GENOTYPES OF SOME ICHNEUMON-FLIES—CUSHMAN 279 
second; nervulus postfurcal, the vein between it and basal very strongly 
oblique; abscissula and intercubitella equal in length; nervellus 
sharply broken at lower fourth. Legs long and slender; coxae 
sparsely punctate; femora, tibiae, and tarsi with dense, very short 
pubescence, the last two with scattered, minute spines, tarsi slender, 
each succeeding joint more slender than the preceding. 
Abdomen polished, sparsely and minutely pubescent; postpetiole 
about a half wider than petiole; second segment equal in length to 
first; squama of genitalia thick and opaque. 
Black; head, mandibles, scape, pedicel, and broad anterior margin 
of pronotum ferruginous; flagellar joints 10 to 14 pale; wings brown- 
ish, front wing with a broad hyaline band extending from base of 
stigma to about apical third of radial cell and nearly to posterior 
margin; hind wing hyaline along folds and in middle of brachiellan 
cell; tergites 5 to 8 white and submembranous apically, 7 and 8 so 
nearly to bases medially. 
Type locality —Central Africa. 
Host—‘Sphinx chrysalis.” 
Type.—vU. 8S. N. M. No. 56287. 
A single male specimen taken by I. Helen Moffat. 
Genus METARHYSSA Ashmead 
Metarhyssa ASHMEAD, Proc. U. S. Nat. Mus., vol. 23, p. 40, 1900. (Genotype, 
M. bifasciata Ashmead, monobasic. ) 
The genotype was recorded as from Africa. In the collection 
in the National Museum are two male specimens from Africa labeled 
by Ashmead “Opisthorhyssa bifasiata Ashm.” that run to Metarhyssa 
in Ashmead’s key. There appears no doubt that these specimens 
constitute the basis of the description of Mfetarhyssa, and that Ash- 
mead changed to Metarhyssa to avoid confusion between Opistho- 
rhyssa and Opisorhyssa Kriechbaumer, 1890. It should be noted that 
in Opisthorhyssa (behind+rugose) Ashmead undoubtedly referred 
to the same character as in Metarhyssa (between+rugose), that is, 
the transversely striate “metathorax.” The specific name “difasiata” 
is an obvious lapsus for bifasciata. 
As thus typified, the genus belongs to that group of genera of the 
Cryptini characterized by truncate clypeus with or without a median 
tooth, rather long propodeum with at most the basal carina, first 
tergal spiracles placed at or near the middle, and, in the female, by 
inflated front tibiae and long seventh and eighth tergites. Other 
members of this group are Echthrus, Agonocryptus, Torbda, 
X oridescopus, etc. 
