324 Mr. NEw»onr on the Natural History 
(Ranunculus acris, L.), in a damp field at Bishop's wood, Hampstead, that 
he might have collected thousands of them, there being often as many as 
twenty specimens in the corolla of a single flower*. But he never found a 
yellow-coloured specimen on any of the Andrenide. Like myself, he has 
taken the yellow-coloured ones on Volucella, the dipterous parasite of the 
nests of Bombi; on the Nomade, themselves parasitic on other bees, chiefly 
Eucera, Andrena and Colletest, and also. on the Halicti. It was on these 
genera that yellow-coloured larvae were found by Geedartf, Frisch $, Reau- 
mur ||, DeGeer $f, Walckenaer** and De Tigny tt. Latreillett ti when speaking 
of those described by DeGeer, says, that he has himself many times met with 
these larvee crowded together on grass; at the roots of which, as I have 
already shown, the Meloé always deposits her eggs, and the young, quickly 
after they are batched, ascend from thence into the flowers of the Ranunculus 
and Taraxacum, in which I haye myself detected them. 
On examining the black-coloured specimens, which Mr. Smith obtained from 
the Andrenide, I have found that they are perfectly distinct from those which 
I know are produced from the eggs of the three species of Meloé already 
mentioned. They are of larger size, and are of a deep jet-black colour, except- 
ing only the legs, which are dark testaceous. Thus they are identical in 
character with the supposed Pediculus Melitte, taken by Mr. Kirby also on 
Andrena.. They approach closely in general appearance to the yellow speci- 
mens found on Nomada, which I am satisfied are the young of some species 
of Meloé. They have a similar general form of body, and the same number of 
segments and of caudal setze, the exterior pair of which are the shortest. They 
both have large and powerful thighs, long convex tibize, and long claw-like 
tarsi, each formed of three digitations, of which the middle digitation only 
* Trans. Ent. Soc. Lond. vol. iii. p. 294. 
T Trans. Ent. Soc. vol. iii. part 4. p. 294. I have taken Nomada Sheppardana in the nest of Colletes, 
and Mr. Smith has taken other Nomade in those of Eucera, Andrena and Colletes (see Trans. Ent. Soc. 
vol. iii. p. 293, 1843 ; and Zoologist, June 1844, pp. 587-606). 
1 Mémoires Nat. Hist. Ins. t. ii. p.180. $ Insecten, fasc. vi. p. 15. 
l| Mémoires, tome iv. p. 490. € Mémoires, tome v. p. 8. 
** Mém. sur le gen. Halictus, 1817, p. 85. Tt Hist. Ins. tome vii. p. 647. 
+} Hist. Nat. des Crust. et des Ins. t. x. p. 380. 
