ORISMOLOGY. 2?1 



and narrowing gradually downwards. PLATE X. 

 FIG. 11. 



16. AciNA.cic\TiE.(Acinacicata). Falchion-shaped. Curv- 



ed with the apex truncate, and growing gradually 

 wider towards the end. Ex. Abdomen of Ophio?i, 

 Fcenus, and other Iclmeumonidae \ 



17. LUNULATE (Lunulata). Crescent-shaped. Curved 



with both ends acute, like the moon in her first 

 quarter. Ex. Last joint of the labial palpi of 

 Oxyporus. PLATE XIII. FIG. 4. a. 



18. FALCATE (Falcata). Sickle-shaped. Curved with 



the apex acute. Ex. Ovipositor of Acrida varia. 

 Antenna of Atractocerus. PLATE XI. FIG. 8. 

 19 LINEAR (Linearis). Narrow and of the same width 

 throughout. Ex. Wings of Pterophorus monodac- 

 tylus. 



20. ARCUATE (Arcuata). Linear and bent like a bow. 



Ex. Hostrum of Balaninus Nucum. PLATE 

 XIII. FIG. 12. 



21. CULTRATE (Cidtrata). Coulter-shaped. Straight on 



one side and curved on the other. Ex. Ovipositor 

 of some Saw-flies. Under-whig of many Ich- 

 neumonidce. 



22. SPATULATE (Spatulata}. Spatula-shaped. Broader 



and rounded at the apex, linear and narrow at 

 the base. Ex. Abdomen of Ichneumon amictorius 

 Panz. 



23. CLEPSYDRATE (Clepsydrata}. Hour-glass-shaped. 



a The term falcate has usually been applied to signify this figure, 

 as well as that to which we have restricted it; but as the truncate 

 and sharp extremity forms a striking difference, we thought it best 

 to invent a new term. 



