120 



BEES OF GREAT BRITAIN. 



partially so ; the spots on tlie scutellum of the male frequently 

 disappear; and a variety is met with^ but rarely, in which the 

 rufous spots are replaced by yellow ones. This species may be 

 noticed entering the burrows oi Andrena Trimmerana, A.nitida 

 A. varia and A.fulva ; its attacks are very general, 



JV. rujicornis is perhaps the most universally distributed spe- 

 cies of the genus; it is found in all parts of the United Kingdom 

 throughout Europe, and also in North America and Canada. ^ 



2. Nomada lateralis. 



N. atra, thorace.;ufo obscure quadrl-lineato; abdomine rufo, 

 segmento secundo macula magna utrinque laterale, reliquis 

 rnargine postice pallide llavescentibus. 



Nomada lateralis, Panz. Faun. Germ. 96. 20 J & 21 2 . 



Schclff'. Germ. Zeits. i. 227. 5. 



St. Fare/, EncycL Meth. viii. 370. 25. 



ScMff. Iccm. Ins. Ratisb. t. 50. f. 10. 



Smith, Zoo/, ii. 601. 16^ ?. 

 Nomada melanosoma, Schdff. Germ. Zeits. i. 280. lie?. 



Female. Length 3-4 lines.— Head and thorax black, the man- 

 dibles, labrum, clypeus and a minute spot above, a line encir- 

 clmg the eyes and the antennse, red, the latter have their scape 

 fuscous above, and are as long as the thorax. Thorax : the 

 collar, tubercles, a large patch on the breast, the teguk and 

 scutellum, red ; four obscure red lines on the disk of the thorax 

 rufous; the femora, tibiae and tarsi red; the femora more or 

 less black towards their base beneath, the posterior pair black 

 within, except at their apex; the coxae and trochanters red at 

 their apex. Abdomen rufous, the base black, the second seg- 

 ment having on each side a large subovate yellow macula, 

 pointed within, the third has a minute yellow^ macula, the 

 fourth a transverse subinterrupted fascia, the fifth a square 

 yellow patch ; beneath immaculate, or with the margins of the 

 segments slightly piceous. 



Male. 



Length 3i-4 



h lines. 



^ _ , —Head and thorax black, the labrum 



and clypeus clothed with a silvery-white pubescence; the cly- 

 peus anteriorly, the face on each side, and a narrow hne along 

 the inner margin of the eyes as high as the insertion of the 

 antennae, the labrum and mandibles, yellow, the latter ferru- 

 ginous at their tips ; the scape yellow in front, black behind ; 

 the flagellum rufous, three or four of the basal joints have a 

 dark stain above. Thorax : the disk has a thin clothing of 



) 



