ORDER TRACHEARIiE. 
501 
Phalangium, 
Which have the forceps projecting, much shorter than the 
body, and the eyes placed upon a common tubercle. 
Their feet are very long, very slender, and when detached 
from the body, they exhibit, for a few instants, some signs of 
irritability. The generative organ of the male has the form of 
a dart, terminating in a semi-barb. The female has a mem- 
braneous oviduct, in the form of a thread, flexible, and 
annulated. The trachea? are tubular. 
Phalangium cornutum, Lin., male; Opilio, ej usd. female, 
Herbst., Monog. phal. i. 3. male, ibid. i. female. Body oval, 
reddish, or ash-colour above, white underneath, palpi long ; 
two ranges of small spines on the tubercle which carries the 
eyes, and prickles on the thighs. Forceps horned in the 
male ; a blackish band with its edges festooned in the female. 
A celebrated English entomologist, Mr. Kirby, has formed, 
under the name of Gonoleptes, a peculiar genus, or species, 
which have the palpi spiny, with the last two articulations 
almost of the same size, subovoid, and with a strong terminal 
claw, and the haunches of the two posterior feet very large, 
soldered together, and forming a plate under the body. These 
feet are remote from the others, and thrown backwards. 
In phalangium proper, the palpi are filiform, without 
spines, terminated by an articulation, much longer than the 
preceding, and with a small hook at the end. All the feet 
are approximated, with haunches similar and contiguous at 
their origin. Such are all our indigenous species. 
Siro, Latr., 
With projecting forceps almost as long as the body ; eyes 
apart, and each carried on an isolated tubercle, or without 
support. 
