246 FAUNA HAWAIIENSIS 



Obs. On Kauai a variable insect is found, which I refer to the above species. 

 These Kauai examples are generally darker than those from Oahu, and have the elytra 

 often entirely blackish, or only obscurely red. On Molokai or Lanai the species is 

 again found, and the individuals again are subject to much variation. On Hawaii the 

 individuals attain a considerably larger size than the type, and on this island form two 

 distinct races, one found on the windward and southern parts of the island, the other in 

 the Kona district on the west. These Kona examples are readily distinguished from 

 the others by the more elongate and conspicuous erect setae of the elytra, and they are 

 of smaller average size. For these two races I propose the names P. deceptor van 

 major and van konafuis. 



(122) Proterhinus blackburni Sharp. 



Proterhinus blackhirni Sharp, Tn Ent. Soc. London, 1878, p. 17. 



P. hystrix Sharp, op. cit. 1881, p. 527, =var. of this species. 



(Plate X. fig. 5, ^, van disignatus.) 



This species varies greatly in size, colour, form of thorax, length of elytra, &c., and 

 I do not think the P. hystrix Sh. is a distinct species. On Kauai there are two well- 

 marked varieties, the van eiigeniae, van n., of somewhat robust form, the thorax with 

 strongly prominent lateral angles in front, the erect setae of the elytra dense, and with a 

 good deal of pale appressed clothing, which tends to form four spots, the antennae 

 longish and slender ; and the van bisignatus, van n., which a good deal resembles the 

 preceding form, but is darker, and has the basal tubercles of the elytra conspicuously 

 marked with white or silvery appressed setae. The sculpture and clothing of this 

 species is often entirely concealed by a mud-like covering, and it is not improbable that 

 I have included several distinct species under one name, for it is one of the most 

 difficult species to study, and many of the examples taken are in indifferent condition, 

 but supposing there are several allied species, they are certainly all variable. 



Hab. Found on all the islands of the group, in the forests from 1500 — 4000 ft. ; 

 the var. hystrix on Hawaii, van bisignatus peculiar to Kauai, and var. engeniae on the 

 same island, but with very similar examples on Molokai. 



COLEOPTERA HETEROMERA. 



All the Heteromera, with the exception of the Cistelidae, are probably foreign. 

 Those that are not known at present to occur outside the islands will probably be 

 discovered elsewhere as the study of Coleoptera progresses. 



