GENERAL CLASSIFICATION OF POISONOUS SNAKES 13 



A Tracheo mastoid muscle; bb, digastric muscle ; c c, posterior temporal muscle; 

 D D, anterior temporal muscle ; e e, masseter ; F, poisou-glaad, covered by the masseter 

 and fascia ; G, poisou-duct ; H, maxillary bone ; i, neuro-mandibular muscle ; j, costo- 

 mandibular muscle. 



A, Entopterygoid muscle ; b, 

 poison-gland ; c, poison-duct ; 

 D, poison-fangs; e, prae-sphe- 

 no-palatine muscle ; f, prse- 

 spheno-vomerine muscle ; g, 

 capsule of mucous membrane 

 surrounding the fangs ; h, prse- 

 sphenopterygoid muscle (which 

 erects the fangs) ; j, inter-man- 

 dibular muscle ; k, ectoptery- 

 goid muscle ; l, long muscle 

 of the neck (longus colli). 



Figs. 11 asd 12.- 



-jNIuscular Apparatus and Poison-gland of Naja tripiidians 

 {Colubrida). (After Sir Joseph Fayrer.) 



