HYMENOPTERA. 219 



thiglis are inflated, and several little tubercles arc observable on the 

 vertex *. 



XoRiDEs, Lat. — PiMPLA, Cryptus, Fab., 

 Wliere the methorax is convex and rounded at its descent, so that the 

 abdomen is inserted, as usual, at its inferior extremity, and presents a 

 very distinct pedicle f. 



Of those species in which tlie head is transverse, and the mandibles 

 are very distinctly bifid or well emarginated at the point, some, such 

 as form the 



PiMPLA, Fab., 



Have a cylindrical and very briefly pediculated abdomen. We will 

 cite the 



P. persuasoria ; Ichneumon per suas or ms,'L.; Panz., Faun. 

 Insect. Germ., xix, 18. One of the largest species in Europe; 

 black ; spots on the thorax and the scutellum white ; two white 

 dots on each ring of the abdomen ; legs fulvous ; ovipositor as 

 long as the body. 



P. manifestator ; Ichneuinon inanifestator, L. ; Panz., Ibid., 

 xix, 21. Black; scutellum of the same colour; legs fulvous. 

 The 



P. ovivora. Bullet. Univers. des Sc, of the Baron Ferussac 

 destroys the eggs of Spiders |. 

 In others, the abdomen almost borders on an oval, and has an elon- 

 gated, slender, and arcuated pedicle. They form the 



Cryptus, Fab, 

 Some species are known in which the females are apterous, and 

 which by reason of this cliaracter and the form of the thorax, that is 

 divided into two parts or knots, might constitute a separate subgenus. 

 They are almost always found on the ground §. 



There, the oviiwsitor of the females is concealed or but slightly 

 prolonged beyond the anus. 



Sometimes the abdomen is compressed and falciform, or clavate 

 and truncated. 



Ophion, Fab., 

 Where the antennae are filiform or setaceous, and where the abdo- 

 men is falciform and truncated at the extremity. The ovipositor is 

 somewhat salient. The second cubical cell is very small or null. 



O. lufeiis ; Ichneumon lufeus, L. ; Scheeff., Icon. Insect., 

 I, 10. Russet-yellow, Avitli green eyes. 



The female deposits her ova on the skin of certain caterpil- 

 lars, particularly on that called in France the queue- four c hue — 



* Lat., Gener. Crust, et Insect., IX, 3 ; Bracon sen-ator, Vdib.; — Pimpla coro- 

 tuitur, Fab., and some other undescribed species from America. 



f Lat., Gener. Crust, et Insect., IX, 4. The Pimpla mediator, necator, and 

 meliorator, Fab., are probably Xorides ; his Cryptus rusputor should apparently form 

 a seperate subgenus, allied to the preceding? one. 



X Fab., Syst. Piez. ; and Eucyc. M<5lhod,, article Pimple. 



§ Fab., Ibid. 



q2 



