316 OH1SMOL0GY. 
&c. are dilated so as to shelter and overshadow 
the mouth. — Ex. Scarabaus, Copris, &c. Plate 
XIII. Fig. 14. 
2. Capistrate ( Capistratum ). When the anterior 
part of the head is attenuated and subelongated 
into a kind of Jlat rostrum or muzzle. — Ex. Niti- 
dula. Plate XIII. Fig. 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. The 
weevils {Rhyncophora). Plate XIII. Fig. 12. 
4. Buccate (Buccatum). When the Nasus and ante- 
rior part of the head are inflated. — Ex. Conops and 
other Diptcra. Plate XIII. Fig. 16. 
iv. APPENDAGES. 
1. Umbraculate {Umbraculatum). When there is 
upon the head an umbrella-shaped process. — Ex. 
Gryllus umbraculatus. 
2. Lychnidiate {Lychnidiatum). When the Vertex, 
From, and Post?iasus are porrected so as to form a 
kind of rostrum which gives light in the night. — 
Ex. Fidnora. Plate XIII. Fig. 15. 
■©* 
v. MOUTH (Os). 
1. Terminal {Terminate). When the mouth termi- 
nates the head. — Ex. Colcoptcra, &c. 
2. Prone {Pronum). When the mouth is wholly un- 
der the head. — Ex. Truxalis, Proscopia. 
3. Perfect {Pctfeclum). When the mouth is furnished 
with all the Tropin. Viz. Labium ; Labium ,- 
