43 



been more assiduously collected, and of the latter class probably 

 not many additions are to be expected. 



Of the Fossores Nesomimesa antennata, preying on daddy- 

 long-legs of the subfam. Limnobiinae, is very common, and was 

 collected nearly a century ago by the early explorers. A species 

 of Deinomimesa should occur, since on the other islands the two 

 genera are found together. Crahro tumidoventris , monticola, 

 unicolor, and notostictus are all present, and the three latter are 

 more noticeable amongst the guava scrub of the lower ridges. 

 The very rare and singular Crahro abnormis should be looked for. 

 I have found it at elevations of about 1500 feet elsewhere, but 

 not on Tantalus, though Blackburn's type was taken hard by. 



Nesocrabro stygius flies on the higher ridges, that are covered 

 with "leie," and preys on the metallic green flies of the genus 

 Dyscritomyia and Prosthetochaeta. 



Fourteen species of Odynerus have been found, including four 

 of the rarest species. Three of these, 0. leiodemas, eucharis, and 

 homoeophanes are red and black species, and fly in company with 

 three similarly coloured but common species; — 0. pseudochromus , 

 O. pseudochromoides , and 0. oahuensis. I always keep a special 

 lookout for these rare species and usually take a specimen of 

 one or more of them on each of my visits to Tantalus. The other 

 choice species is 0. illudens, a black species, which exactly resem- 

 bles 0. montanus and other common species superficially, and 

 flies with these. 0. unicus, rudolphi, montanus, and nigripennis 

 are generally distributed, whilst threnodes, oblitus, and dubiosus 

 are more abundant on the lowest slopes and plains. 



The bees of the genus Nesoprosopis are jacilis, difjicilis, 

 anthracina, koae, juscipennis , the parasitic volatilis, and the rare 

 and remarkable anomala. The latter, one of the finest and most 

 interesting of the native bees, I have taken in the forest of intro- 

 duced trees, and once I saw it on Tantalus itself. It is a very 

 desirable insect. The single native ant P oner a perkinsi, is found 

 in shady or damp places and is common. Its communities 

 consist rarely of more than a dozen individuals. 



The parasitic Hymenoptera are very imperfectly known. 

 There are two species of Scleroderma, and three of Sierola at least, 

 amongst the Bethylidae. They are no doubt parasitic on Cis 

 and possibly other small beetles, and they may frequently be 

 bred from deadwood infested by these. 



