AA, Fascia cover- 
ing the anterior and 
posterior temporal 
muscles ; B, small 
gland ; c, tendin- 
ous insertion of the 
fascia; D, poison- 
duct; E, poison- 
fang ; F, reserve 
fangs ; G, mandible; 
VENOMS 
22 AY av a7 ay LS — 
H, ectopterygoid muscle J, poison-gland covered by the masseter; K, masseter inserted 
in the mandible ; L 
AA, Ectopterygoid muscle ; B, 
præ-spheno-pterygoid muscle; c, 
intermandibular muscle; D, præ- 
spheno-palatine muscle ; E, præ- 
spheno-vomerine muscle; F, cap- 
sule of mucous membrane sur- 
rounding the fangs; 
muscle of the neck. 
G, long 
insertion of the temporal muscle; M, digastric muscle. 
Fics. 9 AND 10.—MUSCULAR APPARATUS AND POISON-GLAND OF Vipera russellii 
( Viperide). 
(After Sir Joseph Fayrer. 
