1908] GIRAULT — NORTH AMERICAN CHALCIDOIDEA 117 



is easily visible to the naked eye, and then appears to be black, with two-banded 

 wings. No other species of this genus has yet been discovered in North America. 



Seen through a lens (J-inch, Coddington), the species appears as under the 

 microscope (§-inch objective, Bausch & Lomb). 



Described from 2 balsam sUdes of females, received from Dr. L. O. Howard, 

 Chief of the Bureau of Entomology, U. S. Department of Agriculture, Washington, 

 D. C, and labeled as follows: "9900^. appears to be a parasite of eggs of Anazipha 

 exigua. D. C. May 6, 1905." and "9900'^. from eggs of Anazipha exigua. D. C. 

 May 29, 1905." Dr. Howard further informs me that the host eggs of this parasite 

 were in the stems of rose mallow on the grounds of the Department of Agriculture, 

 Washington, D. C. Reared by Mr. Theodore Pergande. 



Type: — No. 11,846, U. S. National Museum, Washington, D. C, 1 female. 

 Cotype, Accession No. 37487, Ilhnois State Laboratory of Natural History, Urbana, 

 Illinois, 1 female. 



Family EULOPHIDAE. 



Subfamily Aphelininae. 



Tribe Aphelinini. 



1. Prospaltella fasciativentris species nova. 



Female: — Average length 0.836 mm.; wing expanse, excluding cilia, 1.745 

 mm.; width of fore wing, 0.29 mm.; length of fore wing, 0.691 mm. 



Ground color, dull pale cadmium yellow. The abdomen piceous, shining. 

 Head varicolored; the face silvery white bounded below (the oral surfaces and 

 cephalic cheeks) with piceous, deeply concave; face and clypeus transversely rugu- 

 lose; the oral opening pale yellow; cheeks finely hned; vertex pale cadmium yellow 

 with some dusky, rugulose transversely; postgenae silvery, finely lined, lower half 

 piceous; occipital region silvery, darker cephalad, with a single, irregular transverse 

 fascia of dusky running through the middle, and originating with the lower piceous 

 portion of the postgenae, margined with dusky caudad (above), finely lined; ocelli 

 ruby red, in a triangle, the distance between the lateral oceUi is greater than the 

 distance between each and the margin of the eye, and the distance between each and 

 the cephaUc ocellus; cephalic margin of vertex concave; a distinct dark carina, 

 tracing a concave line from eye to eye, on the caudal margin, touching each lateral 

 ocellus; eyes dark reddish, ovate, moderately coarse, and bearing moderately thick, 

 short, whitish hairs from its surface. 



