a I O Re v, Mr. K i R B y V Definition of the Ammophlta, 



Fig. 5. A maxilla, (a) The inner tooth, generally acute, (b) The 

 intermediate one, truncated, (c) The exterior one, acu- 

 minated. This acumen, eroding that of the other max- 

 illa, forms the forceps. 



Fig. 6. The antennae, confiding of thirteen joints, (a) The firft joint. 

 (b) The fecond. (c) The third. 



Fig. 7. (a) The neck, (b) The back part of the head, (c) The fore 

 part of the thorax. 



Fig. 8'. A hind leg. (a) The apophyfis, confifting of two joints, 

 (b) The thigh, (c) The tibia, (d) The tarfus, confift- 

 ing of five joints. 



Fig. 9. The firft joint of the tarfus. (a) The peclen at its bafe. 



Fig. 10. The interior peainated fpine at the apex of the pofterior 

 tibia. 



No. II. 

 The roftrum and maxilla of a Sphex magnified. 



Fig. I. The outfide of one of the upper valves, fhort and rounded, 

 and hairy at the top. (a) Its feeler of fix joints, the inter- 

 mediate ones the largeft. 



Fig. 2. The under-fide of the roftrum. (a) The infide of the upper 

 valve, (b) Its feeler, (c) The under valve, (d d) Its 

 minute arifte. (e) Its feeler, of four joints, (f ) The 

 tongue, ihort and dilated at the apex. 



Fig. 3. The upper fide of the tongue, on which it appears rather 

 emarginate. 



Fig. 4* A maxilla. 



Fig. 5. The infide of a maxilla,.to fhew the two obfolete teeth at the 

 apex (a). 



No. III.. 



