24G THE SECRETARY ON ADDITIONS TO THE MENAGERIE. [May 7, 



(Plate XXVIL). The orbit of T. arabica is proportionally smaller than 

 that of the larger T. polysticta ; and another conspicuous difference is 

 to be found in the distance between the two dorsal fins, which is two 

 fifths the length of the base of the spinous dorsal in T. polysticta, and 

 nearly one fourl h in T. arabica. Three specimens of the latter species 

 are now in the Museum. The type is figured on the Plate. 



EXPLANATION OF THE PLATES. 

 Plate XXV. 

 Tctrarogt yueniheri, p. 239. I. 



PuvrE XXVL 

 Carayu- jai/akari, p. 2-15. 4. 



PL.VTE XXVII. 



Fig. 1. Triyla arabica, p. 245. 1. 



1 a. . Dorsal scutes. 



2. polysticta. Dorsal scutes. 



Plate XXVIII. 

 Alonacantkus mclanoproctes, p. 242. 



May 7, 1889. 

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



The Secretary read the following report on the additions made to 

 the Menagerie during the month of April 1889 : — 



The registered additions to the Society's Menagerie during the 

 month of April were 93 in number. Of these 40 were acquired by 

 presentation, 27 by purchase, 10 on deposit, and 16 by birth. The 

 total number of departures during the same period, by death and 

 removals, was 88. 



The most noticeable additions during the month were : — 



1. A young male Sinaitic Ibex (Capra sinaitica) from Mount Sinai, 

 presented by Sir James Anderson, April 1st. This is the second 

 specimen of this fine Ibex as yet receiA-ed by the Society. The 

 former specimen, received December 30, 1884, is now quite adult. 

 It is untbrtunate that the present specimen is also of the male sex. 



2. A young male specimen of the Lesser Koodoo (Strepsiceros 

 imberbis) ixom East Africa, presented by George S. Mackenzie, Esq., 

 April 18th. We have still living in the Gardens the adult male of 

 this beautiful species, received April 7, 1886. It is again unfortunate 

 that the newly received animal is of the male sex ; but as the species 

 occurs in the territory of the new British East-African Company, we 

 may well expect to receive further specimens. 



