116 



THE GENERAL ANATOMY OF THE TARSII [SECT. A 



As a result of this, Tarsius is not lowered in position when the 

 smallest Lemurs are employed as the standard. 



But the curious combination of primitive with advanced 

 characters confers upon the brain of Tarsius an interest hardly 

 to be equalled among its congeners. 



I. The Organs of Respiration. The Lungs. The distinctive 

 character of these organs is the multiplicity of the lobes, for the 



\MlM^ 



Fig. 67. Tarsius spectrum. Vertical coronal section of the larynx, through 

 the anterior part of the plica vocalis. The m. crico-thyroideus does not pass far 

 up inside the thyroid cartilage here, but further back it does so. 1, extreme margin 

 of the epiglottis in the plica ventricularis ; 2, appendix laryngis ; 3, hyoid bone ; 

 4, thyroid cartilage; 5, cricoid cartilage; 6, m. thyro-arytenoideus ; 7, m. crico- 

 thyroideus. ( x 8.) 



right lung has five lobes (including a lobus impar), the left lung 

 being divided into four parts. The tracheal rings are complete 

 (as in the Lemurs, excepting the Galagos). 



The Larynx (Fig. 67). The form of the epiglottis approaches 

 that of the Lemurs. In respect of other features Tarsius must, 

 however, be contrasted with those animals. For the examination 



