786 DR. J. MURIE ON MACACUS SPECIOSUS. [Julie 18, 



sition of the hairs, and partly because of its upper or coronal super- 

 ficial flatness, with the superciliary ridges projecting over the orbits. 

 The face is prolonged forwards, causing the muzzle to be prominent ; 

 the nostrils are patulous. The ears are small, with a bare space 

 round them, but a pencil of scattered hairs start from the concha. 



Subjoined are the measurements of the head in the fresh condi- 

 tion : — From nape of neck to the vertex 1\ iuches ; occiput to frontal 

 or supraorbital ridge 6| inches ; from the middle of one ear to the 

 other following the curve 6^ inches ; breadth between the malar pro- 

 minences, in a horizontal line, 3| inches ; distance between the centre 

 of the two eyes 1 \ inch ; vertical height from the superciliary ridge 

 to the lower border of the mandible 3ij iuches. 



Dentition : incisors f, canines f , premolars and molars \, = 20. 



The pollex or thumb is well developed, and almost an inch long. 

 The two middle digits are subequal, but the second and fifth shorter, 

 the last being smallest. The palm has a length of Ah and a breadth 

 of 1^ inch. As regards the sole of the pes, from heel to mid toe- 

 nail is 6^ inches, at its middle \\ and at the heel 1 inch across. 

 Other bodily measurements which I may notice are : — 



Length from back of the neck to the root of the tail 1 7 inches. 



Girths: thorax 16, and abdomen 12 inches. 



From shoulder to elbow 7, and elbow to wrist 6£ iuches. 



From hip to knee 6^, and knee to sole 7\ inches. 



The short tail has but little hair on it, excepting at the sides of 

 the root. This caudal appendage, indeed, is remarkable on account 

 of its brevity, being no more than 1-| inch in extreme free length, 

 taken from opposite the ischial tuberosities as its root of origin. 



The results of my researches on the anatomy of the Japanese 

 Monkey do not coincide with those of M. Temminck. As I hiuted, 

 he regards it as specifically distinct from the Magot (Inuus), but 

 looks upon it as belonging to that genus. He observes there is great 

 resemblance between them — but among other things notes that 

 J. ecaudatus has twelve, and I. speciosus thirteen ribs, that the former 

 is tailless, the latter has five caudal vertebra? ; the Magot he con- 

 siders has the longest femur and humerus of the two, and the Japanese 

 Monkey less facial prominence (prognathism). I grant there is 

 uncommon likeness in cranial type between the two ; but as to the 

 caudal vertebrae in both, De Blainville's, Mivart's, and my own re- 

 searches are at variance with Temminck' s. Again, although the limbs 

 of the European form are absolutely longer than the Japanese, the 

 latter, as the above table shows, has them proportionally the longer. 

 Instead, therefore, of looking upon the Eastern form as a second 

 species of the genus Inuus, I am inclined to the opinion that Inuus 

 ought to fall under Macacus, as Fred. Cuvier classed it. Thus among 

 the Macaques a series from very short- to long-tailed fellows obtains, 

 M. maurus, M. ochreatus, and M. speciosus leading onwards from the 

 remarkable caudal abbreviation witnessed in the so-called Barbary 

 Ape. When I have treated of some other of the rarer kinds of Maca- 

 ques, material for which I have in hand, I hope in a future commu- 

 nication to review the group, and with special reference to their geo- 



