122 BEES OF GREAT BRITAIN. 



outside and pointed within, the third a minute angular spot at 

 the extreme lateral margin, the fourth a transverse interrupted 

 line, and the fifth a square macula, white ; beneath rufous. 



B.M. 



Male. Length 3 lines. Head and thorax black; the clypeus, 

 labrum, mandibles and scape in front, pale yellowish-white ; 

 the scape black behind ; the flagellum red, the joints having a 

 fuscous line above, darkest towards their base ; the head and 

 thorax above have a thin hoary pubescence ; on the thorax be- 

 neath it is shorter, but more dense ; two spots on the scutellum 

 and the tegulse rufo-testaceous ; the legs of a paler red than in 

 the other sex ; wings as in the female. Abdomen pale rufous, 

 the extreme base black ; two transverse white spots on the first 

 segment ; the second has two large spots as in the female, the 

 following segments have elongated white spots on each side, 

 those on the fifth uniting, the sixth has a square patch ; beneath, 

 a transverse white line on the third and fourth segments in the 

 middle, but frequently immaculate. 



I first had the pleasure of discovering this beautiful species near 

 Sandhurst some years ago ; it was parasitic on a new species of 

 Andrena, subsequently described as A. argentata : in 1843 the 

 latter was met with at Wey bridge, and the same parasite in- 

 fested its colony. Mr. Dale has met with the Andrena in Hamp- 

 shire, and one or two have been taken on Hawley Green, Hants. 



4. Nomada ochrostoma, 



N. atra ; labio, clypeo, facieique lateribus ferrugineis ; thorace 

 lineis tribus longitudinalibus atris, scutello rufo ; abdomine 

 flavo-maculato. Mas, scutello sanguineo, abdomine rufo, 

 fasciisque interruptis, flavis, variegato. 



Apis ochrostoma, Kirby, Mon. Ap. Anyl. ii. 209. 26 $ . 

 Nomada ochrostoma, Schdff. Germ. Zeits. i. 280. 13 $ . 



Smith, Zool. ii. 596. 9. 



Nyland. Ap. Boreal, p. 179. 9, 8f Revis. Ap. Boreal, p. 229. 4. 

 Apis Hillana, Kirby, Mon. Ap. Angl ii. 208. 25, $ var. 

 Nomada vidua, Smith, Zool. ii. 602. 18 ?. 



Female. Length 4-4| lines. Head and thorax black, the 

 labrum, mandibles, clypeus, orbits of the eyes, and a line 

 passing behind the ocelli, ferruginous ; the antennae ferrugi- 

 nous, above black. Thorax : the collar, tubercles, a large patch 

 beneath the wings, a smaller ovate spot on the breast beneath, 

 two longitudinal stripes on the disk of the thorax, an epaulet 



