154 A. FE. Verrill—The Bermuda Tslands. 
Ichneumon-flies. (Ophion, etc.) 
Several undetermined species of ichneumons were obtained. Among 
them is a species of Ophion very much like our common large 
species (O. macrurus). 
Cockroach Ichneumon. (Hvania appendigaster = EF. levigata 
Olivier; Packard, Guide, p. 194, fig. 173.) Figure 109. 
This very interesting species was recorded by Jones, 1876. We 
obtained a specimen in April. It lays its eggs in the egg-cases of a 
cockroach (usually the American Cockroach), and its larva finds its 
nourishment and shelter within the case. Thus this useful insect 
destroys continually great numbers of cockroach eggs. Its body is 
black; thorax glossy and punctate. It is found also in North Amer- 
108a Illa 
Figure 108a.—Blue Mason-wasp (C. caruleum, x about 14; phot. by A. H. V-. 
from a Bermuda specimen. Figure 11la.—Ant (Pheidole pusilla); a, minor 
worker; b, major worker or soldier, both much enlarged; t, distal end of 
tibia ; c, tibial comb ; from drawings of Bermuda specimens by A. H. V. 
ica, Hawaiian Is., West Indies, etc. According to Miss Hayward, 
who has sent specimens, it is common on flowers of honeysuckle in 
August. October, L. Mowbray. In turn it has an ichneumon 
parasite (Entedon Hagenow?) which destroys its larva, but whether 
the latter occurs in Bermuda is not known. 
Ants. (Hormicarie.) 
Ants of several undetermined species were collected by us which 
have not yet been fully studied by a specialist; none of them were 
winged. 
Among the recognized species observed are the small House-ant 
(fig. 110), and the Garden-ant or Pavement-ant (fig. 111), belong- 
ing to the Myrmicidz. Probably these were early introduced from 
England. The early writers, however, mention certain ants as 
