2. NOMADA. 131 



Lucas, Expl. Sc. Alg&r. hi. 218. 



Smith, Zool. ii. 593; Bees Great Brit. 141. 



Sclienck, A T ass. Bien. 180. 



Thorns. Opusc. Eat. 79; Ilym. Scand. ii. 182. 

 Apis schtcii'erella, Kirby, Mon. Apum Anal. ii. 199 £ • 

 Apis connexa, Kirby, lib. cit. 199 <$ . 



Female. Length lines. — Black ; the anterior angles of the face, 

 the margin of the clypeus, the lahrura, and mandibles yellow; the 

 antennae ferruginous, the scape more or less black behind. Thorax — 

 the tubercles, tegulte, and two spots on the scutellum yellow ; the 

 disk slightly and the metathorax more densely covered with pale 

 fulvous pubescence ; wings subhyaline, the apical margins having 

 a fuscous cloud, the nervures ferruginous ; the legs ferruginous, 

 the tibiae yellowish towards their base, the coxae and trochanters 

 black. Abdomen — the three basal segments having on each side a 

 yellow spot, those on the second and third segments pointed within ; 

 the fourth and fifth have interrupted fasciae ; beneath, the third and 

 fourth segments have a transverse yellow dash. B.M. 



Male. Length 6 lines. — Closely resembling the other sex, but having 

 those parts of the mouth yellow which are ferruginous in the 

 female ; the scape yellow in front, black behind, and five or six of 

 the basal joints of the flagellum black above. Thorax thinly 

 clothed above with hoary pubescence, beneath more densely so, the 

 legs yellow, and having in parts faint ferruginous stains ; the femora 

 beneath more or less black, the posterior pair black within. Abdo- 

 men variegated with yellow fasciae as in the other sex, but the 

 fasciae not quite so widely interrupted. B.M. 



Var. j3. The basal segment of the abdomen immaculate. 



This insect appears about the middle of May, and is always found 

 where colonies of Eucera longicornis exist. It was formerly very 

 abundant about Highgate Archway, but is now scarce near London, 

 a colony of Eucera having been destroyed and the ground built 

 upon : it is found at Southgate, and very abundant below South- 

 end. It has not been received from the north of England or from 

 Ireland. 



22. Nomada alternata. 



N. atra, antennis tegulisque ferrugineis, scutelli punctis abdominis- 

 que fasciis flavis, tribus anticis interrupts. 



Nomada alternata, Smith, Bees Great Brit. 140. 

 Apis alternata, Kirby, Mon. Ap. Angl. ii. 182 J . 

 Apis marshamella, Kirby, lib. cit. 188 $ . 

 Nomada marshamella, Schaff. Germ. Zeits. i. 285, 



Smith, Zool. ii. 590 J 2 • 



Schenck, Kass. Bien. 175. 



Thorns. Hym. Scand, ii. 176. 



Female. Length 4-5 lines. — Black ; the anterior margin of the cly- 



k2 



