GENOTYPES OF SOME ICHNEUMON-FLIES—CUSHMAN 281 
to the highly polished propodeum, not as Dalla Torre has interpreted 
it, émucw (backward) and Xestus (a proper name). 
(Opisowestus Ashmead) =Joppidium Cresson. New synonymy. 
JOPPIDIUM FERRUGINEUM (Ashmead), new combination 
Opisorestus ferrugineus ASHMEAD, Proc. U. 8. Nat. Mus., vol. 23, p. 40, 1900. 
Female.—Length (estimated) 14 mm., ovipositor sheath 6.5 mm. 
Head (missing). 
Thorax polished, striate or foveolate in pronotal scrobe and along 
all sutures and furrows; propodeum with only faint lateral traces 
of basal carina. 
Abdomen polished, finely and densely pubescent. 
Ferruginous; wings deep black with purple reflections; front and 
middle legs concolorous with body, the tarsi darker; hind leg, except 
coxa, piceous to black; first tergite broadly, others narrowly blackish 
apically. 
Type locality.—Kcuador. 
Type.—vU.S.N.M. No. 56289. 
I have seen only the type. 
Genus CRYPTOPTERYX Ashmead 
Cryptopterye ASHMEAD, Proc. U. S. Nat. Mus., vol. 23, p. 42, 1900. (Genotype, 
C. columbianus Ashmead, monobasic.) 
This genus was based on a single female in the National collection. 
Both wings on the right side, the antennae, and most of the tarsi 
are gone. 
Except for the long propodeal apophyses, somewhat prominent 
clypeus, and only slightly convergent areolet the genus seems to me 
to be rather closely related to Cryptus. In fact, if at couplet 14 in 
the key to the Cryptini the clypeus, the form of which is merely 
an exaggeration of the convexity of the clypeus of Cryptus, be con- 
sidered as not toothed or angulated, the type will run to Cryptus, 
agreeing very well with all characters. It also agrees with Cryptus 
in its concave frons, long epomia, distinct notaulices, complete pre- 
pectoral carina, strongly convex scutellum, slender antennae, sub- 
basally swollen femur, long narrow radial cell, and sagittate 
ovipositor. 
CRYPTOPTERYX COLUMBIANUS Ashmead 
Female.—Length 11 mm., ovipositor sheath 2.5 mm. 
Body mat and with short, very dense, fine, golden pubescence. 
Head strongly transverse, temples flat and strongly receding; 
occiput and frons rather deeply concave, frons with a median carina; 
