638 FAUNA HAWAIIENSIS 



subtiliter) plus minus seriatim punctata. Metasternum late depressum, carina forti et 

 elongata antice instructum. Long. 275 mm. 



The single example described is no doubt a male. Both the first and second 

 club joints of the antennae have a more or less evident quadrangular shape. The 

 sculpture of the elytra is dense and they are well clothed with pubescence over the 

 middle third or more of their width, exterior to which the punctures become remote and 

 the surface nearly bare. 



A female example taken at the same time and place probably belongs to this male ; 

 the antennae are a good deal smaller and the first and second joints of the antennal club 

 are triangular (as it is quite likely they w'ould be in some specimens of the male) and the 

 whole club is more or less pale in colour. The latter is also a character of no importance 

 in Hawaiian Anobiidae. 



i have a male specimen procured in another locality and at a later time which 

 considerably resembles the male described. The antennal club is rather larger, the 

 puncturation ot the elytra is coarser in part, and the area of dense punctures does not 

 extend so far outwards from the suture. It is impossible to decide whether this is 

 another species or a variety of M. dnbiosiis. 



Hab. Oahu, Koolau range. • 



(60) Mirosterniis cariiiatus Sharp. 



Mirosterniis carinatus Sharp, Tr. Ent. Soc. London, 1881, p. 524. 



The male of the species, which I refer to M. cm-inatus Sharp, from the description, 

 is a black insect, but the female is brown in colour. I have examined many specimens 

 and have no doubt as to the se.xual dimorphism, since I have taken examples in cop. 

 There is a very considerable variation in the puncturation, at least in the females, some 

 having this much more sparse than others. The eyes in both sexes are not at all large 

 and very widely separated. The metasternum of the female is without a carina in front, 

 or at least has only a rudimentary one, much more feeble than that of the $. I refer to 

 the same species numerous specimens from Kauai, which are of much smaller average 

 size, sometimes even minute, but the largest examples of these equal or exceed the 

 smaller ones from Maui. Both on Kauai and Maui the puncturation of the elytra 

 shows the same variability and is very perplexing. I should think it very probable that 

 Blackburn's M. acntiis is a variety of the Kauai form of this species. 



Hah. Kauai, Maui. — Maui, Haleakala (4000 — 5000 ft.); Kauai (3000 — 4000ft.), 

 a common species. 



