( vi ) 
4g dg and 29 of M. didyma, var. deserticola, Oberth., from 
Algeria. J. didyma, var.nexra,3 $ ¢ and4 9 9? from Syria and 
Asia Minor, and 1 large dark 9 from Sicily = var. meridionalis. 
9 oF GENUS DoryLus.—The PresipENT exhibited a female 
example of the genus Dorylus. It was sent to the Museum 
from Mengo in Uganda by the Rev. Ernest Millar. There 
were with it in the same tube one small and two large workers, 
which may probably be the means of identifying the species at 
some future time. The workers closely resembled specimens 
in the Museum named PD. arcens, which are said to be the 
same as nigricans. ‘The specimens just received were, how- 
ever, perfectly smooth and shining, whereas those named 
arcens were somewhat dull. 
» The female measured 1} inchesin length. It was of blackish 
mahogany colour, smooth and shining, with the jaws, flagellum 
of the antenne, sides of the head, the middle of the thorax, the 
legs, and a narrow margin to each abdominal segment, pitchy 
red. 
The female of one species of this genus from Java was 
described by Dr. Gerstaecker in the Stettin ‘‘ Entomologische 
Zeitung,” for 1863, p. 91, and figure on plate 1. Three others 
have been discovered since. 
The present insect agreed in general form with that figured 
by Dr. Gerstaecker, but the prolongations of the apical seg- 
