Mr. Weshvood's Note upon the Impregnation, hic 231 



Long. Corp. 10^ lin. Exp. tegm. If unc. 



Habitat in Brasilia ? In Mus. Doma Edwards — Haworth. 



Velvety black, and subpubescent. 



Head black, with the face, nose, and upper lip tinged with blue, the 

 terminal joints of the palpi with a pale reddish line beneath, at the base. 

 Eyes grey. Antennse with the eleven basal joints, and the base of the 

 twelfth black, the tip of the twelfth and the four following fulvous, the 

 remainder brown. 



Prothorax black, the deflexed posterior lobes or sides blue-black ; legs 

 black, intermediate femora with a small dull pale spot in the centre ; pos- 

 terior femora with a larger and brighter yellowish triangular spot. 



Tegmina velvety black. 



Wings brownish black, darker at the anterior margin. 



Abdomen black, tinged with greenish blue, which is most conspicuous 

 at the apex. 



Beneath — the basal portion of the legs and the belly are of a greenish 

 black, tinged with violet. 



The above description 1 have drawn from a male specimen kindly lent 

 to me by Mr. Edwards, with whose name I have inscribed it, as a slight 

 token of regard, and in return for his repeated liberality and kindness to 

 me in my entomological pursuits. He is uncertain of its locality, and he 

 informs me that he possessed a second male specimen, now in the exten- 

 sive Orthopterous Cabinet of A. H. Haworth, Esq. 



This species might, on the first glance, be mistaken for one of the large 

 black-winged exotic species of Sphex, which it much resembles in gene- 

 ral colour and appearance. 

 Chelsea, September, 1828. 



Art. XXVII. A Note upon the Impregnation of the Arach- 

 nida. By J. O. Westwood, F.L.S., 8$c, 



It is an observation which cannot be too strongly impressed upon the 

 minds of modern entomologists, who, far too generally consider that their 



