PEIMATBS FEOM MADAGASCAE. 



Ill 



detailed description of several skulls brought to Europe by the collector Sikora. These 

 he refers to the same species as that described by Grandidier in 1899, though he 

 distinguishes two varieties as DolichoGej)lmlus and Brachycephalus. Dr. Grandidier 

 himself, who has seen the London and Vienna specimens, does not hesitate to refer 

 them all to one species, identical with that first described by himself. He concludes, 

 however, that in view of the complete series the points of distinction differentiating 

 these fossils from M. madagascariensis no longer justify the retention of the genus 

 Peloriadapis, and he gives the name If. edwardsi to all these remains. 



Megaladapis GEANDiDiERi (Standing). (Plates XXIV.-XXVI.) 

 The new species of Megalada])is discovered at Ampasambazimba differs in several 

 important particulars from the two species previously known. In size the skull of 

 this new species agrees in general with Megaladapis edwardsi, though in certain of its 

 dimensions it surpasses the latter. The maximum length of the skull, measured from 

 the occipital condyle to the anterior border of the nasal bone, is 292 millimetres, this 

 being the average for three perfect skulls, the largest of which, however, measures 

 312 mm. The average maximum length for four skulls of M. edwardsi in the Vienna 

 Museum is 291 mm., though three of the measurements are apparently only approxi- 

 mate estimates owing to the imperfect condition of the skulls. 



One of the most striking characters of the new species has already been referred to 

 in the general description of the genus, viz., the great interorbital breadth. In 

 M. grandidieri this measurement exceeds by some 30 mm. the corresponding dimensions 



Text-fig. 25, 



Anterior part of mandible of Mec/aladaj^is gmiuUcUeri, showing spout-like projection 

 carrying procumbent incisors. 



of M. madagascariensis. The bi-zygomatic breadth slightly exceeds that of i^. edivardsi. 

 One of the most noticeable features of M. grandidieri is the curious lengthening out 

 of the anterior part of the muzzle. Correlated with this is a long diastema of some 

 30 mm. between the canine and the first premolar in the upper jaw. A similar 

 interval exists in the mandible, the anterior part of which is drawn out into a shallow 

 spout-like extension which carries the first premolars and the procumbent canine and 

 incisors (text-fig. 25). 



