ORISMOLOGY. 307 
constricted behind into a distinct neck. Ex. Apo- 
derus Coryli, &c. 
11. SEssiLE (Sessile). When the head does not move 
in the socket of the trunk, but is attached to it by 
a kind of ligament. Ex. Hymenoptera, Diptera. 
ili, TERMINATION. 
1. CiypeaTE (Clypeatum). When the Nasus, Gene, 
&c. are dilated so as to shelter and overshadow 
the mouth. Ex. Scarabeus M‘L. Copris, &c. 
Pirate XIII. Fic. 14. 
2. CapistratE (Capistratum). When the anterior 
part of the head is attenuated and subelongated 
into a kind of flat rostrum or muzzle. Ex. Niti- 
dula. PuatTe XIII. Fre. 13. 
3. Rostrate (Rostratum). When the anterior part 
of the head is elongated and attenuated into a cy- 
lindrical or many-sided rostrum or beak. Ex. Cur- 
culio L. Puare XIII. Fie. 12. 
4. BuccatEe (Buccatum). When the Nasus and ante- 
rior part of the head are inflated. Ex. Conops and 
other Diptera. Puiate XIII. Fie. 16. 
iv. APPENDAGES. 
1. UmBracutaTe (Umbraculatum). When there is 
upon the head an umbrella-shaped process. Ex. 
Acheta umbraculata. 
2. Lycunipiate (Lychnidiatum). When the Vertea, 
Frons, and Postnasus are porrected so as to form a 
kind of rostrum which gives light in the night. 
Ex. Fulgora. Piate XIII, Fie. 15. 
x 2 
