2. 1T0MADA. 127 



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

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

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

 black ; two or three of tbe basal joints of theflagellum are swollen 

 and thicker than the apical joints. B.M. 



This species is parasitic upon Andrena fulvegcens, and sparingly 

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

 found in immense numbers, freqiienting a large colony of tbe A. 

 fulvegcens ; it is also plentiful at Bournemouth. 



Although X. airatd has been taken at Arundel, and one or 

 two at Xingsdown, near Deal, unaccompanied by other normal 

 examples of A*, aermanica, I believe it is a rare and remarkable 

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

 Hill, near Keigate. 



18. Nomada solidaginis. 



A*, atra, antennis basi ferrugineis ; scutello abdominisque maculis 

 fasciisque flavis, segmeuto primo immaculato. 



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



Spin. Ins. Ligur. i. 152. 



Schaf. Germ. Zeits. i. 284. 



St.-Farg. Hym. ii. 472. 



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



Nyland. Notts, ur Sallsk. pro Faun, et Flo. Fenn. i. 176. 



Schenek, Nass. Bien. 183. 



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

 Apis solidaginis, Kirby, Mon. Apum Angl. 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 tbe latter ferruginous ; the scape and 

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

 tubercles, a lunate patch on the breast, the tegulas, and scutellum 

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

 stain at their base within : the wings fulvo-hj aline, 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 fascia?, sometimes interrupted. B.M. 



Yar. /3. Abdomen rufous, similarly maculated to the former {A. rufo- 

 picta, Kirby). 



Tar. 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 



