BLACKBURN AND SHAkP—On Hawaiian Coleoptera. 259 
Fam. SCOLYTIDA. 
Tribe ScoLyTINI. 
Genus CXXXVI.—Xyleborus. Mun. Cat. 1x. p. 2684. 
398. Xyleborus truncatus, Shp., ante, p. 192. 
Ins. Oahu. (?) Imm. 
In decaying wood. 
399. Xyleborus insularis, Shp., anée, p. 193. 
Ins. Oahu, Kauai. (?) Imm. 
Occurs in decaying wood on the Waianae mountains, Oahu, and also on Kauai. 
400. Xyleborus obliquus, Shp., anze, p. 192. 
Ins. Oahu, Hawaii, (?) Imm. 
This species has been taken from decaying wood on the mountains both of Oahu and Hawaii. 
401. Xyleborus rugatus, Blackb., ante, p. 192. 
Ins. Oahu. (?) Imm. 
Unique, 
402. Xyleborus immaturus, Blackb., ante, p. 193. 
Ins. Hawaii, Oahu. (?) Imm, 
This species has been taken from decaying wood on the mountains both of Oahu and Hawaii. 
403. Xyleborus frigidus, Blackb., ante, p. 193. 
Ins. Maui. (?) Imm, 
A single specimen was taken from decaying wood at an elevation of about 4000 feet, on Haleakala. 
Genus CXXXVII.—Aypothenemus. Mun. Cat. 1x. p. 2679. 
404. Hypothenemus eruditus, Westd. Trans. Ent. Soc. Lond. 1. p. 34, pl. 7. 
Ins, Oahu. (?) Int. 
In bark of acacia, on the plains near Honolulu. 
405. Hypothenemus maculicollis, Shp. Trans. Ent. Soc. Lond. 1879, p. 101. 
Ins. Oahu. (?) Int. 
Has occurred in bark of trees in several mountain localities near Honolulu, 
406, Hypothenemus griseus, Blackb., ante, p. 194. 
Ins. Oahu, (?) Imm. 
A single specimen occurred in the stem of a poppy, on the plains near Honolulu. 
