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ORISMOLOGY. 35% 
3. Uncuirorm Manprisyes (Mandibule unguiformes). 
The parallel claw-shaped mandibles of many D:- 
pera.” PUATE DONG HIG. 1, 2. 6. 
4. Prop (Zreisma). A bipartite retractile glutinous or- 
gan exerted from between the legs of the genus 
Sminthurus Latr., and employed by the animal 
to support itself when its legs fail it?. 
5. FecrrorK. (Facifurca). ‘Fhe anal fork on which 
the larva of Casside, &c. carry their feces. PLATE 
MVIGL. Pie: 27a: 
6. Masricia (Mastigia). ‘Two anal organs in the 
larvee of Cerura Vinula, exerting from their apex 
a retractile flexible thread, with which they en- 
deavour, by lashing their sides, to drive away the 
Ichneumons. Puare XIX. Fra, 2. a. 
7. SyRINGES (Syringia). Organs situated in various 
parts of larvee, from which they ejaculate a watery: 
fluid to annoy or drive away their enemies?. 
8. Rumutes (Rumile).  Téat-like fleshy protube- 
rances observable on the bodies of various larvee‘. 
9. ArRipuctTs (Aériductus). Respiratory organs often 
foliaceous, with which the sides of the abdomen, . 
the tail, and sometimes the trunk of aquatic larvee 
and pupee are often furnished. PLATE XXIX. 
Fic. 3—7. ey 
10. Proieas (Propedes). Fleshy exarticulate pediform 
often retractile organs, which assist varioug 1a larvee 
in walking and other man OnS put which disap- 
pear in the perfect insect.” Prare XVIII. Fre. 
ol Den Os 
* De Geer vii. 38—. ¢. ii. f. 10. rr. ® Vor. IT. p. 251—. 
© De Geer 10507. 7°x1, 2 16. m,n.) 
WOW. hve) De oe 
