1 52 STATES OF INSECTS. 



Two conical anal horns also distinguish the caterpillar 

 of one of the moths called Prominents, Notodonta ca- 

 melina; but these are not terminal, but on the back of 

 the last segment but one a . In that of another Bri- 

 tish moth, N. ziczac F., there are three dorsal promi- 

 nences, one near the anus, and two more in the middle b . 

 Some Geometers (G. fuliginosa, &c.) have two erect 

 horns on the eleventh segment, and others (G. syringaria, 

 &c.) two recurved ones on the eighth c . I must not here 

 omit to mention the curious hooks emerging from two tu- 

 bercles on the back of the eighth segment of the ferocious 

 larva of that beautiful tiger-beetle, the Cicindela campe- 

 stris L., not uncommon on warm sunny banks. This ani- 

 mal with incessant labour, as we are informed by M. Des- 

 marets, digs a cylindrical burrow, to the enormous depth, 

 the size of the animal considered, of eighteen inches. To 

 effect this, it carries out small masses of earth upon its large 

 concave head; and having often occasion to rest in ascend- 

 ing this height, by means of these hooks d it fixes itself 

 to the sides of its burrow, and, having finally arrived at its 

 mouth, casts off its burthen. When these insects lie in 

 wait for their prey, their head, probably in conjunction 

 with the first segment of the body, accurately stops the 

 mouth of the burrow, so as to form an exact level with 

 the surrounding soil ; and thus careless insects, walking 

 over it without perceiving the snare, are seized in a mo- 

 ment and devoured e . 



Another kind of appendage, which is found in some 



a Sepp. iv. t. 1./. 6—8. 



b Plate XIX. Fig. 5. a b. Sepp. iv. t. xii./. 4—7. 

 « Ros. iii. 69. -» Plate XVII. Fig. 13. v. 



* N, Diet. d'Hiii, Nat. vii. 95. 



