56 UNGTTLATA. 



39594 d. The anterior portion of the cranium, showing the cheek- 

 dentition, in a well-worn condition ; from the Pliocene of 

 the Siwalik Hills. Cautley Collection. Presented, 1842. 



39571. The palate and the associated middle portion of the man- 

 dible ; from the Pliocene of the Siwalik Hills. 



Gautley Collection. Presented, 1842. 



36668. The distal half of a radius, and a palate, not improbably 

 belonging to an immature individual of the present 

 species ; from the Pliocene of the Siwalik Hills. 



Presented by the Secretary of State for India, 1860. 



Alcelaphus bakeri, Lydekker 1 . 



This species is founded on the cranium noticed below, which 

 apparently indicates an animal closely allied to the existing A. 

 pygargus, or Bonte-bok. The horn-cores are more approximated 

 than in A. paloeindicus, and the face shorter, with a shallower 

 lachrymal depression. 



Hab. India. 



39598. The greater portion of the cranium of an immature indi- 

 vidual, showing the bases of the horn- cores, but wanting 

 a considerable portion of the face ; from the Pliocene 

 of the Siwalik Hills, India. The last true molar is not 

 protruded, and the sutures are mostly invisible ; the distal 

 portion of a horn-core has been crushed into the face. 

 The specimen agrees very closely in general contour with 

 the cranium of A. pygargus, especially in the form of the 

 flattened frontals; the closely approximated horn-cores, 

 placed on a high-pitched ridge ; the form of the lachrymal 

 depression, and apparently of the nasals ; as well as in 

 the absence of supraorbital pits and of a lachrymal 

 vacuity ; a process of the maxilla runs up between the 

 frontal and lachrymal in both. The fossil is somewhat 

 smaller than the recent skull ; but this is no doubt partly 

 due to immaturity, as the cheek-teeth of the former are 

 larger than those of the latter. The occipital and basi- 

 occipital regions, as well as the hinder part of the palate, 

 are almost precisely the same in the two forms. The palatal 

 vacuities appear to be placed less anteriorly in the fossil ; 

 but this also maybe partly due to immaturity. The horn- 

 cores had the same relative position in the fossil as in the 



1 G-eol. Mag. dec. 3, vol. ii. p. 170 (1885). 



