phenomena. 
Dr. T. Cantor on a species of Semnopithecus. 335 © 
which then occupied but little space in the cell, has become con- 
siderably increased in amount, an increase having also taken 
place in the length of the cell: at length the process of division, 
&e. occurs as before, and a second spore is formed adjoining the 
first. The formation of a third spore involves a similar chain of 
I am, Gentlemen, your very obedient servant, 
G. H. K. Tuwaires. 
XLV.—On a species of Semnopithecus from the Peninsula of 
Malacca. By Turopor Cantor, Esq., M.D., Civil Surgeon, 
Prince of Wales Island, 
To Richard Taylor, Esq. 
Dear Sir, Library, East India House, April 6, 1846. 
[Tue first notice of the species of Semnopithecus described in the 
accompanying essay by Dr. Cantor, is given in the ‘ Proceedings 
of the Zoological Society” for 1837, p. 14, by Mr. James Reid, 
who characterized it under the name of obscurus from a speci- 
men in the Society’s collection; the locality of the particular 
specimen exhibited was unknown. Temminck subsequently de- 
scribed a Semnopithec very concisely with the name of Semn. 
leucomystax, stating doubtfully that the S. obscurus of Reid might 
perhaps belong to the same species. See Verhandelingen over de 
Natuurlyke Geschiedenis der Nederlandsche Bezittingen : Mono- 
graphisch Overzicht van Semnopithecus, p.59,no.4. Mr. Mar- 
tin, in his ‘ Natural History of Quadrumana,’ gives a more de- 
tailed account of the external characters of Semnopithecus obscu- 
rus of Reid, or the Dusky Monkey, referring to some specimens 
brought from Singapore by Mr. Cuming, and presented by him 
to the museum of the Zoological Society, and also to a specimen 
in the Paris museum, adding, that no particular details of the ha- 
bits of this species had as yet been received ; science is therefore 
indebted to Dr. Cantor for the first satisfactory account of the 
habits and peculiarities of this monkey, and I submit this essay 
to your consideration as deserving perhaps a place in the ‘ Annals 
of Natural History.’ 
The ‘ Proceedings of the Linnean Society ’ for April 1, 1845, 
contain the specific character of the Semnopithecus halonifer, with 
a few remarks extracted from Dr. Cantor’s more detailed essay.— 
T. Horsfield. | 
Semnopithecus halonifer, Cantor. 
S. nitide cinereo-nigrescens; crista occipitis cana, abdomine subal- 
bido ; cauda subcinerea ; facie, auribus, manibus, pedibus, tuberi- 
