Insects. 547 



present in hortorum on the first abdominal segment. All the sexes 

 are similarly coloured ; the male in this species has a black face. 



Sp. 8. BOMBUS SCRIMSHIRANUS. 



A. Scrimshirana, Kirby's Mon. 



The female of this species resembles the same sex of hortorum, but 

 it is smaller, and the head is much rounder : the corbicula is pale ful- 

 vous, whereas that of hortorum is black ; the neuter is similarly co- 

 loured. I consider the A. Jonella of Kirby to be its male : it resembles 

 the male of hortorum, but differs in having the head nearly round and 

 the face clothed with yellow hairs. This species is not common : I 

 only possess two males, a female and two neuters. 



Sp. 9. BOMBUS SOROENSIS. 



A. Soroensis, Fab. A. Tunstallana, Kirby's Mon. Var. 



Mr. Kirby suspected these varieties constituted but one species, but 

 he possessed no sufficient grounds for placing them together. All 

 doubt is now removed, Mr. Pickering having taken A. Latreillellus 

 [Kirby] in copula with A. Soroensis ; and I have taken the same male 

 more than once similarly connected with Tunstallana. The female 

 varies from having a yellow band on the collar, a patch of the same 

 colour on the scutellum, and a white tip to the abdomen, by gradual 

 shades of difference, to an insect totally black. I possess all the links 

 of variety. The black variety so exactly corresponds with the origi- 

 nal specimen of A. subterranea in the Linnean cabinet, that I confess 

 my inability to detect the slightest difference ; also in the Museum of 

 the Entomological Society is a specimen named " subterranea " by 

 Gyllenhall, and sent (together with a number of Bombi) by that au- 

 thor to Mr. Kirby : this exactly corresponds with the Linnean speci- 

 men. I have never seen a male in any collection ; nor has one I 

 believe, been described by any author : that so described by Mr. Kir- 

 by I have shown is a Psithyrus. I am therefore inclined to think sub- 

 terraneus identical with a black variety of Soroensis. The only black 

 British species (B. Harrisellus) wants the pale hairs at the tip of the 

 abdomen, and its pubescence is not so coarse as that of subterraneus 

 the abdomen is also of a different form. 



Sp. 10. BOMBUS TERRESTRIS. 



A. terrestris, Linn. Kirby's Mon. 

 There is a specimen of the female of this bee in the Linnean cabi- 



