New Family of Spiders — Forster 
285 
Poison Glands: These are endocephalic. They 
are cylindrical and are bent down in the region 
of the second pair of coxae to run forward for 
a short distance before terminating bluntly. 
Silk Glands: In the female only cylindrical 
and pyriform glands appear to be present. A 
large number of long cylindrical glands ex- 
tend back above and lateral to the gut and 
appear to open from both the median and 
posterior spinnerets. Numerous small pyri- 
form glands and a group of three large pyri- 
form glands open from each anterior spin- 
neret. In the male all spinnerets appear to be 
supplied from small pyriform glands while a 
small bunch of much convuluted cylindrical 
glands opens from each anterior spinneret. 
Respiratory System : Two pairs of lung books 
are present. The anterior pair occupies the 
normal position and has from 50 to 54 
lamellae. The posterior pair are smaller and 
more closely spaced and each is composed of 
from 21 to 22 lamellae. 
Circulatory System: The heart is large and is 
supplied with four pairs of ostia. 
REFERENCE 
Petrunkevitch, A. 1933. An enquiry into 
the natural classification of spiders, based 
on a study of their internal anatomy. Conn. 
Acad . Arts and Sir/., Trans . 31: 299-389- 
