2. NOMADA. 127 



Male. — Yery similar to the other sex, but differs in having a more 

 dense silvery pubescence on the face, the sides of the thorax, and 

 also on the sides of the abdomen, and in having the scutellum 

 black ; two or three of the basal joints of the flagellum are swollen 

 and thicker than the apical joints. • B.M. 



This species is parasitic upon Andrena fulvescens, and sparingly 

 found in the London district. At Hawley, near Blackwater, it was 

 found in immense numbers, frequenting a large colony of the A. 

 fulvescens ; it is also plentiful at Bournemouth. 



Although XT. atrata has been taken at Arundel, and one or 

 two at Kingsdown, near Deal, unaccompanied by other normal 

 examples of N. germanica, I believe it is a rare and remarkable 

 variety of the male of that species. It has also been taken at Red 

 Hill, near Reigate. 



18. Nomada solidaginis. 



N. atra, antennis basi ferrugineis; scutello abdominisque maculis 

 fasciisque flavis, segmento primo immaculato. 



Nomada solidaginis, Panz. Faun. Germ. 72. 21 $ . 



Spin. Ins. Liyur. i. 152. 



Schtiff. Germ. Zeits. i. 284. 



St.-Farg. Hym. ii. 472. 



Smith, Zool. ii. 595 ; Bees Great Brit. 136. 



Nyland. Notis. ur Stilish, pro Faun, et Flo. Fenn. i. 176. 



Schenck, Nass. Bien. 183. 



Thorns. Opusc. Fnt. 93 ; Hym. Scand. ii. 172. 

 Apis soladiginis, Kirby, Mon. Apum Anyl. ii. 204, 

 Apis picta, Kirby, lib. cit. 206 var. 

 Apis rufopicta, Kirby, lib. cit. 207 var. 



Female. Length 2-^-4 lines.- — Head and thorax black ; the clypeus 

 and a narrow line on each side touching the eyes, the labrum, and 

 mandibles yellow, the tips of the latter ferruginous; the scape and 

 the base of the flagellum ferruginous in front. Thorax — the collar, 

 tubercles, a Innate patch on the breast, the tegulae, and scutellum 

 yellow ; the legs ferruginous, the posterior femora having a dark 

 stain at their base within ; the wings fulvo -hyaline, faintly clouded 

 at their apical margins. Abdomen : the second and third segments 

 have a large yellow macula, acute within ; the fourth has a fascia 

 and the fifth segment is entirely of the same colour • the base of 

 the latter sometimes black ; the intermediate segments beneath have 

 transverse yellow fasciae, sometimes interrupted. B.M. 



Var. (3, Abdomen rufous, similarly maculated to the former (A. rufo- 

 picta, Kirby). 



Yar. y. Abdomen rufous, the fascia on the fourth segment widely 

 interrupted (A. picta, Kirby). 



Male. Length 2|-4 lines. — Black ; the clypeus, sides of the face, 

 the labrum, mandibles, and the scape in front yellow ; the face has 

 a silvery white pubescence ; the flagellum rufo-testaceous beneath, 



