CTENOPLECTRA. 57 



of each, occupying about one third of the width of the segments ; 

 the two apical segments with black pubescence ; the base of the 

 abdomen with a little white pubescence. 



Hab. Burghcrsdorp, South Africa. 



The insect described had evidently been some time exposed at the 

 time it was captured ; therefore the white pubescence would x^robably 

 be yellowish white in recent specimens. 



22. Andrena fausta. 



Female. Length 4 lines. — Head and thorax black, abdomen ferru- 

 ginous. Head and thorax above closely punctured ; the face and 

 cheeks with a little white pubescence, on the thorax it is whitish 

 and sparing ; the wings fusco-hyaline, and iridescent towards the 

 apex ; the pubescence on the legs pale and of a glittering bright- 

 ness ; the claw-joint of the tarsi ferruginous. Abdomen with the 

 first segment closely punctured and black at the base ; beneath the 

 segments arc thinly fringed with pale fulvous pubescence. 



Hah. Natal. 



23. Andrena neglecta. 



Female. Length 4^ lines.— Black, with hoary pubescence ; the apical 

 margins of the segments of the abdomen testaceous, and thinly 

 covered with white pubescence. The face with short pale pubes- 

 cence, that on the vertex fuscous. The thorax closely punctured, 

 the pubescence short and thin above ; the wings subhyaline, faintly 

 clouded and iridescent at their apical margins, the nervures testa- 

 ceous, the stigma and costal nervure black ; legs obscurely rufo- 

 piceous ; the scopa on the posterior tibiae pale fulvoiia. Abdomen 

 shining, the apex with rufo-fuseous pubescence. 



Hah. Natal. 



CTENOPLECTRA, Smith. 



1. Ctenoplectra apicalis. 



Male. Length 6| lines. — Head and thorax black, abdomen blue. 

 Head closely punctured, semiopaque : the face and checks with a 

 short white downy pile ; the clypeus with a longitudinal central 

 shining carina ; antennae rufo-piceous. Thorax wider than the head, 

 rotundate, shining above, and finely punctured, the sides with fus- 

 cous pubescence ; wings fulvo-hyaline, the nci-vures black ; legs 

 dark rufo-piceous, palest beneath ; the tarsi and posterior tibiae 

 fringed with black pubescence. Abdomen bright shining steel- 

 blue, finely punctured, the apical margins of the segments impunc- 

 tate, on the two basal segments most broadly so ; the apical seg- 

 ment transverse, wider than the sixth, produced laterally into a 



