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insect pests. Many species, representing many genera, are common on 
cotton, the habits of only a few of which are yet known. Below I give 
a list of those taken by me in Mississippi, describing such of them as 
were reared ironi cotton insects, in order to complete, as far as possible, 
the life histories of these insects. 
The clear-winged perilainpid (Perilampus hyalinus Say). One small 
specimen of this species, measuring only 2 mm in length, was bred August 
17, 1893, from the cocoon of Chrysopa attenuata Walk. Others were 
seen flying about cotton plants. The species has also been bred from 
lepidopterous pupae. 
Four species belonging to the Eurytomina? were captured on cotton: 
Eurytoma sp. $ ; Eurytoma sp. S ; Bruchop'hagus sp. A ; and Isosoma 
sp. $ . All, except the last, are true parasites, and their hosts will 
probably be found to occur on cotton. 
The ovate Chalcis (Chalets ovata Say) was not unfrequently met with 
on cotton. It is parasitic on various lepidopterous larva and aids 
materially in destroying the cotton worm (Aletia xylina), from which it 
has been often bred. 
Antigoiter mirabilis Walsh was captured in the act of ovipositing in 
the eggs of (Ecanthus fasciatus Fitch, a new host for it. while two dis- 
tinct species belonging to the genus Eupelmus were taken running 
over cotton leaves. 
The pleasure I have in announcing the discovery of a new genus in 
the subfamily Encyrtinae is somewhat marred from the fact that the 
species is parasitic on one of the most beneficial insects we have — a 
chrysopa-fly. It was reared from Chrysopa cocoons on cotton, and for 
which I propose the name Chrysopophagus. 
The genus may be readily recognized by the following brief diagnosis : 
Chrysopophagus gen. nov. 
General habitus of Chiloneurus Westw., the mesonotum with silvery white hairs. 
Female. — Head, viewed from in front, oblong, the eyes oblong-oval, bare, convergent 
above, the vertex narrowed, the lateral ocelli touching the border of eye, antennal 
furrows short but distinct; mandibles ( ?) bidentate; maxillary palpi 3-jointed, the 
first joint short, the last longer than the first- two united; labial palpi 2-jointed; 
antenna- 11-jointed, the rlagellum compressed and much enlarged toward apex, the 
pedicel shorter than the first funiclar joiut, the joints after the third funiclar joint 
wider than long. Thorax ovoid, the pronotum lunate, the mesonotum transverse, 
twice as wide as long, plumbeous with silvery white hair; the scutellum triangular, 
with a tuft of erect black bristles at tip : the axilla? wedge-shaped, their points meet- 
ing at base of scutellum; wings with the marginal vein very long, fully twice as 
long as the stigmal vein, or a little longer; the postmarginal slightly shorter than 
stigmal. Abdomen conic-ovate, with seven distinct segments, the ovipositor only 
slightly exposed. 
Male. — Differs from 9 in having the eyes only slightly convergent above; the 
pedicel only about one-third the length of the first flagellar joint ; the joints of the 
flagellum long, cylindrical, contracted at juncture, with long hairs irregularly 
arranged and not in half whorls as in Chilonenrus. while the scutellum is bare with- 
out a tuft of long black bristles. 
8359— No 3 3 
