658 EXTERNAL ANATOMY OF INSECTS. 
2. :: Similar to the preceding, but the anterior pair 
‘are distant from the two posterior; exemplified in the 
bees (Apis) and most Hymenoptera ; Chironomus ; Scu- 
tellera ; Pachysoma*. 
3. + Like the last, but the posterior pair is distant 
from the two anterior.—Ezamples : Silpha, Necrophorus, 
Telephorus, &c. 
4... Similar to the last, but the legs of the posterior 
pair are more distant from each other than the four an- 
terior.— Ez. The Rhyncophora. 
5. +: The legs of each pair near each other, but the 
pairs distant.—Ex. Gibbium. 
6. : + Both the legs of each pair and the pairs distant. 
—Ex. Blaps, &c. 
7... Anterior pair distant from the two posterior, 
and the legs of the middle pair rather more distant 
from each other than those of the other pairs.—Ez. Sca- 
rabeus. 
8. 1 1 Like the preceding, only the legs of the mid- 
dle pair are at a much greater distance from each other. 
—Lz. Copris. 
9. +: Legs of the two posterior pairs distant.—Zz. 
Hister, Scaphidium. 
10. -"- Like the preceding, but the posterior legs 
more distant than those of the middle pair.— Liz. Lygeus. 
11. - . Like the last, but the legs of the anterior 
pair also distant.—£z. Velia. 
12. .: The arms distant, intermediate legs more di- 
stant, posterior legs close together.— Hx. Byrrhus L. 
5. Proportions. In general the legs of some insects 
4 Jt is by this arrangement of the legs that Pachysoma is princi- 
pally distinguished, as a subgenus, from Scarabeus. 
