10 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



of citron growing wild near the jungle, but which was imported 

 and planted by a settler some years ago. I have compared the 

 species with others of the genus in a paper on Australian Mymaridse 

 now in manuscript and it should suffice to say that it is a good 

 species, but a typical one of the genus, there being no peculiarities 

 which may be connected in any way with its habitat. 



The occurrence of this species in the Sandwich Islands would 

 appear rather remarkable to me did I not have reason to think 

 that it was introduced there with the other Australian parasites 

 of sugar-cane insects, as described in Bulletin No. 1 of the Hawaiian 

 Sugar Planters' Association. No direct statement is made to that 

 effect, but it seems very probable. If it was not intentionally 

 introduced, then its presence can be explained by the fact that it 

 is associated with commercial plants such as sugar cane and citrus 

 fruits and was distributed by commerce. These explanations are 

 the most likely and reasonable ones, for otherwise we would have 

 to accept others which in this case would be not incredible, 

 but less reasonable in the face of the first two. The species most 

 probably is native to the east coast of Australia. 



2. Alaptus globosicornis Girault. 



This species was described from Florida in North America. It 

 was recorded to have been reared from a coccid on citrus fruits 

 in 1907. About three years later Girault recorded it from Hono- 

 lulu, in the Sandwich Islands, where it had been captured in an 

 office as early as 1900. It was thus found earlier in the Pacific 

 than in North America. Late in 1911 and early in 1912 I cap- 

 tured a number of specimens of it in North Queensland, where it 

 appears to be the commonest species of the genus, but forms 

 what appears to be a distant color variety; the Hawaiian speci- 

 men also appears to be a similarly distinct variety. In Queens- 

 land the species was found only in settled areas where citrus fruits 

 are not uncommon; in the Sandwich Islands the office where the 

 species was captured was very probably an insectary or an ento- 

 mological or quarantine office where imported insects and trees 

 would likely be placed for a time. Thus, again, I think the 

 explanation of the wide distribution of this species is that of 

 commercial dispersal, the parasite being carried along with its 

 host. This seems the most likely. The fact that the species is 

 split into geographical varieties would tend to show that it has 

 been distributed over its present-known range for some time, but 

 a variation of this kind, namely, of general body coloration, does 

 not necessarily have to have a long period of time for its consum- 

 mation, but, I believe it is known, may ensue after the exposure 

 of a comparatively small number of generations to the new climate. 

 The species is a characteristic one, because of the submoniliform 



