60 ANDRENID^. 



This is a very local insect ; I have not taken it in the immediate 

 neighbourhood of London ; but it occurs at Weybridge in June and 

 July, also at Blackwater, Hants, and at Bristol. Mr. Kirby took 

 it plentifully at Barham ; it frequents the hawkweed (Hieracium 

 pilosella). 



45. Andrena fulvescens. 



A-. nigra, fulvo pilosa, tibiis tarsisque posticis fulvis, abdomine 

 apice fulvo. 



Andrena fulvescens, Smith, Zool v. 1732 ; Bees Great Brit. 89 S 2 • 



Schench, Nass. Bien. 241. 



Thorns. Hyn». Scand. ii. 111. 

 Andrena cinerascers Nyland. Not is. ur Sallsk. pro Faun, et Flo. 



Fenn. i. 216. 

 Andrena nasalis, Thorns. Opusc. Ent. 156. 



Female. Length 5 lines. — Black ; the face clothed with short ful- 

 vous pubescence ; the mandibles ferruginous at their apex ; the 

 nagellum rufo-piceous beneath. Thorax clothed above with a thin 

 fulvous pubescence ; the wings fulvo-hyaline, the nervures rufo- 

 testaceous ; legs obscure rufo-piceous, the posterior tibiae and tarsi 

 rufo-fulvous, all the claws of the same colour ; the pubescence on 

 the legs fulvous, the scopa bright fulvous. Abdomen ovate, shining, 

 and very finely and closely punctured, except on the basal segment, 

 where the punctures are distant ; the apical fimbria bright 

 fulvous. B.M. 



Male. Length 4-4^ lines. — The pubescence griseous, on the vertex 

 and disk of the thorax tinged with ochraceous, that on the clypeus 

 white ; the clypeus yellowish white, black at the base forming a 

 semicircular shape which is bisinuate on each side of its margin 

 anteriorly ; the wings resembling those of the female, but the ner- 

 vures and stigma rather darker ; the apical joints of the tarsi fer- 

 ruginous. Abdomen oblong-ovate, the apex testaceous, thinly 

 sprinkled with cinereous pubescence. B.M. 



This insect appears in June, and is very local, but forms large 

 colonies, appearing to prefer hard trodden pathways in which to 

 excavate its burrows ; it used to be plentiful on Hampstead Heath, 

 I found a very extensive colony near Blackwater, Hants ; the swarm 

 hovering over their burrows produced a loud humming ; this colony 

 has existed, to my knowledge, about twenty years. The species fre- 

 quents the hawkweed (Hieracium pilosella). 



B. The apical margins of the segments having white fasciae. 



46. Andrena bucephala, 



A. atra, pallido villosa, thorace fulvo, tarsis omnibus rufis ; 

 abdomine ovato, fasciis tribus interruptis albis. Mas capite 

 magno. 



