62 Mv2')lanatio7i of Plates. 



bh dimidialus gena <6h lifjatns head 



IM) cecrups ,, 8c canpicvs ,, 



lb halteatus ,, 96 eatoni „ 



76 hylseiformis ,, 106 clwhanti „ 



86 caspiciis ,, 



Explanation of Plate VII, 



(Cliar;icter.s of Colletes ,j ,^ .) 



Explanation of Plate VIII. 



(Characters of Colletes (^ (^ .) 



