OF PHILADELPHIA. 29 



neath, anterior pair shortest, posterior longest and more robust ; 

 labium longitudinally indented, impunctate, teeth of the tip black. 



Length more than one inch. 



Yery common under stones, &c. The specimen from which 

 this description was taken has but thirty joints to the antennae. 



Genus CERMATIA. 



C. COLEOPTRATA Villiers. Is an inhabitant of the Southern 



States; we observed it both in Georgia and East Florida. It is 



probable, that, like a vast number of the insects now common in 



our country, it has been introduced by our shipping from abroad. 



Genus SCOLOPENDRA. 

 Ant€nu8e conico-setaceous ; dorsal scuta subequal ; eyes, four 

 each side, hemispherical. [110] 



1. S. MARGINATA. — Body obscure olivaceous green; segments 

 margined with dark green ; head castaneous. 



Inhabits the Southern States. 



My Cabinet. 



Body obscure olivaceous green, beneath whitish or fulvous; 

 segments impunctured, margined each side and behind with 

 black-green ; first, third, and fourth shortest, five or six terminal 

 ones more distinctly margined ; head chestnut color ; antennae 

 green ; feet pale, tipped with bluish green, nails blackish ; pos- 

 terior feet hardly longer than the three terminal segments of the 

 body conjunctly ; length of the joints hardly equal to double 

 their breadth ; first joint spinous beneath and within, and armed 

 with an acute, strong, projecting angle at the tip. 



Length more than two and a half inches. 



Rather common in Georgia and East Florida ; it is also found 

 in the West Indies, but does not occur so far north as Pennsyl- 

 vania. 



2. S. viRiDis. — Body bluish green ; base of the feet and all 

 beneath whitish. 



Inhabits Georgia and East Florida. 



My Cabinet. 



Body above bluish green, immaculate ; posterior segments 

 margined with pale yellowish ; mandibles yellowish-white ; feet 

 whitish at base, terminal joints pale bluish-green, posterior pair 

 pale yellow. 

 1821.] 



