HYMENOPTERA OF THE HAWAIIAN ISLANDS. 205 



are shining; on the postscutellum the system of larger 

 punctures seems to fail ; the metathorax is more shining^ 

 and its sculpture seems to consist of a mixture of very fine 

 granulation and some oblique wrinkles ; tlie upper surface 

 of the hind body is not very shining, and its sculpture 

 consists of excessively minute punctuation invisible^ except 

 under a very strong lens ; while the undersurface is simi- 

 larly punctured with the addition of a system of much 

 larger but very feeble shallow punctures. 



The female (save in the usual respects) does not differ 

 much from the male ; it is larger, however, and the colour- 

 ing of its head consists in a slender yellow line along the 

 internal margin of the eyes. 



I obtained three specimens of this little insect on the 

 western slopes of Mauna Loa^ Hawaii, at an elevation of 

 about 6000 feet, in May. 



7. Prosopis coniceps, sp. no v. 



Niger^ flavo-variegatus, punctatus ; capite brevi pone an- 

 tennas tumidulo; clypeo antice rotundato; alls hya- 

 linis. 



^ . Antennarum articulo basali compressor minus elongato. 



Long. (^ 6j millim. 



In this species the markings on the head are peculiar, — 

 the anterior third of the clypeus is entirely yellow, the 

 posterior quarter entirely black, the apical yellow being 

 produced backwards in the middle of the intervening space 

 as a broad band, while the basal black is narrowly pro- 

 duced forwards on either side of it; there is also a large 

 yellow triangle on either side between the clypeus and the 

 eye. The yellow colouring does not extend as far back- 

 wards on the head as to the base of the antennae. The 

 front side of the front tibise is yellow ; the tarsi are tes- 



