510 
MYRIAPODA. 
crease with the natural elongation of the animal from age.— 
Lamarck divides this class into two orders.—I. Chilognatha ; 
and II. Chilopoda. 
ORDER I.—CHILOGNATHA. 
Antennae seven-jointed and filiform; mouth composed of two 
mandibles and a lip divided by sutures ; with two or four ante¬ 
rior feet united at their base, resembling pedipalpi; and having 
distinct spiracles. This order contains five genera. 
TRIBE I.-ANGUIFORMIA. 
With the body generally linear, covered with a solid skin; 
and destitute of anal appendages ; antennae thickest towards the 
termination ; with at least thirty-two feet. — This tribe contains 
four genera.—1. Glomeris; 2. Julus; 3. Polydesmus; 4. Cras- 
pedosoma. 
Genus 2.—JULUS.— Linnaeus. 
Generic Character. —Body serpent-shaped and cylindrical; the 
second joint of the antenme longer than the third ; legs numer¬ 
ous. 
Julus subulosus.— The Gally Worm. 
Plate XCVII. fig. 3. 
Blackish-brown, with two rufous dorsal lines; last joint mu- 
cronate. One inch and a half long. Inhabits Europe, under 
stones. 
TRIBE II.-PENIC1LLATA. 
With an oblong membranaceous very soft body, with ridges on 
the sides formed by scales, and a pencil of ciliated hairs at its 
posterior end; with filiform antemue, and twenty-four feet— 
It has one genus. 
Genus 5. — POLYXENUS.— Lamarck. 
Generic Character. — With short filiform, and moniliform an¬ 
tennae, inserted under the anterior margin of the head; devoid 
of palpi; body soft, elongated, and depressed, with scales on 
