6 
Genus SPILOCHALCIS Thomson. 
Head triangular; antenne separated at base by a triangular notched elevation ; 
thorax usually marked with yellow ; metathorax rugose ; fore wings with long mar- 
ginal and postmarginal veins ; abdomen, subglobose; petiole, moderately long, cylin- 
drical; posterior margin of the femora densely serrate, except in missouriensis, which 
has four widely separated teeth; posterior tibiz produced into a spine, and middle 
tibie with a distinct spine. 
2. (1) Spilochalcis mariz (Riley). . 
This common parasite has been reared from the following insects: 
Antherea polyphemus.—24 $, 23 2 specimens were bred from a 
cocoon of this species by V. IT. Chambers, at New Orleans, La., in 
1869. The collection also contains specimens bred from the co- 
coons of this moth by Dr. Hoffmeister, at Fort Madison, Iowa. 
[C. V. R. Coll.] 
Samia cecropia.—Specimens bred by Mrs. Treat, at Vineland, N. J. 
(Oa Vouk. Coll:| 
Callosamia promethea.—Same as preceding. [C. V. R. Coll.] 
Attacus cynthia.—From a lot of 202 cocoons received from S. 
Lowell Elliot, New York City, were bred, in May, 1881, 113 ?’s, 
36 $’s. The former varied from 4™™ to 8™™ in length, and the 
latter from 3.57" to 6™, [Dept. Agr. Coll.] 
Specimens bred from this species were received from A. H. 
Mundt, Fairbury, Il. [C. V. BR. Coll.] 
Thyridopteryx ephemerceeformis.—A specimen was bred from a bag 
of this insect, May 11, 1869, at Saint Louis. [C. V. R. Coll.] 
3. (2) Spilochalcis missouriensis n. sp. 
Female.—Length,5™™. Posterior femora with four widely separated teeth. Color, 
bright scarlet, marked with black as follows: Flagellum of antenneg, with the excep- 
tion of club at tip; clypeus and occiput; a large circular spot on the mesonotum; a 
trausverse band ou the metanotum; an irregular spot on each side near tip of abdomen ; 
a large spot on each side of the thorax just below tegulz ; a dorsal spot near the tip 
of the posterior cox ; a minute circular spot on the dorsum of each hind femur, and 
two large round spots latero-ventrally, one in the middle and one at tip; spines of 
femur; a spot at the base of the hind tibiz. The wings are slightly dusky, with a 
pronounced fuscous spot around club of stigmal vein; stigmal club securiform, 
entire ; all wing veins brown. 
Described from 1 captured 2? (¢ unknown), Saint Louis, Mo., July. 
[C. V. R. Coll.] 
Seems to come nearer to Smicra laniert (Guer.), Cuba, than to any 
other described species. 
4. (3) Spilochaicis virens, n. sp. 
Male.—Length, 8™™; expanse, 1¢™™; greatest width of fore wing, 3.2™™. Resembles 
somewhat Sm. maria (Riley). Pedicel short and slender; hind femora, 12-15 toothed. 
Colors, black and yellow; facial grooves, vertex, and occiput black ; remainder of head 
yellow; scape of antenne yellow, black above near tip; flagellum, black; first three 
joints brownish below; pronotum yellow, with a black spot anteriorly and one at 
each dorsal lateral angle ; mesoscutum black, with four narrow longitudinal stripes ; 
