48 



scarcely as long as the thorax and abdomen united, stoutish, tapering 

 towards the apex ; inclining to brown on the lower side, covered with 

 microscopic pile. Head as wide as the thorax, shining, impunctate, the 

 face somewhat protuberant, covered sparsely with white hairs ; front a 

 little depressed above the antennae ; clypeus clearly separated ; maxillary 

 palpi testaceous, labial fuscous. Thorax shining, impunctate, the 

 mesonotum sparsely, sternum and metapleurae densely covered with 

 longish white hair ; metanotum without any keels, the thoracic spiracle 

 oblong. Abdomen about double the length of the thorax, covered with 

 a longish white pubescence ; base of petiole excavated, the middle portion 

 sparsely punctured ; apical part shining, impunctate, separated from the 

 part in front by being a little raised. The other segments (except the 

 apical) are closely and rather strongly punctured ; the second is longer 

 than broad ; the others to the seventh broader than long ; the seventh is 

 longer than broad ; the eighth is narrowed gradually to the apex. The 

 edges of the second segment are testaceous at base and apex. Wings 

 hyaline, shorter than the thorax and abdomen ; the nervures and stigma 

 black; areolet ^-angled, angled on lower side; the lateral nervures 

 uniting at top ; the recurrent nervure angled a little above the middle." 

 [Ashmead, Fauna Hawaiiensis, I, Ft. Ill, p. 339, 1901.] 



This Ic'hncmnonid i)anisite Avas originally descril)e(l from the 

 Hawaiian Islands, and is generally distributed. It also occurs in 

 Mexico. " It may have l)een accidentally introduced from tliere 

 quite a numher of years ago" (Perkins). It parasitizes Pyralid 

 and Tortrit'id moths especially, and prol)al)ly others. I have not 

 hred it myself. Dr. Perkins bred it from Tortrix larvae from 

 Mexico, and in these islands he has hred it from Omiodes accepta, 

 O. blackbunn, Azinis hilarella, and two species of Cacoecia 

 The habits and life history of this parasite are probably similar 

 to Echthyomorpha maculipennis, to which it is closely related. 



IJmucrium blackbunii C'Amvrou. (Plate VI, fig. 2). 



" 9 . Length 6 mm. Black ; the mandibles, palpi, trochanters, knees 

 and tibiae (except at base and apex) , and the spurs, yellowish-white ; 

 femora and base and apex of anterior tibiae reddish ; base of four post- 

 erior femora, base and apex of posterior tibiae, blackish ; coxae and base 

 of trochanters black ; anterior tarsi fuscous ; the base of the tarsal joints 

 pale. Abdominal segments at junction white ; ventral surface at base 

 yellowish. Head, thorax, and coxae almost opaque, faintly punctured ; 

 covered with a white pubescence, which is especially long on the face. 

 Abdomen semiopaque, very finely punctured ; terebra as long as the 

 four last segments together; base of petiole smooth, almost shming. 



