OP NATURAL HISTORY. 777 



Length about seven-twentieths of an inch. 



A common species, nidificates in old wood. Forms a [400] 

 dilated oval cocoon of a ferruginous color. It seems to approach 

 Megilla metalUca Fabr., which however is said to be large, black- 

 bronze, with white wings. 



2. 0. BUCCONIS.— Black; tergum with slender white bands. 



Inhabits Indiana. 



9 Body black, with rather short gray hairs, and obvious 

 dense punctures : head rather large, long between the eyes and 

 thorax : nasus entire : mandibles with a patch of dense prostrate 

 hairs near the tip : wings hyaline : nervures fuscous : wing-scale 

 piceous: tergum with short, blackish hairs; segments rather 

 convex, narrow, white bands of prostrate short hairs, wider each 

 side ; towards the posterior extremity with numerous white, short 

 hairs, obvious in profile ; posterior tarsi with longer hairs, tinted 

 with ferruginous : venter with fulvous hairs. 



Length over three-tenths of an inch. 



% Resembles the female, but is smaller, and the tail has four 

 distant denticulations. 



Length one-fourth of an inch. 



CCELIOXYS Latr. 



1. C. 8-DENTATA nob. Appendix to Long's Expedition, p. 

 353. [Ante 1, 239.] 



9 Body rather more slender than that of the male ; the abdo- 

 men conic and polished ; head before a little pruinose, with 

 short hairs ; thoracic lines white and less obvious than in the 

 male ; feet black ; tibise and tarsi more or less piceous ; tergum, 

 with the bands white and all of them single, those of the male 

 are tinged with yellow. 



The Antliophora hide?ifata ¥., -which is said to be [401] a 

 Coelioxt/s, is described as having the abdomen brown and with 

 only two spines. 



The antennae of the tail of the 8-denta(a, resembles that of 

 C. conica L., but the middle spines are much more robust and 

 obtuse; the bands are more distinct and the abdomen opake in 

 the male. 

 1837.] 



