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, 

 &c. occurs as before, and a second spore is formed adjoining the 

 first. The formation of a third spore involves a similar chain of 

 phsenomena. 



I am. Gentlemen, your very obedient servant, 



G. H. K. Thwaites. 



XLV. — On a species of Semnopithecus from the Peninsula of 

 Malacca, By Theodor Cantor, Esq., M.D., Civil Surgeon, 

 Prince of Wales Island. 



To Richard Taylor ^ Esq. 



Dear Sir, Library, East India House, April 6, 1 846. 



[The first notice of the species of Semnopithectts 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. 

 leucomystaxy 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- 



