SPHEGIDJE. H7 



defined in both sexes, and bounded by two nearly parallel 

 cariufB, its surface very largely punctured in the $ , sub- 

 rugolose in the ? ; femora produced at the apes externally 

 into a broad blunt process, anterior tarsi pectinated, but the 

 pecten very short in the $ , tibisB epinose, posterior pair 

 constricted and bent at the base. A very extensive genus 

 extending over the whole globe, and of which there are 

 several hundred species. Only six occur with us. Their 

 habits are very curious, as their prey varies much, accord- 

 ing to the different species, and each seems to keep 

 exclusively to the species of some particular family or order. 

 C ornata almost always provisions its nest with Ilalicti, 

 although sometimes it takes an Andrena ; C. areimria 

 catches various Curculionidie. F. Smith has taken C. la- 

 hiata conveying specimens of Haltica falida and C. 

 iiittrrupta with Apion rvfiroslre. The nests of these insects 

 are formed in the ground and the larva spins a tough brown 

 cocoon. 



(4) 1. Second abdominal segment beneath with 

 a central semi-circular elevation at the 

 base. 



(3) 2. Basal area of propodenm shining . . oknata. 



(2) 3. Basal area of propodenm dull and deeply 



striated emabgi>-ata. 



(1) "1. Second abdominal segment simple be- 

 neath. 



(6) 5. Second abdominal segment almost entirely 



yello-W QUADRICINCTA. 



(6) G. Second abdominal segment at the base 



with a wide triangular black spot 



reaching to the middle of the segment, 



or black with two lateral spots. 

 (10) 7. ($ clypens tridentate ; ? with the centre 



of tbe clypeus entirely raised and free, 



or raised only at the apex, which is 



not deeply and semicircularly emar- 



ginate. 

 (9) 8. (J penultimate segment of abdomen with- 

 out a pencil of rigid seta3 at the apex 



laterally, clypeus in the ? slightly 



raised at the apex only .... aREiVakia. 

 (8) 9. cJ penultimate segment of abdomen with 



a pencil of rigid setfe at tln! apex 



literally, centre of the clyi cub in the 



