ORISMOLOGY. 361 
2. Navicular (Navicularis). When it is shaped like 
a boat. — Ex. Cicada, Scaphura. 
3. Telescopiform (Telescopiformis). When it con- 
sists of several tubes retractile within each other 
like the pieces of a telescope. Plate XVI. Fig. 
2, 3. 
4. Aculeiform {Aculeiformis). The ovipositors of 
Hymenopterous insects, which consist of the same 
parts, with the exception of the poison-bag (Iote- 
rium\ whether used as weapons or merely in ovi- 
position. 
a. Exerted (Exertus). When the vagina unemployed 
is partly out of the body. — Ex. Cleptes. 
b. Extricated (Extricatus). When the valves and 
vagina unemployed are wholly out of the body. — 
Ex. Pimpla. Plate XVI. Fig. 1. 
c. Reflexed (Reflexus). When the ovipositor is turned 
up and lies upon the back of the abdomen. — Ex. 
Leucospis. 
APPENDIX. 
Terms particularly applicable to Larvae and Pufm. 
LARViE. 
1. Spinneret {Fusulus). The organ which spins the 
silk. Plate XXI. Fig. 9. 
2. Forcipate Lip {Labium Forcipatum). Mask of 
larvae and pupae of Libellulina a . Plate XVI. 
Fig. 5. a. 
a Vol. III. p. 125—. 
