f>56 LETTER FROM MR. R. SWINHOE. [Dec. 13, 



The Javan and Sumatran races (Leptopteryx leucorhynchus, (Gra.), 

 Horsf. Tr. Linn. Soc. xiii. p. 306) only have been referred by Prince 

 Bonaparte to leucogaster, Val. ; but as Valenciennes omits all men- 

 tion of specimens from those islands, the adoption of his designation 

 does not appear to be well founded. If this form does differ from 

 the two preceding, it would seem to be without a title, were it not 

 probable that the Andaman race is identical with it ; for on com- 

 paring Captain Beavan's specimens with a Moreton Bay example of 

 A. leucopyyialis, Gould, I can detect no distinctions between them. 

 Actual comparison must, however, be made with Javan and Sumatran 

 individuals. 



6. Onychoprion melanauchen, (Temm.). 



Sterna melanauchen, Temm. PI. Col. 427. 

 No. 8. Andamans. 

 In full plumage. 



December 13, 18C6. 



John Gould, Esq., F.R.S., V.P., in the Chair. 



The Secretary read a letter addressed to him by Mr. R. Swinhoe, 

 F.Z.S., dated British Consulate, Amoy, China, September 7th, 1866, 

 announcing the shipment to the Society of a Monkey from the island 

 of North Lena, near Hongkong, supposed to be of a new species, 

 which Mr. Swinhoe described as follows : — 



"InUUS SANCTI-JOHANN1S, Sp. nOV. 



" Eyes bright hazel ; face and ears flesh-coloured ; cheeks with a 

 black tuft on either cheek like whiskers ; skin of under parts tinted 

 with blue, and sparsely covered with hairs of a light grey, the hairs 

 on the belly buff; fur of upper parts greyish brown, washed with 

 buff, which is lighter on the head, and brickdust-red round and 

 about the rump. Tail 4 \ inches long, blackish ; and callosities flesh- 

 coloured. Face narrow and somewhat projecting. 



" Commander St. John writes to me under date Hong Kong, 

 27 June, 1866, 'In one of my late cruizes in H.M. Gunboat 'Opos- 

 sum ' I put into the North Lena Island, and was fortunate enough 

 to pick up this Monkey for you. It is a female about four months 

 old, and is already quite tame. I tried to shoot an old one, so as 

 to let you have the skeleton ; but they were rather tough for the 

 shot I had, and a living specimen will be much better.' " 



Mr. P. L. Sclater exhibited specimens of Eustephanus fernan- 

 densis (Gould's Trochilidse, vol. iv. pi. 267) and E. stokesi (ibid. 



