186 MESSRS. C. HOENE AND E. SMITH ON HYMENOPTEEA 



APPENDIX. 



[Seventeen new species are herein described: seven belong to the Fossorial Group of 

 Hymenoptera, five belong to the Family Vespid^, and five to the Apid^ 



The habits of eight species are more or less detaQed m the Notes by Mr. Home. 

 The economy of the genera Pison and Paraj>ison is for the first time made known; 

 and considerable addition is made to our previous knowledge of the habits of several 

 other genera, particularly of the species of Pemphredm. and also of the social Apidse. 

 Very little has been previously published on the habits of Indian Hymenoptera derived 



from actual observation. i t, • • i 



The type specimens have been liberally presented by Mr. Home to the Bntish 



Museum. — F, SJ] 



Fam. POMPILID^. 



1. POMPILUS MACUUPES. 



Female. Length Splines. Black, and thinly covered with cinereous pile; a white 

 spot on the posterior tibise near their base. 



Head— the clypeus and cheeks bright and silvery in certain lights; the anterior 

 margin of the former rounded; the tips of the mandibles ferruginous. The coxbb 

 beneath and the sides of the metathorax silvery bright, the latter rounded, smooth, and 

 shining ; the wings hyaline, the nervures black, with a fuscous cloud occupying the 

 marginal cell and crossing the wing down to the posterior margin of the third discoidal 

 cell. Abdomen smooth, shining, and pilose. 



Hab, Mainpuri, North-west Provinces of India. 



2. Agenia mutabiljs. 



Female. Length 3^ lines. Black, and covered with a fine changeable silky silvery pile. 



Head covered with silvery pile, which is most dense and bright on the cheeks and 

 clypeus, the anterior margin of the latter rounded ; the palpi testaceous, the apical joints 

 palest. Thorax silvery, most bright and dense on the coxse ; metathorax rounded pos- 

 teriorly, with a deep fossulet in the middle of its base, down the centre runs a marked 

 or defined channel ; the wings hyaline, the nervures black ; the posterior femora bright 

 ferruginous. Abdomen covered with a beautiful changeable silvery pile, its brilliancy 

 changing in every fresh position, the apical segment very smooth and shining. 



Hab. Mainpuri, North-west Provinces of India. 



