340 Mr. Newport on the Natural History 
to the naked eye they closely resembled. They were intermingled with, and 
adhered very tenaciously to the hairs, and walked about on the body of the 
Andrena like the larvee of Meloé on the Anthophora, but far more slowly. 
Mr. Smith* has published a few remarks on the larve obtained from this 
insect. Besides this specimen, Mr. Smith captured one other, which con- 
tained. three pupae of Stylops, from one of which a male Stylops came forth 
on the following day. This male he has figured as the Stylops Melitta of 
Mr. Kirby ; but there is reason to believe that, although it approaches closely 
to that species, it may be distinct from it, and perhaps is yet undescribed. 
Should this prove to be the case, I propose to describe it as Stylops aterrimus, 
from its uniform and intense black colour. It resembles Mr. Kirby's insect 
in size, general colour, shortness of the abdomen, and pedunculation of the 
eyes, and in the front of the head being obsoletely trilobed ; but it differs in 
having the occipital border of the head deeply emarginated, whilst in the 
figure of Stylops Melittet given by Mr. Kirby this is entire. The antenna, 
head, thorax, wings, legs and abdomen are all of a deep black. Further, it 
may be worthy of remark, that the species of bee on which it is a parasite is 
Andrena Trimmerana, Mr. Kirby’s being Andrena nigro-cenea. 
About the time of capturing the specimens above-mentioned, Mr. Smith 
informs me that he took also two or three stylopized male bees, in one of 
which there were two specimens of the parasite. Stylopized male Hymeno- 
ptera however, he remarks, are exceedingly rare. In this he coincides with 
Jurine and Siebold. 
Tae Larva or Sryrops. 
The larvae of Stylops obtained from the specimen of Andrena Trimmerana 
I have no doubt were of the same species as the male Stylops aterrimus from 
the same insect. The length of time which elapsed between the capture of 
the bee on the 8th or 10th of May, and the 25th of the same month, that at 
which the parasite began to produce the larvee, is an interesting matter for 
consideration, with reference to the period which usually elapses between the 
impregnation of the female and the hatching of her young. Supposing the 
female Stylops, at the moment when the bee was captured, to have been only 
* Loe. cit. | 
T Kirby, Monog. vol. i. tab. 14. fig. 11. 1, a. (loc. cit. vol. i. p. 257. No. 11.) 
