12 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.64. 



slightly decurved, spiracle beyond apical third; postpetiole about 

 three times as wide as petiole, a deep fovea on each side at junction 

 of petiole and postpetiole ; spiracles of second tergite slightly before 

 middle, gastrocoeli slightly removed from base; ovipositor slightly 

 exserted. 



Ferruginous ; head black with clypeus, mouthparts, and scape and 

 pedicel largely yellowish; flagellum black, apex reddish; radices of 

 wings and tegulae white ; front coxae, front and middle trochanters, 

 their tibiae outwardly and their tarsi stramineous; calcaria white; 

 legs otherwise testaceous; sheath black. 



Male. — In form and structure like female except in usual sexual 

 differences. Front and middle legs entirely, and hind coxae beneath 

 and their trochanters white. 



Host. — Olene hasifiavus Packard. 



Type locality. — Stonington, Connecticut, 



Allotype locality. — Rochester, Massachusetts. 



Other locality.— M^SLvion., Massachusetts. 



Type.— C?it. No. 25921, U.S.N.M. 



Described from three females and one male reared at the Gipsy 

 Moth Labratory, Melrose Highlands, Massachusetts, under Nos. 

 12209 (type and paratype «), 10067 d J^. (paratype &), and 10067 

 c 1 (allotype). 



The cocoon of this species is very remarkable. The cocoon proper 

 is spun inside the skin of the host exactly as in Hyposoter fugitions 

 (Say), but on the ventral side and protruding through a slit in the 

 skin of the host is a small cocoon-like structure with its anterior end 

 open as though some smaller insect had emerged from it. 



ECHTHRONOMAS OCHREOFRONS, new species. 



Because of its rather elongately oval propodeal spiracle, rather 

 weakly compressed abdomen, and long calcaria this species runs to 

 Echthronomas in both Foerster's and Schmiedeknecht's keys, and 

 agrees in structure perfectly with the latter's description of the 

 genotype, ochrostoma Holmgren; but aside from the shape of the 

 spiracle it does not seem to me to differ generically from species 

 placed by American writers in Hyposoter., Flypothereutes., Ischnos- 

 copus., and Ameloctonus and those assigned by European writers to 

 Anilastus, all of which have been synonymized by Gahan^ under 

 Hyposoter. Moreover, I doubt if the male, which I do not know, 

 would differ even in the form of the spiracle from Hyposoter. In 

 fact, I have before me a certainly congeneric, though not conspecilie, 

 male with even more elaborate yellow markings, that has the spiracles 

 perfectly circular. 



Female. — Length, 8 mm.; antennae, 8 mm. 



'■ IToc. U. S. Nat. Mus., vol. 48, 1914, p. 156. ' 



