46 AXDREXIDJE. 



This species appears in April ; it is generally distributed, and has 

 been found both in Scotland and Ireland ; it commonly frequents 

 the dandelion (Leontodon taraxacum). An additional interest 

 attaches to this bee from the fact of its being the species from which 

 Mr. Kirby first obtained the Stylops melittce ; and although it has 

 been found since attacked by that parasite, it is not the species 

 commonly infested. Near London A. atriceps and A. trimmerana 

 are much more frequently stylopized. 



25. Andrena trimmerana. 



A. nigra, griseo rufescente pubesceus, tibiis posticis scopa versi- 

 color!. 



Andrena trimmerana, Smith, Zool.v. 1740 ; Bees Great Brit. 72 J $ . 



Nyland. Notis. ur Sallsk. pro Faun, et Flo. Fenn. ii. 252. 



Schenck, Nass. Bien. 237. 



Thorns. Hym. Scand. 85. 

 Melitta trimmerana, Kirby, Man, Apum Angl. ii. 116 $. 



Female. Length 5|-6 lines. — Black ; the face clothed with dark 

 brown pubescence, at the sides and above the insertion of the 

 autennae it is black ; the antennae half the length of the thorax, 

 which is clothed above with rufo-fulvous pubescence; the wings 

 hyaline, their apical margins slightly clouded; the legs have a 

 fuscous pubescence above, the femora fringed with pale fulvous ; 

 the floccus and the scopa beneath glittering silvery white, the 

 latter dark fuscous above ; the apical joints of the tarsi ferruginous. 

 Abdomen ovate, thinly covered with pale fulvous pubescence, the 

 apical fimbria black or dark brown ; the margins of the segments 

 beneath testaceous and thinly fringed with pale pubescence. B.M. 



Male. Length 5-6 lines. — The head wider than the thorax : the 

 mandibles forcipate and subdentate at their base, the tips ferrugi- 

 nous : the face has a reddish brown pubescence at the sides, inter- 

 mixed with black above the clypeus ; the antenna as long as the 

 thorax, the joints of the flagellum arcuate. Thorax shining, the 

 pubescence on the disk sparing, rufo-fulvous, at the sides and 

 beneath much paler, as well as that on the legs ; the apical joints 

 of the tarsi rufo-testaceous. Abdomen shiuing, lanceolate, and 

 having a tuft of pale ferruginous pubescence on the basal segment, 

 the margins of the first two segments usually slightly depressed ; a 

 thin pubescence is scattered over the abdomen, particularly at the 

 sides ; the apex rufo-testaceous and having a little fulvous pubes- 

 cence. B.M. 



This is a very well-marked species ; the female has unusually long 

 antennae, and has the scopa on the posterior tibiae black above and 

 silvery white beneath ; the male also has the antennae longer than 

 is usual in the genus, and has also a tuft of pubescence at the base 

 of the abdomen. It appears in April, and is common in the London 



