246 THE SECRETARY ON ADDITIONS TO THE MENAGERIE. [May 7, 
that of the larger 7. 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 7’. polysticta, and 
nearly one fourth in 7. arabica. ‘Three specimens of the latter species 
are now in the Museum. The type is figured on the Plate. 
EXPLANATION OF THE PLATES. 
Puate XXV. 
Tetraroge quentheri, p. 239. 4. 
Priare XXVI. 
Caranx jayakari, p. 245. 
Prats XXVII. 
Fig. 1. Trigla arabica, p. 245. 3. Fig. 2. Trigla polysticta. Dorsal 
la. Dorsal seutes. | scutes, 
Prats XXVIII. 
Monacanthus mcelanoproctes, p. 242. 
Lol 
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 (Cepra sinaitica) from Mount Sinai, 
presented by Sir James Anderson, April Ist. This is the second 
specimen of this fine Ibex as yet received by the Society. The 
former specimen, received December 30, 1884, is now quite adult. 
It is unfortunate that the present specimen is also of the male sex. 
2. A young male specimen of the Lesser Koodoo (Strepsiceros 
imberbis) from East Africa, presented by George S. Mackenzie, Esq., 
April 18th. We have still living in the Gardens the adult male of 
this beautiful s; ecies, received April 7, 1886. Itis 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. 
Mr. Sclater exhibited and made remarks on a living specimen of 
an albino variety of the Cape Mole-rat (Georychus capensis), lately 
presented to the Menagerie by the Rev. George H. R. Fisk, C.M.Z.S. 
Mr. Fisk wrote that he had hadthe specimen in question in captivity 
two or three months, kept in a box half full of earth and fed princi- 
pally on potatoes. The ordinary cojour of this animal was a uniform 
grey ; the present specimen, however, was of a nearly pure white with 
