2. NOMADA. 123 



the third having sometimes a narrow line on each side at its basal 

 margin yellow; beneath, immaculate. B.M. 



This is the smallest species of the genus known ; Fabricius appears 

 to have thought himself justified in consequence in giving it a cha- 

 racteristic name, at the same time quoting Panzer's name, which 

 has the priority and must be retained. This little bee is parasitic 

 upon Halictus morio, and probably also upon H. minutus ; Mr. Gr. 

 Newport found numbers in the cells of one of the species of Colletes. 



13. Nomada fiavoguttata. 



iV. atra, antennis scutellique punctis duobus ferrugineis ; abdomine 

 rufo, segmentis duobus et tertii maculis lateralibus flavis. 



Nomada fiavoguttata, Smith, Zool. ii. 598 $ $ j Bees Great Brit. 128 



Schejick, Nass. Bien. 389. 

 Apis fiavoguttata, Kirby, Mon. Apum Angl. ii. 215 <$ . 



Female. Length 2^-3 lines. — Head and thorax black, the anterior 

 margin of the clypeus, the face on each side, the orbits of the eyes, 

 the labrum, mandibles, and flagelrum ferruginous, the latter fuscous 

 above. Thorax — the collar, tubercles, a spot beneath the wings, a 

 larger one on the breast, two on the scutellum, and the postscutellum 

 ferruginous ; two obscure ferruginous abbreviated lines on the disk ; 

 wings subhyaline, iridescent, and having a dark cloud at their apical 

 margins ; the coxae, trochanters, base of the anterior and inter- 

 mediate femora, and the posterior pair beneath black ; the tibiae, 

 tarsi, and femora above ferruginous. Abdomen ferruginous, the 

 base black ; the second and third segments have on each side a 

 round yellow macula, the second pair smallest ; the margins of the 

 segments rufo-piceous. B.M. 



Var. /3. The legs almost entirely ferruginous. 



Yar. y. The spots on the abdomen almost or entirely obliterated. 



Yar. I. The lines on the disk of the thorax obsolete. 



Yar. e. The spots on the scutellum united. 



Male. Length 2-2J lines. — The anterior margin of the clypeus and 

 the mandibles yellow, the latter ferruginous at their tips ; the an- 

 tennae ferruginous beneath, above black ; the face has a silvery 

 pubescence. Thorax black ; the tibiae, tarsi, and femora in front 

 ferruginous, the rest black ; the thorax has a hoary pubescence ; 

 wings clearer than in the other sex. Abdomen as in the female. 



B.M. 



Yar. j3. The posterior tibiae and tarsi fuscous above, and the inter- 

 mediate and anterior pairs stained behind. 



This distinct species is mixed up with Nomada furva by continen- 

 tal authors ; Nylander supposed the male described by Kirby to be 

 that of N. furva ; and subsequent authors have adopted this erroneous 

 opinion. The species is larger and perfectly distinct, is not rare, 

 and is widely distributed ; but I do not know upon what bee it is 



