67 
Description of a Cuckoo-wasp from the Hawaiian Islands 
(Hymenoptera). 
BY S. A. ROHWER. 
Bureau of Entomology, Washington, D. C. 
(Presented at the meeting of August 4, 1921.) 
So far only one species of Chrysididae has been recorded 
from the Hawaiian Islands, and it seems to be undescribed. 
It has, however, been known to the entomologists of the Islands 
only since June, 1914, when a specimen was taken by Mr. 
Potter and formed the basis of a short note presented by 
Swezey to the Hawaiian Entomological Society (see Proc. Haw. 
Ent. Sec. Vols 3, Nor2) 1915, ps 71). Since then the species 
has. become more abundant, and in Proceedings of the Hawaiian 
Entomological Society (Vol. 3, No. 3, Sept., 1916, p. 142) 
Mant exhibited a number of specimens. The species has never 
been identified, but it has been assumed that it was introduced. 
In 1917 (Proc. Haw. Ent. Soc:, Vol. 3,. p. 288), Bridwell re- 
cords having found adults of this Chrysidid in nests of Sceli- 
fhron at Diamond Head, Oahu. To accompany a letter dated 
June 4, 1921, P. H. Timberlake sent six specimens of this 
wasp to the United States National Museum for identification 
and referred to them as follows: 
“T also send six specimens of a Chrysidid which was first 
taken here in 1914, and is now fairly common in Oahu. It 
has not been taken on the other Islands, although Mr. Swezey 
saw one on Kauai last summer, but was unable to catch it. It 
is known to parasitize the common Sceliphron caementarium.” 
It is unfortunate that there are no records which would 
indicate the native home of this species. At first thought one 
would think that it had been introduced with its host, but this 
cannot be the case because there is no Chrysidid of the sub- 
genus Pentachrysis known from the native home of Sceliphron 
caementarium. Certain species of Chrysidids* are known to 
Proc. Haw. Ent. Soe., V, No. 1, Oetober, 1922. 
* Besides those mentioned by Dalla Torre (Catalogue Hymenopter- 
orum vol. 6, 1892) and Kohl (Ann. Naturh. Hofmus. Wien, bd. 32, 1918, 
p. 167) the following may be added: Chrysis (Hexachrysis) durga Bing- 
ham on Sceliphron intrudens Smith and Chrysis (Trichrysis) tridens 
Lepeletier on Sceliphron caementarium (Drury). 
