COLEOPTERA 141 



(4) Dryophthorus nesiotes, sp. nov. 



Niger, robustus, statura magna. Rostri pars praeantennalis ? nitida, baud, vel vix 

 evidenter, punctata. Pronotum latissimum, antice fortissime constrictum, fortiter dense 

 punctatum. Elytra seriatim fortiter punctata, interstitiis cinereo-sericeis, tuberculis 

 minutis, sat distinctis, munitis. Long, (rostr. incl.) 6 — 775 mm. (Plate VII. fig. 16.) 



This species also belongs to the group in which the elevated apical margin is 

 continuous with the sixth interstice of the elytra. The interstices themselves (except in 

 very much rubbed examples), have a distinct ashy covering. The formation of the 

 spaces between the punctures in each row on the elytra is nearly similar to that in 

 D. peles. The present species is distinct by its large size, the distinct minute asperities 

 with which the interstices are set, and their ashy covering. 



Hab. Kauai mountains (4000 ft.). 



(5) Dryophtho7'ns g^^avidiis Sharp. 



Dryophthor7ts gravidus Sharp, Tr. Ent. Soc. London, 1878, p. 22. 



To this species I refer a great number of e.xamples taken on Molokai, Lanai, Maui, 

 and Hawaii. The difierences between the extremes are so great that they do not 

 appear, when examined together, to be even very closely allied species, but after 

 examining the whole series from the various localities, I am forced to consider all 

 to belong to one variable form. Minute individuals appear to be always distinguishable 

 from D. squalidus etc. by the shorter and wider elytra, differences in puncturation etc. 

 Some examples from Maui are very remarkable, the punctures on the elytra becoming 

 distorted and tending to become obsolete, the elytra themselves being laterally com- 

 pressed. A similar tendency is also seen in some specimens from other islands. The 

 elytra are much more narrowed posteriorly in some examples than in others. The 

 puncturation of the prothorax varies in the size and density of the punctures ; those on 

 the elytra also are variable. There is a decided tendency towards the sculpture of the 

 elytra exhibited by D. crassus Shp. in some Maui individuals. 



Hab. Oahu (Blackburn) ; all the islands to windward of Oahu. 



(6) Dryophthorus crassus Sharp. 



Dryophthorus crassus Sharp, Tr. Ent. Soc. London, 1878, p. 23. 



Hab. Oahu and Maui (Blackburn). I have taken it singly near Honolulu, but 

 not elsewhere, unless some of the examples from Maui, included under D. gravidus, 

 should be referred to this species. 



19 — 2 



