OR1SMOLOGY. 321 



conical, and the base of the cones forms the point 

 of union. -Ex. Trechus. PLATE XXVI. FIG. 8. 

 14. HETEROMORPHOUS (Hcteromorphi}. When the two 

 intermediate joints are vastly larger than the first 

 and the last. Ex. Cerocoma $ . PLATE XXVI. 

 FIG. 2. 



e. TONGUE (Lingua}. 



1. LINGUIFORM (Lingutforms). When the tongue is 



quite distinct from , the labium, usually retracted 

 within the mouth, short and shaped something 

 like a vertebrate tongue. Ex. Gryllina^ Libellu- 

 lina. PLATE VI. FIG. 6, 12. e'. 



2. LIGULIFORM (Liguliformis). When it emerges 



from the labium, is short, flat, and not concealed 

 within the mouth. Ex. Vespa and many Hymeno- 

 ptera. PLATE VII. FIG. 2. e 7 . 



3. TUBULOSE ( Tubulosa}. When it emerges from the 



labium, is long and tubular, and capable of infla- 

 tion. Ex. Apis. PLATE VII. FIG. 3. e' 



4. SETIFORM (Setiformis). A short minute sharp tongue 



discoverable between the scalpella of a promuscis. 

 Ex. Cimex L. PLATE VII. FIG. 14. e' 



5. PALATIFORM (Palatiformis). When the tongue 



forms the inner surface of the Labium, but is not 

 separate from it. Ex. Most Coleoptera. 



vi. NOSE (&ASUS). 



1. INCLUDED (Inclusus). When the nose is included 



between the two sides of the Poslnasus which run 

 towards the upper lip. Ex. Geocoriscs. 



2. VAULTED (Fornicatus). When the nose is elevated, 



convex and hollow underneath. Ex. Vespa. 



VOL. IV. Y 



