British Hymenoptera. 211 



(? . Head and thorax closely punctured ; face clothed with pale 

 ochreous-yellow hairs ; antennae reaching to the tegulse, with the 

 3rd joint longer than the two following together. Thorax clothed 

 with long ochreous hairs ; wings slightly smoky ; metathoracic 

 area dull. Abdomen shining, finely punctured, the apical margins 

 of the segments very narrowly piceous, their sm-face clothed with 

 long pale ochreous hairs ; 7th segment sharply bidentate ; beneath 

 punctured, clothed with long ochreous hairs, margins of the seg- 

 ments testaceous ; 2nd segment rounded at the apex ; 3rd emargi- 

 nate ; 4th truncate, with a small discal pubescent tubercle ; 5th 

 truncate ; 6th shining, with a tuft of golden hairs on each side of 

 its apex (for genitalia see PI. VIII., fig. 14). Legs clothed with 

 pale hairs ; calcaria testaceous ; tarsi testaceous, except the basal 

 joint, and clothed with golden hairs. 



$ . Head and thorax densely clothed with black hau's. Antennae 

 with the Srd joint very long, as in the <? , being nearly as long as 

 the three following joints taken together. Abdomen densely 

 clothed with bright red hairs above and beneath, rather darker 

 towards the base. Legs clothed with black hairs on the femora, 

 with brownish hairs on the tibiae, and bright fulvous-red on the 

 tarsi, which are clear rufo-testaceous ; calcaria testaceous. Length, 

 10—12 mm. 



Hah. Purfleet, Northfleet, Eeigate, Bristol, Wotton- 

 Tinder-Edge, &c. Local, but not uncommon where it 

 occurs. 



9. Osmia leucomelana, Kirb. (PI. VIII., fig. 16). 



Kirb., Mon. Ap. Angl., ii., p. 260 ; Smith, Cat. Brit. 

 Hym., 2nd ed., p. 161. 



Deep black, shining ; ^ with the 7th segment pointed, deeply 

 foveated at the base ; 2nd segment beneath with a large transverse 

 tubercular plate ; 5 with the 1st to 4th segments with an apical 

 band of white hairs on each side. 



(J . Head and thorax finely punctured, clothed with ochreous- 

 grey hairs, those of the face below the antennae paler and very 

 dense. Antennae piceous beneath, not reaching to the tegulae. 

 Thorax dull ; wings very slightly smoky in colour ; nervures and 

 tegulas i)iceous. Abdomen incurved at the apex, somewhat shining, 

 punctured, clothed with a short gi-ey pubescence, forming indistinct 

 apical bands on the 2nd and following segments ; 6th segment with 

 an obtuse apical tooth on each side ; 7th pointed, with a large deep 

 round fovea at the base ; beneath with the 2nd segment elevated 

 into a large perpendicular tubercular plate, 3rd, 4th, and 5th 



