200 MESSRS, T. BLACKBURN AND P. CAMERON ON THE 



other island is, I feel no doubt whatever, due genuinely to 

 the Hymenopterous wealth of the island. 



ANTHOPHILA. 



ANDRENIDiE. 



In this family the indigenous species are not improbably 

 confined to the genera Megachile and Prosopis. Apis 

 mellifica, Linn., is of course introduced, and it can hardly 

 be thought likely that Xylocopa mneipennis, De Geer, is a 

 true native of the islands. It may fairly be questioned 

 whether the destructiveness of the latter does not more 

 than counterbalance the profitableness of the former. The 

 habits of the single Hawaiian species of Megachile noticed 

 by me have been fully reported by Mr. F. Smith. The 

 descriptions &c. of the species of Prosopis found on the 

 Archipelago are so scattered, and contain so many slight 

 inaccuracies, that I think it might be well for me to review 

 them seriatim, adding descriptions of certain additional 

 species, and furnishing a Table of their distinctive cha- 

 racters, as follows : — 



I. Prosopis fuscipennis. 



Prosopis fuscipennis, Smith, Proc. Linn. Soc. xiv. p. 682 ; Kirby, Ent. 

 Month. Mag. xvii. p. 85. 



I have nothing to add to the excellent description of 

 this species in Mr. F. Smithes two papers. I have never 

 taken it elsewhere than on Oahu, and there only rarely. 



2. Prosopis satellus, sp. n. 



Niger J confertim punctatus ; clypeo (antice rotundato), 

 antennarum articuli basalis fronte, tarsis tibiarum- 

 que anticarum fronte, testaceis, antennarum articulo 

 basali valde compresso ; alis fuscis. 



Long. 1 1 millim. 



