OP NATURAL HISTORY. 777 



Length about seven-twentieths of an inch. 



A common species, nidificates in old wudd. Fonn.s a. [4001 

 dilated oval cocoon of a fcrruu'inou.s color. It .sotnns to approach 

 Mrgilla mctallint Fabr., which however is said to be lar-'c black- 

 bronze, with white wings. 



2. 0. iJUCCONis.— Black; tergum with slender white bandj;. 



Inhabit.s Indiana. 



9 Body black, with rathor short gray hairs, and obviouc 

 dense iiunctures : 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 ; .segnu'iit.s rather 

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

 side ; towards the posterior extremity with numerous white, Bhort 

 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. 



L C. 8-DEXTATA 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 ; tibiaj and tarsi more or less piceous ; tcrguni, 

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

 are tinged with yellow. 



The Anthophora bidentatit F., which is .said to be [401] a 

 Cwlio.rt/.s, is described as having the abdomen bmwn and with 

 only two spines. 



The antenna; of the tail of the S-dcntafa, resembles that ol 

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

 obtuse; the bands are more distinct and the abdomen o|>akf iu 

 the male. 

 1837.] 



.IJ UU^BlBi 



