BEES OP GREAT BRITAIN. 139 



apical margins clouded, the nervures ferruginous. Abdomen : 

 the basal segment having a ferruginous fascia, the second a 

 large yellow macula on each side, acute within, the third a 

 narrower macula, the fourth a transverse fascia, the fifth, ex- 

 cept its extreme base, yellow ; beneath, ferruginous, the apical 

 margins of the segments black, the fourth having a central 

 yellow spot, sometimes the third and fourth also. B.M. 



Var. /3. The basal segment of the abdomen having two ferru- 

 ginous spots. 



Var. y. The anterior margin of the ferruginous line on the basal 

 segment yellow ; beneath variegated with yellow. 



Var. 8. The ferruginous fascia having two yellow spots. 



Var. e. The ferruginous fascia having a transverse subinterrupted 

 yellow line. 



Var. f. The tegulae more or less ferruginous, the red fascia 

 obscure, and having two black dots. 



Male. Length 4-5 lines. Black ; the face has a silvery- 

 white pubescence, that on the vertex and disk of the thorax 

 pale fulvous ; the scape in front, the anterior margin of the 

 clypeus, the labrum and mandibles, yellow ; the flagellum fer- 

 ruginous, three or four of the basal joints fuscous above. 

 Thorax : the tubercles and tegulae, also sometimes two minute 

 dots on the scutellum, yellow ; beneath, as well as the coxae 

 and femora covered with a hoary pubescence; the femora, 

 tibiae and tarsi ferruginous, the former black at their base be- 

 neath, and the posterior pair also black within; wings as in 

 the other sex. Abdomen : the three basal segments having 

 interrupted yellow fasciae, the three apical fasciae uninterrupted, 

 the seventh segment, yellow ; the fascia on the fourth segment 

 attenuated in the middle : the three basal segments have the 

 lateral yellow stripes more or less pointed within ; beneath, the 

 segments have transverse broad yellow stripes. B.M. 



Var. /3. The apical margin of the basal segment of the abdomen 

 ferruginous, and having two yellow spots. 



The female varies greatly in the distribution of the colouring 

 of the abdomen. The varieties include four of Mr. Kirby's 

 species : nothing but an extensive series could justify any one in 

 thus reducing the species, but the insect having been plentiful 

 for some years on Hampstead Heath, the above varieties have 

 been obtained. The male seldom varies : Var. /3. is very rare. 

 The male is apt to be confounded with that of IV. alternata, and 

 it is indeed difficult at first to separate them : the male of IV. 

 lineola has its legs variegated with yellow, its tegulae sulphur- 

 yellow, while its antennae are rather thicker and fuscous towar ds 



