COLEOPTERA 281 



I have examined the vestigial wings of 18 individuals, and find them to be un- 

 usually variable. They are never in the extremely reduced condition that is attained 

 in many of the Anchomenides, but are always longer than the metanotum ; the smallest 

 vestige is about '4 mm. long, the largest is about i '2 mm. long ; the majority of speci- 

 mens are intermediate but there are three which do not depart very much from the 

 smallest dimension, and there is one that nearly equals the most extreme specimen in 

 the other direction. The individual with the vestige the largest is a specimen of a blue 

 variety, taken at Waimea mountains, Kauai, 4000 ft., May 1894; the specimen that 

 comes nearest to it is the only one of the species that has been found on Maui, Halea- 

 kala, 5000 ft.. May 1894. Another specimen of the Kauai blue variety, the same 

 locality and date as the other, has the vestiges only "6 mm. long, or considerably less 

 than the average. All the specimens are from Kauai except the one individual men- 

 tioned above as found on Haleakala. It is possible that this may prove to belong to 

 another species, as it is in colour, sculpture and form nearer to Beiiibidiu»i iiiolokaiense 

 than are any of the Kauai specimens. The vestiges appear also to be variable in shape, 

 though it is difficult to estimate this as they are often crumpled. The vestige figured 

 (Plate VII. fig. 24) is narrower than that of any other example. In examining this 

 series I found two specimens with the wings fully developed, and I have therefore 

 separated them from this genus and placed them in Bevibidiiuii. I shall not however 

 be surprised if this winged form prove to be a discontinuous variation of N. laetiadiun. 

 If so, we have in A"^. lacticiiluni a species variable as regards the development of the 

 wings in Kauai, and represented in Molokai by an extremely similar form, having the 

 wings always well developed. The material is not however sufficient for final 

 conclusions. 



Hab. Kauai, Maui. Mountains, Waimea, 4000 ft.. May 1894; Koholuamano, 

 4000 ft., April 1895. — Maui, Haleakala, 5000 ft., June 10, 1894; one specimen 

 (Perkins). 



(2) Nesoddium lahaincnsc, sp. nov. 



Nigrum, supra subviridi-micans, antennis pedibusque fusco-rufis, illarum basi 

 femoribusque dilutioribus ; elytris quadri-impressis, fortiter punctato-striatis, parte 

 apicali laevigata, perpolita. Long. 2| mm. 



Very near A^. laetindimt, but dark in colour, the striae or grooves of the elytra 

 deeper, and the posterior pair of impressions larger. The elytra are a little narrower 

 across the shoulders, so as to make some approach to A'^. smaragdinum. 



I have examined the wings of the only two .specimens that have been obtained of 

 this species and find that they are reduced to small vestiges. 



Hab. Maui. Lahaina (Koebele). 



x6 — 2 



