EXTERNAL ANATOMY OF INSECTS. 485 
In many Orthoptera also, as Locusta, one of them is be- 
low the antennee; and in the lanthorn-fly tribe (Fulgo- 
vide), both these organs, which are situate between them 
and the eyes, as they do also in Truzxalis, appear to be 
in it*. In this tribe the rostrum is an elongation of the 
part in question; and perhaps you would think at first 
that what I have considered as the nose in Cicada, was also 
a tendency to this kind of rostrum ; but if you examine 
the great lanthorn-fly (Fulgora laternaria), you will find 
besides, at the lower base of the lanthorn, a triangular 
piece analogous to the nose of the former insect, and be- 
low it another representing its nostril-piece :—the hori- 
zontal part of the nose in that genus may perhaps be re- 
garded as part of the front. In Truwzxalis the face con- 
sists of a supine and prone surface, and the latter is 
composed of the front, after-nose, nose, and organs of 
the mouth. I may notice here a most remarkable and 
singular tribe of bugs, of which two species have been 
figured by Stoll®: in these the head or rather those 
parts of it that we have now been describing, the nose, 
namely, the after-nose, and front, are absolutely divided 
longitudinally in two, each half having an eye and an- 
tenna planted in it; or perhaps, as it is stated to be di- 
vided in one instance to the commencement of the pro- 
muscis, the nose is left intire, and dips down, as in cases 
before alluded to: so that in this the nose appears to 
leave the lobes of the front, which in others embrace its 
sides. 
iv. Vertex*.—We now come to the vertex, or crown 
? Plate XXVI. Fic. 41. i. 
b Stoll Punaises, ¢. xxxix. f. 279, 280. 
“ Pirates VI. VII. X XVI. d. 
