1872.] DR. J. MURIE ON MACACUS SPECIOSUS. 781 



character than in the longer- tailed Macaques, but does not differ in 

 numbers. 



In the upper view of the adult skull shown in the ' Fauna Japo- 

 nica ' (pi. ii. fig. 1) the breadth to length and the rotundity of the 

 parietal region are greater than in our specimen. As a consequence 

 the skull does not offer that remarkable dolichocephalic shape which 

 notably pertains to that here described. In this, length is prepon- 

 derant, and the breadth at the coronal, parietal, and occipital regions 

 subequal. The front rises high and continues nearly level to the 

 occiput, where it is round and full prior to shelving towards the 

 foramen magnum. Temminck's figure compared with this specimen 

 is not so elevated forwards, and the inferior occipital face is longer. 



The coronal suture in ours is more angular than semilunar. The 

 nasals are narrow, long, and not so depressed as in M. maurus. 

 The face is fairly prognathous, the maxillae and praemaxillse narrow- 

 ing forwards so as to give a somewhat feminine cast. Malar arches 

 moderately expanded. The superciliary ridge is not prominent, 

 though full ; and the orbits are high rather than broad, with a 

 rounded upper angle. Petrous portion of the temporal is not inflated, 

 but has a process anteriorly. Auditory canal full-ridged. 



As to the mandible, the symphysial division rises obliquely for- 

 wards ; the angle is but slightly rounded ; and the ramus has a rear- 

 ward tilt. The bone altogether is stout ; and the posterior part of 

 the symphysis is lengthened by a bridge of bone to which probably 

 the digastric muscles are attached. 



Cranial measurements. 



M. s])cciosns. M. inuus. 

 inches. inches. 



From front of prsemaxillee to occiput= extreme 



length 4"5 5-0 



Diameter of malar arches = extreme width .. 3 - 3*5 



Long cranial axis, or from supraorbital ridge 



to occiput 3 - 15 3*35 



Transverse cranial axis, or diameter at squamals 2*3 2*4 



Width at frontal behind the orbits T85 1-85 



Height in a vertical line striking the middle of 



the sagittal suture to the anterior edge of 



foramen magnum 2*1 2'3 



Height, vertical line dropped from middle of 



frontal to lowest part below 2 - 4 2*4 



Greatest height of skull with the lower jaw 



resting on a table 3*5 3 - 8 



From supraorbital ridge to end of praemaxilla 2*3 2*65 



From the lower border of nasals to supraorbital 



ridge 1-3 1-35 



Width between external edges of orbits .... 2-4 2*8 

 Diameter of maxillae, line cutting second pre- 

 molar 1-4 1 • 1 



Palate, from front of pi semaxillac to post, nates 1*7 1*95 



