COLEOPTERA 55, 



(2) Holocoryujis subdeprcssjis, sp. nov. 



Depressus, capite thoraceque piceis, parce punctatis, antennis palpis pedibusque 

 testaceis, elytris testaceo-obscuris subtiliter punctatis, abdomine nigricante apice ferru- 

 gineo ; antennis articulis 5 — 10 fortiter transversis. Long. 5 mm. 



This is much smaller than H. disccdeus, and is readily distinguished by the much 

 shorter antennae ; it is less depressed and the punctuation of the surface is finer. 



Hab. Kauai, Makaweli, 2500 ft., 11. 1897. Three specimens (Perkins). 



Lf.ptacixus, Er. 

 Leptaciniis Erichson, Kaf. Mark Brand, i. 1837, p. 429. 



(i) Lcptaciiuts Jlavipcintis, Kr. 

 1 his has not been met with recently and is no doubt an introduced form. 

 Hab. Oahu, Honolulu (Blackburn). 



Tribe ALEOCHARINI. 



MVLLAENA, Er. 



Myllacua Erichson, Kaf. Mark Brand, i. 1837, p. 382. 



About 12 species of this genus have been obtained in Hawaii, and doubtless 

 others exist there. Although they are small anci obscure insects they really form a 

 remarkable element in the Hawaiian fauna. The Munich Catalogue of Coleoptera 

 enumerates only 18 species for all the world, and this number has not since been greatly 

 added to. The species are a most difficult study, for forms found in widely separated 

 parts of the world are extremely similar and the discrimination of the species is usually 

 a matter of much difficulty. I regret that I am obliged to leave the Hawaiian Myllaenas 

 in an unsatisfactory state, the material at my disposal being inadequate as regards both 

 number of specimens and their mode of preservation. The species may possibly be 

 ultimately satisfactorily precised by means of the male genitalia, which are of a 

 remarkable character. But I am not able to make use of this structure at present. 



(i) Alyllacna discedens. Sharp. 

 Alyllaena discedens Sharp, Tr. ent. Soc. London, 1880, p. 49. 

 This very remarkable Alyllacna has not been met with recently; and is no doubt 

 both local and rare. I believe that it is an apterous form and entitled to generic rank. 

 Hai;. Oahu, in tallen logs on the hills a few miles from Honolulu (Blackburn). 



(2) Myllacna. sp. ? 



A single individual from Haleakala, has very short elytra and approximates a good 

 deal to M. discedens. It is very close to M. 7'u/esceiis but has more slender antennae 

 and will probably prove to be a different species. 



Hab. Maui; Haleakala, 5000 ft., x. 1896 (Perkins). 



F. H. III. 71 



