ORJSMOLOGY. 353 



4. POLYPOD (Polypus). Having more than eight legs 



but under Jifty. Ex. Glomeris, Cermatia. 



5. CENTIPEDE (Centipes). Having more than Jifty legs 



but under two hundred. Ex. Scolopendra. 



6. MYRIAPOD (Myriapus). Having two hundred legs 



or more. Ex. lulus. 



B. Situation. 



1. ANTEPECTORAL (Antepectorales). The fore-legs or 



arms, affixed to the Antepectus. 



2. MEDIPECTORAL (Medipectorales). The mid-legs, 



affixed to the Medipectus. 



3. POSTPECTORAL (Postpectorales). The hind-legs, af- 



fixed to the Postpectus. 



4?. DISTANT (Distantes). When the pairs of legs are 

 remote from each other at their base. Ex. Inter- 

 mediate legs of Copris. 



5. APPROXIMATE (Approximati). When they are near 



each other at the base. Ex. Posterior legs of Co- 

 pris. 



6. EQUIDISTANT (JEquidistantes). When all the three 



pair are equally distant at the base. Ex. Cassida. 



C. Duration. 



1. PERSISTENT (Persistences). Legs which the insect 



has in all its states. Ex. The legs attached to 

 the trunk. N.B. TJiese are called Legs (Pedes). 

 PLATE XVIII. FIG. II. a. 



2. DECIDUOUS (Decidui). Legs which the insect has 



not in all its states. Ex. Membranous legs of Ca- 

 terpillars. PLATE XVIII. FIG. 11. b. N.B. These 

 are called Prolegs (Propcdes). 



VOL. IV. 2 A 



