NATURAL HISTORY. 
CLASS HI, ARACHNOIDA (Leack.} 
The Linnean genera Phalangium, Aranea, and 
Scorpio, belong te this class as established and 
defined by Dr, Leach in the 3d volume of the 
Zoological Miscellany, They were arranged both 
by Linneus and Cuvier amongst the apterous 
insects. 
ORDER 1. POLYMEROSOMATA. 
The body composed of a series of segments—the 
abdomen not pedunculated. 
SIRO. Rubens. (Latr.) In woods amongst moss. 
SCORPIO. OBISIUM. &e, Zool. Mise. v. 3, 
A natural group, for an account of which we 
refer to Dr. Leach’s Monograph. 
ORDER 2. DIMEROSOMATA. 
Body composed of two segments—abdomen 
pedunculated, 
PHALANGIUM. Optio. (Latr.) Onwalls, &e. 
Long Legged Spider. 
ARANEA. Domestica. Lin. (Latr.) and other 
authors. The Common House Spider. 
AGELENA. Lasyrintuica. Leach, Common 
on the ground in fields, spinning a horizontal 
well with a funnel shaped cavity, 
