360 ORISMOLOGY. 



8. OBUMBRATE (Obumbratum). When it is oversha- 



dowed by the trunk and concealed under it. Ex. 

 CarJcinodes. 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 (Natatoriwri). 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. UNCINATE (Uncinata}. When the tail is inflected 



so as to form a kind of hook. Ex. Dolichopus $ . 

 C 2. ADUNCOUS (Adunca). When it is crooked. Ex. 



Chelostoma maxillosag. (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. Panorpag. PLATE XV. 

 FIG. 12. 



5. PAPILLIFEROUS (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. 



