a new Genus of Infecs. 201 
Ocul: ovales. 
4le plane. 
Aculeus reconditus, 
Thefecharadters, I think, will fufficiently diftinguith our Ammophila 
from thofe genera to which it is moft nearly rel ated. The direc- 
tion of the roftrum in this genus, the form of the eyes, and the plane 
furface of the wings, clearly prove it, to be diftin@ from Vz ofpa. 
The bifid tongue, and the antenne filiform in every fex (4), feparate 
it from Apis. The direétion and length of the roftrum, and the 
bifid tongue, divide it from Sphex. The fame part in conjunétion 
with the number of articulations, and form of the antennz, prevent 
its being confounded with Ichneumon. 
Synopsis SPECIERUM. 
1. Vulgaris. A. antennis tredecim-nodiis, frontis fovea inferte ; 
abdominis petiolo elongato biarticulato, alis equali. 
2. Affinis. A. antennis tredecim-nodiis, frontis fovea inferte ; 
abdominis petiolo uniarticulato ; alis corpore brevioribus, 
3. Hirfuta. A. antennis tredecim-nodiis ; abdominis: petiolo 
uniarticulato jodygezih alis corpus ic imine 
4 Argentea. 9. \4 antennis ‘quatuordecith- nodiis; abdominis pe- 
tiolo uniarticulato ; alis yl pe spe ig be ©: 
(4) In Apis the antennz of the males are ‘alight, while thofe of the other fex are fub- 
clavate. Eat py r ~ 
(c) ‘This genus,as) fat as Tam acquainted with the pe thet compofe it, offers fy the 
Entomologift the fingular, felicity of forming a Diagnofis Specierum, from form, and the 
number and Proportion of parts, ° without the’ feat of having’ cea éither to pubef- 
cence, or célour, for that | purpofe, V9 12 ds 
ste mn va ! PHP} j ora 
AVou. IV. Dd aibonls oxi 'Y/°AMmo- 
