22 THE SECRETARY ON ADDITIONS TO THE MENAGERIE. [Jan. 20, 



frontals, forms a much more obtuse angle than in N. saltianus, but 

 is not a straight transverse Hne as in N. lirkii. The size of these 

 bones is the same as in the Abyssinian species. 



3. The hindmost molar of the lower jaw has a third lobe deve- 

 loped behind with a single enamel fold as in N. kirkii. 



Fig. 12. 



Fig. 11. Posterior mandibulary molar of iV. saltianus. 

 Fig. 12. Posterior mandibulary molar of N. damarensis. 



The nasal cavity seems to be as distensible as in the Abyssinian 

 species. 



I add the following extract from a letter addressed by Mr. Trimen 

 to Mr. Sclater regarding this animal (d. 20 Oct. 1879) : — 



" It was sent to me in March last from Damara Land by Mr. 

 Eriksson, who has lately presented to us a male specimen. The 

 Museum previously possessed a young male, also a Damara- Land 

 specimen, presented by the late Mr. James Chapman . . . The 

 colouring of the male and female is the same ; but the adult male 

 has straight horns 2f inches long, with prominent irregular ridges 

 (seven in one example) circling their basal half. In the young male 

 that we have the horns are 1 inch shorter, and there are only three 

 undeveloped basal ridges. 



" Mr. Eriksson informs me that this antelope frequents rocky 

 hills in the vicinity of Omaruru (about a degree north of Walvisch 

 Bay), but is not easily procured, owing to its great agility among 

 its stony haunts." 



The typical specimen has been presented by Mr. Sclater to the 

 British Museum. 



January 20th, 1880. 

 Prof. Flower, LL.D., F.R.S., President, in the Chair. 



The following report on the additions to the Society's Mena- 

 gerie during the month of December 1879 was read by the 

 Secretary : — 



The total number of registered additions to the Society's Mena- 

 gerie during the month of December 1879 was 54, of which 2 were 

 by birth, 24 by presentation, 19 by purchase, 1 by exchange, and 

 8 were received on deposit. The total number of departures during 

 the same period by death and removals was 138. 



The most noticeable additions during the month were : — 



1. A young pair of Pronghorn Antelopes (Antilocapra ameri- 

 cana), purchased December 4, being the first pair of this interesting 

 ruminant that we have had together in the Gardens. 



