360 ORISMOLOGY. 
8. Obumbrate (Obumbratum). When it is oversha- 
dowed by the trunk and concealed under it. — Ex. 
Carkinodes. Plate XV. Fig. 10. 
9. Saltatorious {Saltatorium). When the ventral 
segments or the anus are furnished with elastic 
processes which enable the animal to leap. — Ex. 
Machilis, Podura. Plate XV. Fig. 14. 
10. Natatorious {Natatorium). When the abdomen is 
terminated by flat foliaceous appendages, or the 
tail is ciliated on each side with dense parallel 
hairs, which assist the insect in swimming. — Ex. 
Larva of Agrioti, and Dytiscus. 
i. CAUDA. 
1. Uncinate (Uncinata). When the tail is inflected 
so as to form a kind of hook. — Ex. Dolichopus <$ . 
2. Aduncous {Adunca). When it is crooked. — Ex. 
Chelostoma maxillosaS. (Apis** c. 2. y. K.) 
3. Distinct (Distincta). When it is distinct from the 
abdomen. — Ex. Scorpio. 
4. Cheliferous (Chelifera). When it is terminated 
by a very thick forceps somewhat resembling 
a lobster's claw. — Ex. Panorpa^. Plate XV. 
Fig. 12. 
5. Papuliferous (Papillifera). When at the last 
segment but one the tail exerts two soft fleshy 
organs, which secrete a milky fluid and yield a 
powerful scent. — Ex. Staphylinus. 
ii. OVIPOSITOR. 
1. Ensate (Ensatus). When it is long, compressed, 
and shaped like a sword. — Ex. Acrida. 
