49 



sented with at least eight species of Delphacidae, four or five 

 Oliarus, and a common lolania. Compared with the orders 

 already dealt with, however, the Rhynchota are very common- 

 place and poorly represented. 



HETEROPTERA. 



Lasiochilus denigratus is, so far as I remember, not abundant, 

 and is probably the only truly endemic Anthocorid on Tantalus. 

 Orthotylus of the Capsidae yields five or six species, and there are 

 probably more. The one described Kamehameha is scarce but 

 there is a second species or very distinct variety of this. Koanoa 

 is sometimes common. Nesidiorchestes is abundant, but tedious 

 to collect in numbers. Pseudoclerada moral is not common but 

 is nearly always obtainable. Oronomiris is abundant on grass 

 at all elevations. Acanthia oahuensis is found amongst wet 

 leaves and on bare ground while some species of Ploiariodes are 

 common and there is a Nesidiorchestes. Of Reduviolus, blackburni, 

 subrufus, rubritinctus and lusciosus, the latter as defined in the 

 Fauna Hawaiiensis, embracing at least three distinct species 

 from Tantalus. A Sephora, probably calvus, is terrestrial and 

 three or four Nysius are more or less common. Three species of 

 Metrarga occur together, M. nuda is commonest and is both 

 arboreal and terrestrial, contractu and villosa are generally, if not 

 always, terrestrial, amongst decaying vegetation. I once took 

 all three species on one day, on a certain ridge. Oechalia grisea 

 is periodically abundant, Coleotichus less common, but not rare, 

 and frequents ferns and Koa trees. 



DIPTERA. 



The Diptera have been studied least of all Hawaiian insects 

 and no doubt many new species can be taken on Tantalus, or in 

 any other mountain locality. The rather fine Sarcophagid flies 

 of the genus Prosthetochaeta and Dyscritomyia occur but only one 

 or two species of either. Somewhat resembling flesh-flies of the 

 genus Lucilia, they are by far the finest Hawaiian Diptera, but in 

 other countries would attract little attention. The small flight- 

 less Dolichopodid of the genus Emperoptera is locally common. 

 Of Pipunculus there are at least three species, parasitic on leaf- 

 hoppers. The species of Drosophila, of which several are known 

 breeding in banana stems, Pisonia and other trees, and the 



