8. OsumBrate (Obumbratum).. When it is:oversha- 
ORISMOLOGY. 35k 
dowed by the trunk and concealed under it. Ex. 
The Cancriform Spiders. Prare XV. Fie. 10. 
9. Sattratorious (Saltatorium). When the ventral 
10. 
segments or the anus are furnished: with elastic 
processes which enable the animal to leap; Ex. 
Machilis, Podura. Puate XV. Fie. 14 
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 Agrion, and Dytiscus. 
i. CAUDA. 
1, Uncrnate (Uncinata). When the tail is inflected 
25; 
ae 
towed! 
so as to form a kind of hook. Ex. Dolichopus 3. 
Apuncous (Adunca). When it is crooked. Ex. 
Chelostoma maxillosa 8. (Apis **. c. 2. y. K.). 
Distinct (Distincta). When it is distinct from the 
abdomen. Ex. Scorpio. 
CuHELIFEROUs (Chelifera). When it is terminated 
by a very thick forceps somewhat resembling a 
lobster’s claw. Ex. Panorpa 3. PuatEe XV. Fic. 
12. 
PapiILLIFEROUS (Papillifera). When at the last 
segment but one the tail exerts two soft fleshy or- 
gans, which secrete a milky fluid and yield a power- 
ful scent. Ex. Staphylinus. 
ii, OVIPOSITOR. 
Ensate (Ensatus). When it is long, compressed, 
and shaped like a sword. Ex. Acrida K. 
