British Hymenoptera. 261 



hairs ; tarsi piceous at the apex ; calcaria pale. Length 

 11 — 12 mm. 



Hah. Eare. Southwold, Lowestoft, Norwich, Deal, 

 Bournemouth, Ilfracombe, &c. 



28. Andrena sivullima, Smith. 



Smith, List of Brit. Anim. Coll. B. M., pt. vi., App., 

 p. 122 ; Cat. Brit. Hym., 2nd ed., p. 50. 



" ^ . Black ; the face clothed with pale pubescence ; 

 that on the clypeus anteriorly is white, its anterior 

 margin emarginate, the lateral angles produced into 

 sharp teeth ; the labrum bidentate. Mandibles forcipate, 

 their tips ferruginous. Antennse not quite as long as. the 

 thorax. Thorax clothed above thinly with fulvous 

 pubescence, beneath it is white. Wings as in ? . Abdo- 

 men ovate-lanceolate, the segments thinly fringed with 

 pale pubescence ; the apex fulvous." 



I do not know the <? , so have copied F, Smith's 

 description. 



? . Very like nigriceps, but rather smaller, the face 

 and under side clothed with pale fulvous hairs, and the 

 3rd and 4th segments of the abdomen without such deep 

 black hairs on their basal half. Legs clothed with paler 

 hairs than in that species. From puhescens it differs at 

 once by the simple impunctate apical dorsal valve, and 

 the deep black suberect pubescence of the 5th segment. 

 Length 9 — 10 mm. 



Hah. Eare. Kingsdown, near Deal ; Isle of Wight, 

 Bournemouth, &c. 



29. Andrena denticulata, Kirby. 



Kirby, Mon. Ap. Angi. ii., p. 138 : Smith, Cat. Brit. 

 Hym., 2nd ed., p. 53 = ListereUa, Kirby. 



Black. Face clothed with pale brownish white hairs. 

 Mandibles of ^ long and falcate. Thorax in both sexes 

 sparingly clothed on the disk with black-brown hairs, 

 and with pale hairs at the sides. Segments of the 

 abdomen with pale apical bands. Scop^ of 5 red- 

 dish brown. Wings somewhat dusky, especially at the 

 apex. 



(? . Head wider than the thorax ; face clothed with 



