64 Further Illustrations of the Antilope Hodgsonii. [Feb. 



There are two species of Antelope* at least, besides the Chfru, 

 wanting that solid character in the nuclei of the horns, which has 

 heretofore been held to be so essentially indicative of the genus. 



The frontal processes take their origin from the frontal bone at 

 the distance of three quarters of an inch from the apices of the nasal 

 bones, anteriorly ; and half an inch from the proximate point of 

 junction of the frontal and parietal bones, posteriorly : laterally, 

 their distance from the orbital ridge of the temporal bone is |- of 

 an inch ; and from the proximate point of the frontal suture 1 ^ths 

 of an inch. The basal interval of the frontal processes, or 

 unsheathed pecicular portion of the long nuclei, is rather more 

 than ^ inch : their circumference, pretty close to the base, 4f inches ; 

 and their height, from the adjacent part of the orbital arch to the 

 commencement of the horny sheath, ^ an inch. 



The frontal processes proceed from the forehead, above and 

 between the orbits, with a slight inclination outwards and backwards 



so slight, however, that the long horns which they support assume 



very nearly an erect position in the natural state of the animal: and 

 it is the outward, not the backward inclination, which prevents one 

 from justly characterising the horns as vertical. 



The occipital bone forms the posterior boundary of the skull, 

 with exception of the triangular portion, on which arises the crista 

 occipitalis ; and this portion is locked between the ends of the parietal 

 bones, and is situated superiorly. The occiput then proceeds almost 

 perpendicularly downwards, with an inclination backwards, in conse- 

 quence of which inclination the foramen magnum and its condyles 

 form the most posterior and inferior part of the skull. The opening of 

 the foramen is in the same parallel with the opening of the nasal 

 bones. 



The relative shortness of the frontal and correlative elongation of 

 the parietal bones is worthy of remark ; as well as the development of 

 the entire longitudinal dimensions of the latter, upon the superior sur- 

 face of the cranium. 



The forehead is rather convex, and is sloped without any sudden dip 

 to the nose, which latter is somewhat arched. A slight longitudinal 

 ridge extends from the lambdoidal suture down the centre of the 

 skull, a little beyond the anterior limits of the cores of the horns. 

 There is no symptom on the skull of lachrymary sinuses. 



* A. Bubalis, the sinus discovered by Blumenbach and A. Thar ; the sinus 

 discovered here, by Dr. Bramley, from a skull in my possession. 



