CLASS IT. MYRIAPODA. 
113 
Lamarck arranged them with the Arachnoidea in three Genera; 
Scolopendra; 2.Scutigera; 3. Junta; and in his last work he has 
adopted a fourth genus, Pollyxenus. 
Having given a slight sketch of what has been done by systematic 
"Titers, I shall proceed with the arrangement proposed by Dr. Leach, 
"Inch differs from them merely in considering them as constituting a 
distinct Class, and in disposing the species under some additional ge- 
neric heads, which a minute examination of their structure has most 
u % warranted. 
Classification. — All the Myriapod a have their head distinct from 
me body, furnished with two antenna;. Mandibles two. Maxilla four, 
c onflu ent and forming a lower lip. All or most of the segments of the 
“<Xly furnished with two or four legs. 
The nervous system is composed of a series of ganglia, one in each 
Se gment of the body; these ganglia are brought into communication 
" *th each other by two longitudinal bundles ot nerves, or, as they are 
S e neral]y but improperly denominated, by a spinal marrow. 
Ihe Cm log natii a ami Syncnatha, established as Families by La- 
rci Ue, arc adopted as Orders by Dr. Leach. 
Hrder I. Cuilognatha. — Antenna seven-jointed. Legs short. Body 
8 e nerally crustaceous. 
Order II. Syngnatha. — Antenna composed uf fourteen or more joints. 
‘' e & elongated. Body depressed, coriaceous or membranaceous. 
Order I. CIIILOGNATHA. 
Fam. I. ClomeridjE. Leach. 
^'" ht contractile info a globe. Eyes distinct. 
, Genus I. GLOMERIS. Latr., Dimer,, Leach. Armadillo. Cico. 
with the two first joints shortest, the sixth largest including 
me last, which is very small ; body elongate-ovate, convex above, 
^ r °hed beneath; first segment a little semicircular lamina; the se- 
c pnd larger than the others ; tire last semicircular and arched : legs 
sixteen pairs. 
P' f- Glo. marginata. Black; the margins of the segments luteous 
“r orange. 
‘j'seus marginatus. Villers, Entom. iv. 187. t. 11./ 15. Glomeris 
JOrt le. Latr. Hist. Nat. lies Crust, etdes Insect, vii. 66. Oniscus mar- 
Smatus. otiv. Encycl. M&th. Hist. Nut. vi. p. 24. Julus oniscoides. 
sownson's Tracts, p. 151. Stewart's Elem. Nut. Hist. ii. 307. Glomc- 
ris n 'arginata. Latr. Gen. Crust. et Insect, i. 74. Leach, E din. En- 
c ~ /cl - v ii. 407.— Trans. Linn. Soc. Xl.—Suyp, to Encycl. Brit. i. 430. 
P ' 22 — 2oo/. Misc. iii. tab. 132. 
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