COLEOPTERA 595 



densely covered with tomentum. From A', viimiis it is separable by its smaller average 

 size and its more elongate form, the elytra being usually very decidedly longer. In 

 many examples the elytra are slightly, but distinctly, variegated ; the tomentum instead 

 of being uniformly cinereous is to a large extent blackish, so that pale lines are formed 

 thereby. The legs are never altogether bright or clear red like X. proteus. I have 

 seen not less than forty examples of X. siibmimiis. 

 Hab. Hawaii, Kilauea near the crater. 



(15) Xyletobius affinis .Sharp. 



Xyletobius ajfinis Sharp, Tr. Dublin Soc. iii. (.Ser. ii) p. 158. 



I cannot identify this species with certainty, but I suspect it may be the same as 

 either my X. minius or A', subviiinus, though it is equally likely to be distinct from 

 either. The nature of the anterior margin of the pronotum is of extreme importance in 

 differentiating various species of Xyletobius, that are very similar in appearance and 

 resemble X. affinis, so until this part is examined I should hesitate to assign any of my 

 species to Dr Sharp's. 



Hab. Hawaii, Mauna Loa, 6000 ft. (Blackburn). 



( 1 6) Xyletobius aleuritis, sp. nov. 



Piceo-niger aut fusco-niger, statura magna, vivus, ut opinor, totus pallida tomen- 

 tosus, antennis mediocriter elongatis, articulis quarto quintoque subaequalibus, sat 

 fortiter elongatis, caeteris usque ad decimum quinto vix conspicue longioribus. Long. 

 5 mm. 



I have only seen two examples, found dead, and much abraded, of this species, 

 which is evidently very different from any other. The pronotum is much less strongly 

 margined in front than in X. proteus and its allies, the striation is different from that of 

 X. martnoratus, as well as the shape of the pronotum, while the antennal characters 

 seem quite peculiar, in the small amount of dilatation of the fourth and fifth joints. In 

 life the insect is probably almost evenly covered with pale flavescent tomentum. 



Hab. Oahu ; two examples were dug out of dead Kukui wood (Aleurites) in 

 April 1892. I have never met with a specimen since, and doubt whether the insect is 

 a true Xyletobius. It was found at a lower elevation than any other. 



(17) Xyletobius oculatus Sharp. 



Xyletobius ocjilatus Sharp, Tr. Ent. Soc. London, 1881, p. 519. 

 I have examined a series of examples that agree very well with Sharp's description 

 of this species. It varies a good deal in size, some examples being nearly twice as 



