clxviii FAUNA HAWAIIENSIS 



chrysophylla, and are injurious. A. falsif alee Hum feeds on the beans in the pods of 

 leo"uminous plants and also bores in the stems, sometimes destroying the plant. 



The endemicity of any of the species of Cryptophkbia is doubtful. CiyptopJilebia 

 illepida, of which long series have frequently been bred, is much more variable in the 

 males than in the females. It is extremely common, the caterpillars feeding in the 

 pods of the imported Acacia farnesiana but also on the very different (Sapindaceous) 

 Nephelmni litchi. It also attacks Cassia and other imported pod-bearing trees, in 

 which it resembles the allied C. carpophaga, which is known to feed on Cassia and 

 Nephelium. In the mountains C. illepida is injurious to the native acacias, and the 

 other two doubtfully-distinct species, C. tetrao and C viilpes, will no doubt also be found 

 on the same. There are five species of Enarmonia described. The status of these 

 species is uncertain, as the variability is excessive, being somewhat similar to that of 

 Adeloneura falsif alcelliini. Examples with very little resemblance to one another are 

 bred from the same brood of caterpillars. These feed in the pods of Sophora and of 

 Acacia koa in the mountains, and are numerous enough to be injurious in some localities. 

 Bactra straminea is a very widely distributed species in the islands and extremely 

 variable, examples differing greatly in size and pattern. Probably several species are 

 really included under this name, for we have observed scores of specimens in some 

 localities, without remarking any special variability. If there is only one species, then 

 the variation is to a large extent local or racial. Melanochroic forms occur and these 

 are sometimes of gigantic size. In some varieties there is constant and conspicuous 

 sexual dimorphism. 



Of the subfamily Tortricinae, Pararrkaptica is represented by a single species, 

 which greatly resembles some of the species of Archips, and, though peculiar to the 

 islands, is probably an offshoot from the other. The species of Archips, nine in number, 

 are, excepting A. postvittanus, endemic, as also are the very similar species included in 

 Panaphelix (monotypic and endemic), Dipterina with one species and Tortriv with five. 

 So far as is known all these greatly resemble each other in habits, and the borings of the 

 rather large caterpillars in young shoots of Myrsine or other trees are often conspicuous 

 and numerous. The moths are not very commonly met with, but some species are 

 attracted to light. In the daytime we have usually disturbed them from amongst dead 

 leaves lying beneath the forest trees, or found some of the prettily coloured green-marked 

 species at rest amongst moss on tree-trunks in wet forests. The abundance of larvae 

 compared with the rarity of the moths is quite remarkable. I think that I have obtained 

 a species of the small Ophionine of the genus Atrometus from one of these Tortrices. 

 The imported A. postvittanus is an injurious insect and has been found, in company with 

 Amorbia emigratella, doing much damage to young fruits on orange trees, but both these 

 species are polyphagous. When inspecting importations, we have found A . postvittatms 

 on plants introduced from Australia, on hot-house trees from California, and on others 

 from Mexico. It first appeared on Kauai in 1896, having probably been brought from 



