132 APID2E 



peus, the labrum, mandibles, and antennae ferruginous, Thorax — 

 the collar on each side, the tubercles, and two spots on the scutellum 

 yellow ; the tegulae and legs ferruginous ; the coxae and femora 

 towards their base black ; the wings subhyaline, their apical mar- 

 gins clouded, the nervures ferruginous. Abdomen — two minute 

 spots on the basal segments, an interrupted fascia on the two fol- 

 lowing, on the fourth an entire fascia, and on the fifth a large 

 quadrate spot yellow ; there is usually a minute spot on each side 

 of the quadrate one ; beneath, the third and fourth segments have 

 usually a yellow fascia, and the second sometimes two minute 

 yellow dots. B.M. 



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

 spots on the scutellum reddish yellow. 



Male. Length 3^-5 lines. — This sex very closely resembles the 

 fern ale, but has the scape in front, the anterior margin of the cly- 

 peus, the labrum, and mandibles yellow ; the face has also a 

 silvery- white pubescence ; the tubercles yellow ; the teguhe ferru- 

 ginous, sometimes dashed with yellow ; the wings and legs as in 

 the other sex ; the fasciae on the abdomen are broader, the first 

 three subinterrupted ; beneath, the second and three following seg- 

 ments have broad yellow fasciae, the first usually interrupted, the 

 apical segment yellow. B.M. 



Yar. /3. The basal segment of the abdomen immaculate. 



Var. y. Two minute spots on the scutellum. 



This species is found throughout the United Kingdom, and one of 

 the most abundant ; it appears early in the season, frequently in the 

 first week in April. One peculiarity is connected with it : during 

 a very fine autumn a few make their appearance. I have taken it 

 on the 10th and 15th of September on Shirley Common ; one or two 

 of the spring species of Andrenidae also appear in such seasons. This 

 Nomacla is parasitic on Andrena nigro-cenea and also on A. atri- 

 ceps ; I have also observed it in the burrows of Eucera longicornis. 

 Kirby does not appear to have found the species at Barham, or he 

 would probably have united the sexes. It will be observed that 

 continental authors adopt the name given by Kirby to the female ; 

 this is contrary to an almost general system adopted in other orders 

 of insects. The male is described as the fifth species, the female as 

 the tenth in the * Monographia Apum Angliae.' 



23. Nomada succincta 



N. atra, tegulis, tuberculis scutellique punctis duobus flavis, abdo- 

 mine fasciis flavis nigrisque alternis ornato. 



iSchaff. Germ. Zeits. i. 287. 



St.-Farg. Hym. ii. 469. 



Nyland. Notts, ur Siillsk. pro Faun, et Ho. Fenn. i. 175. 



Smith, Bees Great Brit. 142. 



