438 QUADRUMANES. 



by their crowns passing in front of the upper canines ; but they 

 here present more of the laniariform shape and proportions and have, 

 therefore, been recognised as canines by those Comparative Ana- 

 tomists, M. F. Cuvier for instance, who have regarded the analogous 

 teeth as incisors in the Indris and the higher Lemuridcd. The pre- 

 molars in the Tarsii are conical, and slightly increase in size as they 

 approach the true molars : these have the lobes of the crow^n, espe- 

 cially the outer ones, produced into sharp points. 



The Galagos {Otolicnus) resemble the Malmags in the insec- 

 tivorous character of the crowds of the true molar teeth, but have an 

 additional pair of incisors and smaller canines in the lower jaw. The 

 dental formula in these, as in the Slow Lemurs {Stenojys) is : — 



Incisors — : canines — : premolars — ^: molars — : = 36. 



2—2 ' 1—1 ' ^ 3—3 3—3 



In the Stenops tardigradus{\) the first upper incisor is larger than 

 the second, as in the genus Tarsius. 



The true Lemurs or Makis {Lemur, Geoff.) have the same 

 number and kind of teeth as the Slow Lemurs. The inferior 

 canines, PL 114, (fig, 5, c'), first recognized as such by Geoffroy, 

 are compressed and procumbent like the incisors, but are a 

 little larger. In the upper jaw the two incisors are small and 

 vertical, with short, expanded crowns : the two on the right side 

 are separated by a wide space from the two on the left. The 

 canine (c) is long, curved, compressed, sharp-edged and pointed. 

 The three premolars have the outer part of the crown prolonged 

 into a compressed pointed lobe, whilst the inner part forms a 

 tubercle, which is largest in the second and third. In the true 

 molars the inner division of the crown is so increased as to give 

 it a quadrate form : the outer division being divided into two 

 pointed lobes. The first of the true molars is the largest in both 

 jaws. 



The first premolar above is implanted by two connate fangs : 

 in the second and third they are distinct, and a third inner fang 

 is developed to support the inner lobe of the crow^n. Each upper 

 molar is supported by three short and thick fangs. In the lower 



(1) lb. fig. 4. 





