732 DR. J. E. GRAY ON NEW SPECIES OF ATELES. ([Dec. 12, 
is not generally known, the following particulars may prove interest- 
ing :—She first paired, with a wild Elephant, on the 18th of Decem- 
ber 1863, and on various occasions between that and the 8th of 
January 1864, which gives 593 days from the first date. For the 
first twelve months, although we carefully watched her, there was no 
such increase of size or alteration of shape as would indicate that she 
was in calf; but in the thirteenth month, z.e. January 1865, it was 
discovered that she had milk; and this was the first reason we had 
to consider her in calf. The secretion of milk so long before calving 
seems extraordinary and worthy of remark. The young Elephant 
when born weighed 175 lbs., and was 2 feet 10 inches high.’ ” 
Mr. A. Newton read a letter addressed to. him by Mr. George 
Clark, announcing the discovery in Mauritius of some bones of the 
Dodo (Didus ineptus), which would shortly be transmitted to this 
country for sale. 
The following papers were read :— 
1. Notice or some New Species or Spiper MOonkrys 
(ATELES) IN THE CoLLECTION OF THE British Museum. 
By Dr. J. E. Gray, F.R.S., F.L.S., V.P.Z.S., erc. 
The first two of these Spider Monkeys, when they were alive, were 
considered to be unlike any that had before been in the Society’s 
Gardens. Since they have passed into the collection of the British 
Museum, I have carefully compared them with all the specimens 
we have in that collection; and they seem to be distinct from any 
we before possessed, or that have been noticed in the ‘Systematic 
Catalogue.’ 
The first three species here described belong to the section of the 
genus that has the inside of the leg of the same colour as the out- 
side. 
The first has been named by Dr. Sclater, in the last edition of the 
‘ Catalogue of the Vertebrated Animals in the Gardens of the Society,’ 
the ‘Grizzled Spider Monkey ;” and I gladly adopt the specific 
name he has proposed. 
1. ATELES GRISESCENS, Sclater, MS. 
Fur moderately long, black, with many silvery-white hairs inter- 
spersed; tail black, underside greyish; hair of the forehead mode- 
rately long; face ? thumb none. 
“« Grizzled Spider Monkey,” Sclater, List of Vert. Anim. in Zool. 
Gard., edit. 3, 1865, p. 6. 
Hab. ? British Museum. 
This species is very like A. ater and A. paniscus, but is at once 
known by the silvery hairs intermixed with the black ones, and the 
pale colour of the underside of the tail. There is no approach to 
these characters in any of the specimens of these species in the 
Museum. 
