BY N. DE MIKLOUHO-MACLAY. 893 



presents some strongly marked transversal folds, of the disposition 

 of which, a glance on Fig. 3 can give a better idea than a long 

 description. The anterior part of the palate, between the second 

 lateral incisor and the first transversal fold is only half the width of 

 the palate between the 3rd and 4th molar. 



Dentition. 3 1 3 



— i, — pm. — m. (Fig. 3 and Fig. 4.) 

 1 1 4 



Incisors. (Fig. 5 and 6.) The first, is a little longer than the 

 other two, the second little smaller than the first and third and the 

 third broader than the first and second. The lower margin of the 

 third incisor is not a straight line but an angular one and presents 

 on his posterior lower corner an indication of a fold which is 

 rather easy to discern only when the skull is taken out. (Examin- 

 ing the incisors of the stuffed specimen, I was not at all sure 

 about the existence of the fold and convinced myself of it only 

 after having examined the skull.) 



The third incisor inspected from below (Fig. 6), consists of two 

 longitudinal, parallel edges, of which the interior is lower than the 

 exterior. The third incisor of Macropus (Halmaturus Thetidis (*) 

 is a little like the corresponding tooth of Macropus Jukesii. 



Premolars. The upper premolar is not larger (broader) than the 

 first molar. On the cutting edge of the upper premolar 2 anterior 

 cusps and a 3rd longer and less pointed one are distinctly to be 

 seen. The lower premolars are smaller than the upper and have 

 also 3 marked cusps on the cutting edge. 



The anterior cusps of premolars of both jaws are the most distinct 

 and the most pointed. The incisors and premolars have suffered less 

 from the effect of the salt than the molars, where the crust of 

 magnesia could not be removed without destroying the teeth, i.e., 

 breaking also away pieces of enamel. Notwithstanding the crust 

 the usual shape of the molars of Macropodidse could however easily 

 be discerned, as well as that the transversal l'idges only of the first 

 maxillar and of the first and second mandibular molars have been 

 to a certain extent worn down. 



(*) Waterhouse. Mammalia II., p. 194, pi. 3, fig. 2 c. and d. 



