318 CIUSMOLOGY. 
b. upper jaws (Mandibidcc). 
1. Chelate (Chclata?). When the upper jaws are fur- 
nished at the end with a chela or thumb. — Ex. 
Scorpio, Phalangium. 
2. Unguiculate ( Unguiculata ). When they are 
armed with a moveable clww. — Ex. Arancidca. 
Plate VII. Fig. 10. c\ 
3. Buried (Sepulta?). When they are covered and 
quite concealed by the upper lip. — Ex. Colliuris. 
4*. Open (Apertce). When they are not quite concealed 
by the upper lip. — Ex. Most Colcoptcra. 
5. Toothless {Edentulcc). When they are not armed 
with teeth. — Ex. Apogonia gemcllata. Plate 
XXVI. Fig. 22. 
G. Toothed (Dentatce). When they are armed with 
teeth.— Ex. Cicindcla. Plate XXVI. Fig. 19. 
7. Suctorious (Suctoricc). When they have an ori- 
fice by which they imbibe their food. — Ex. Larva 
of Dytiscus, Myr?nelcon, &c, Plate XIII. Fig. 6. 
c. under jaws (Maxilla?). 
1. Simple (Simplices). When the under jaws have but 
one lobe. — Ex. Hymenoptcra. Plate VII. Fig. 2, 
3.d'. 
2. Compound {Composite^). When they have more 
than one lobe. — -Ex. Staphylinus and many other 
Coleoptera. Plate XXVI. Fig. 9, 10. d'". e'". 
3. Adnate {Adnata). When they adhere to the lower 
lip through their whole length. — Ex. Trichoptcra. 
Plate VII. Fig. 1. d'. 
4. Adherent {Adluzrentes). When they adhere to it 
