552 



DR. 0. J'. SONNtAG on the COMPARATIVE ANATOMY 



Macalister (7) described the styloid groii^p of muscles as 

 follows: — "The styloid group form a single sheet, the hind 

 fibres of which pass to the pharynx, the middle to the ceratohyal 

 under the stylohyoid ligament ; the antei-ior pass to the side of 

 the tongue." 



The digastrics have the usual attachment, and they are united 

 by muscular fibres to other muscles around. 



The stylo-hyoid ligament is loose (text-fig. 56, h). The genio- 

 hyoids are connected to the digastrics by muscular slips {h). 



Text-fieure 57. 



The deep aiiatomj' of the neck of Trichosurus vulpecula. 

 D. stevno-mastoid ; E. digastric; k. hyoid hone; m. common carotid artery; 

 n. external jugular vein; o., vena transversa; q. anterior jugular vein; 

 r. s. thyroid and Liryngeal arteries. Other letters in text. 



The cervical lymphatic glands form two groups. The first, 

 consisting of a few large glands, is a little posterior to the 

 prominent alisphenoid bullae The small glands of the second 

 group are around the great veins at the root of the neck. 



The distance from the symphysis menti to the level of the 

 angles of the mandible is 6 cm., from the angles of the mandible 

 to the hyoid bone 1"2 cm., and from the hyoid bone to the 

 sternum 6 cm. 



