HOODED SERPENT. 



93 



3. Digastricus with 



3' its cutaneous portion. 



4. Temporalis posterior with 

 4' its maxillar portion, 



5. Temporalis medius. 



6. Temporalis anterior with 

 6' its maxillar portion. 



7. The sac surrounding the venomous gland. 



8. The excretorian duct. 



9. The dujjlicature of the palatal membrane, covering the fangs. 



10. Submaxillar salivarian gland. 



11. Submandibular salivarian gland. 



12. Tendo articulo-maxillaris, spreading carneous fibres over the sac. 



B. The venomous gland and its surrounding muscles loosened and bent over to shew the 



subjacent muscles. 



1. Vertebro-mandibularis. 



2. Cervico-angularis. 



3. Digastricus. 



4. Temporalis posterior. 



5. ■ medius. 



6. anterior, 



7. The venomous gland. 



8. Pterygoideus externus. 



C. Lateral view of the skull. 



D. 1. External appearance of the venomous gland. 



2. The gland longitudioally divided, by which the cells and their little ducts 

 proceeding into the common excretorian duct, are laid open, 



Plate XIT. , 



A. The integuments covering the head and part of the neck. 



B. The integuments of the lips, chin and throat. 



C. Outline of the head of the specimen No. 4, in the text. 



D. Outline of the head of a Naja tripudiaus, about 4 feet in length. 



E. Scales. 



1 of the neck. 



2 and 3 of the trunk. 

 4 of the tail. 



F. Outline of the integuments covering the abdominal surface of the tail. 



Y 



