4. ANDRENA. 63 



sex, and having a pale fulvous fringe on the apical margins of the 

 segments, frequently obliterated on the first, and usually interrupted 

 on the two following: the extreme apex fulvous. B.M. 



This species usually appears towards the end of May, and is not 

 scarce round London. I believe it to be local ; but it is found occa- 

 sionally forming large colonies, of which there is one below Southend 

 facing the sea. It is found at and near Norwich, also near Bourne- 

 mouth, in the Isle of Wight, and at Eastbourne ; but I have not seen 

 it from the north of England. 



49. Andrena chrysoscelis. 



A. nigra, cinereo subpubescens ; abdomine nitido, fasciis interruptis 

 albis ; ano, tarsis tibiisque posticis testaceis. Mas clypeo pallide 

 flavo. 



Andrena chrysosceles, Smith, Zool. v. 1917 ; Bees Great Brit. 93. 



Nyland. Notts, ur SaUsk. pro Faun, et Flo. Fenn. ii. 257. 



Schenck, JYass. Bien. 254. 

 Melitta chrysosceles, Kirby, Mon. Ap. Angl. ii. 143 <$ 2 . 



Female. Length 4-4^ lines. — Black ; the face has a short glittering 

 whitish pubescence, the channels on each side of the face covered 

 with a fulvous pile, the apex of the flagellurn fulvo-piceous beneath. 

 Thorax : the disk has a very thin pale fulvous pubescence, and on 

 each side over the teguLe an abbreviated impressed line ; the wings 

 fulvo-hyaline, iridescent, the nervures and teguke pale rufo- testa- 

 ceous ; legs nigro-piceous, and having a pale pubescence ; all the 

 tarsi and the posterior tibia) fulvo-testaceous ; the floccus and fringe 

 of the femora white, the scopa of a pale golden yellow, very bright 

 and flittering. Abdomen subovate, subdepressed, shining, and 

 very delicately punctured ; the apical margins of the three inter- 

 mediate segments have a very narrow white marginal fringe ; the 

 first two usually interrupted ; the apical fimbria bright fulvous. 



B.M. 



Male. Length 34-4 lines. — Head rather wider than the thorax, the 

 clypeus pale yellow, and having on each side a minute black dot ; 

 the pubescence on the clypeus silvery white, above and on the vertex 

 very pale fulvous ; it is of the same colour on the disk of the thorax ; 

 wings and legs as in the other sex, the posterior tibia3 fuscous and 

 pale at the apex. Abdomen lanceolate, shining and delicately punc- 

 tured ; the margins of the segments obscurely rufo-piceous, the in- 

 termediate ones having laterally a short fringe of white pubescence, 

 the apex pale testaceous. B.M. 



This species appears in June, and is frequently found on the 

 flowers of Umbclliftra?. It is a local insect, but found occasionally 

 in many places near London, frequently at wood-sides. It is by no 

 means a common species. 



