1880 . J 
85 
NOTES ON SPECIES OP ACULEATE 1IYMEN 0 PTE R A OCCURRING- 
IN THE HAWAIIAN ISLANDS. 
BY TIIE KEY. T. BLACKBURN, H.A., AND W. E. KIRBY. 
Some months ago, the Kev. T. Blackburn forwarded a collection 
of Hawaiian Hymenoptera to the British Museum, and most of the 
new species were described by the late Mr. E. Smith, in Journ. Lin. 
Soc., xiv, pp. 675 — 685, and are also included in bis posthumous 
“ Descriptions of new species of Hymenoptera in the collection of the 
British Museum,” published in the autumn of 1879. 
Since that time, Mr. Blackburn has forwarded some additional 
notes, which I include, at his request, in the present paper (W. E. K.). 
1. Prosopis JBlaclcburni , Smith. 
(Nos. 4 & 5). — If these two are the same species, the sexes differ 
considerably. This insect is not uncommon at flowers in sandy places 
on the island of Maui (T. B.). 
2. Prosopis fuscipennis , Smith. 
(No. 9). — Perhaps generic-ally distinct from the other species. I 
have a single 7 not noticeably differing from the <$ , except in the 
number of joints of antennae, and in the greater width of the ab- 
domen (T. B.). 
3. Pros op is facilis , Smith. 
(Nos. 6 & 7). — Eairly common in various localities in the moun- 
tains of Oahu (not Maui), generally flying about the face of bare 
precipices (T. B.). 
4. Prosopis Inlaris , Smith. 
(No. 8). — Occurs in company with P. Plackburni. I have not 
seen any specimens which I could regard as the ? of this insect (T. B.). 
5. Prosopis volatilis, Smith. 
(No. 25). — Occurs rarely in Oahu (not Kauai), usually in com- 
pany with P. facilis (T. B.). 
6. Prosopis jiavifrons , sp. n. 
(No. 24). — Length, 2f lines. Black, wings hyaline and iridescent., clouded 
towards the extremity. Face below the antenna) bright yellow, antenna; reddish 
beneath towards the extremity. Head and thorax dull black, closely punctured. 
Abdomen shining black, hardly punctured ; extremities of the tarsi reddish. This 
species is ticketed carbonaria, Smith ; but I cannot find that it has boen described ; 
and the specific name has already been used in the genus (W. E. K.). 
Taken at flowers on Kauai, very sparingly (T. B.). 
