m 
INTRODUCTION TO ENTOMOLOGY. 
them further than that of juxta-position, will fall 
under our notice afterwards. 
Explanation of Plato Is/. — Fig. 1. Head of Mylabris, upper 
side : — a, forehead ; 5, vertex ; c, occiput ; d, d , temples ; 
e , e, eyes ; f\ torulus, cavity for the insertion of the 
antennae; < 7 , clypeus, (of Fabr.) nose, (of Kirby,) 
Epistome of Latreille ; A, labrum. 
Fig. 2. Under side of same head : — posterior orifice ; /, the 
neck ; m, the men turn ; o, the eyes ; p. mandibles ; 
s, labial palpi. 
Figs. 3, 4, 5. Forms of the Labrum : — Fig. 6 . Mandible of 
Hydrous piceus ; Fig. 7. Do. of Goerius ; Fig. 8 . Do. of 
Calosoma sycophanta. 
Fig. 9. Maxilla of Necrophorus germanicus : — a, maxillary pal- 
pus ; 6 , external lobe of the maxilla ; c, internal lobe. 
Fig. 10. Maxilla of Cicindela : — a, external maxillary palpus; 
6 , internal do. or exterior lobe of the maxilla; c, inte- 
rior lobe, with an articulated hook at the apex, d. 
Fig. 11. Maxilla of Hydrous piceus: — a, insertion or hinge; 
6 , dorsal piece ; squame palpifere of Strauss ; b , c, d, 
taken together form the stalk, (stipes;) e, external lobe; 
f internal do. 
Fig. 12. Labium of Ci/chrus rostratus : — a, mentum ; 6 , ligula ; 
0 , c, labial palpi. 
Fig. 13. Labium of Cardbus , inside: — a, mentum; 5, lingua; 
c. paraglossae. 
Fig. 14. Thorax of Scolia Jlavifrons , upper side, the red colour 
indicating the prothorax, blue the mesothorax, and 
yellow the inetathorax ; coxae, green : — A, the prono- 
tum ; C, the mesonotum ; d, d, patagia; c, scutellum ; 
F, the inetanotum ; H, H, the parapleura. 
Fig. 15. Side view of the same : — E, mesostemum ; B, proster- 
num ; G, metasternum ; d, patagium ; c, scutellum ; 
a, first spiracle ; 0 , second do. Fig. 16. The same from 
beneath : — B, B, prostemum ; E, E, mesostemum ; 
G, G, metastcraum. 
Fig. 17. Thorax of Cicada Fraxini : — A, pronotum; C, meso- 
notum ; c, scutellum ; d, d, frenum ; F, F, metanotum. 
Fig. 18. Hinder leg of Melolonfha vulgaris: — a, 5, coxa; d. 
trochanter ; c, thigh ; f tibia ; A, tarsus ; t, claws. 
. Fig. 19. Pectinated claws. Fig. 20. Claws of an A situs : — 
o , central filaments ; s , s, membranous expansion of the 
terminal joint advanced beneath the claws. 
