204 DEES OF GREAT BRITAIN. 



faintly clouded at their apical margins. Abdomen : the basal 

 segment, and sometimes the second also, thinly clothed with 

 pale fulvous pubescence, the apical segments have a short black 

 pubescence, the margins of the segments more or less fringed 

 with pale hairs. B.M. 



Having changed the specific name of this species, it is neces- 

 sary to give reasons for so doing. In the first place, the authentic 

 specimen in the Linnsean Cabinet is undoubtedly the present 

 species ; I have also ascertained that the next species, formerly 

 considered the retusa of Linnaeus, is not found in Sweden, 

 whereas the present insect is common. The two species may at 

 once be separated by simply examining the calcaria which arm 

 the tibiae ; in A. retusa they are pale testaceous, in A. acervorum 

 they are black. Mr. Kirby was not acquainted with the female of 

 A. retusa, at least he considered the Linnsean typical specimen to 

 be identical with A. acervorum ; but on turning to the remarks 

 on the Linnaean type in the ' Monographia,' we at once see the 

 difference between it and the next species ; Mr. Kirby says, " it 

 is smaller, not quite so hairy, nor is its hair of so deep a black : " 

 all characteristics of A. retusa, and not of A. acervorum. 



The present species is somewhat local, but abundant in many 

 situations ; it is found at Hampstead Heath, Blackheath, Charl- 

 ton, Coomb Wood, and is very plentiful at and near Shirley in 

 Surrey. It is rather later in its appearance than A. acervorum, 

 and is seldom met with much before the beginning of May. 



2. Anthophora acervorum. 



A. atra, hirsuta; tibiarum posticarum scopa fulvo-aurea. Mas, 

 corpore atro, hirsuto-fulvo ; ano nigricanti, pedibus interme- 

 diis elongatis, crinito-pectinatis. 



Apis acervorum, Fabr. Syst. Ent. p. 382. 21 $ ; Ent. Syst. ii. 322. 



36 (nee Linn.}. 



Apis Hispanica, Panz. Faun. Germ. 55. 6 (nee Fair.). 

 Apis retusa, Kirby, Mon. Ap. Angl. ii. 296. 69 $ $ . 

 Megilla acervorum, Fabr. Syst. Piez. p. 328. 2. 



Nyland. Revis. Ap. Boreal p. 266. 2. 

 Anthophora retusa, Blanch. Hist. Nat. des Ins. 406. 4. t. 7. f. 2. 



Smith, Zool. iii. 894. 1. 



Female. Length 7-8 lines. Black ; the pubescence black, the 

 posterior tibiae and the basal joint of the tarsi clothed with fulvo- 

 lerruginous pubescence ; the calcaria black. B.M. 



