed ; eyes narrow 

 oblong, flat, anteriorly sinuate ; antennal club normal. Prothorax 

 scarcely as long as broad, widest before the base, the sides and 

 apex conjointly rounded and a little exceeding a half -ellipse, the 

 hind-angles obtuse, the base subtruncate ; surface convex from side 

 to side, declivous but not strongly convex from the basal limb to 

 the apex, pilose with uniformly scattered hairs, short over the 

 disc, longer at the sides and apex, and covered with close small im- 

 bricate asperities, rather weaker behind, the median line smoother 

 and subelevated from the base to the middle, but very indistinct. 

 Scutellum rounded triangular, shining. Elytra truncate at the 

 base, a little wider than the prothorax and not quite double as long, 



