This account of the last illness of my dear brother I received from his friends at Bangkok, particularly Dr. Campbell, to whom his two faithful servants hastened at once to give all details. His collections and other property they took to M. d’Istria, the French consul. Dr. Campbell kindly took charge of the manuscripts, and transmitted them to his widow in London. CONCLUSION. The family of M. Mouhot have already expressed their gratitude to those who were useful and kind to the traveller. The two good servants who remained with him to the last also merit their thanks; and, if these lines should fall into the hands of Phrai, I wish him to know how much gratitude and esteem we feel for him, and for his companion Deng. We wish them every happiness in return for their devotion to my dear brother. C. MOUHOT. [Illustration: SIAMESE MONEY.] APPENDIX. LIST OF THE NEW SPECIES OF MAMMALS DISCOVERED BY THE LATE M. MOUHOT IN CAMBODIA AND SIAM. BY DR. ALBERT GÜNTHER. _a._ MONKEYS. 1. _Hylobates pileatus._ MAMMALS. _Male._--BLACK: back of the head, back of the body, and front hind legs greyish; forehead and circumference of the black spot on the crown paler grey: hands and tuft of long hair round the organ of generation white. The three specimens in this state are all nearly of the same size, and appear to be adult. They only vary slightly in the size of the coronal spot, and in the extent of the white colour on the hands. _Female._--White: back brownish white, slightly waved; a large ovate spot on the crown, and a very large ovate blotch on the chest, black. These specimens are all of one size, and appear to be adult; three have the teats well developed. They vary in the size of the black chest-spot, and in the colour of the whiskers, thus:-- a, b. White: spot on the chest moderate, reaching only half-way down the abdomen: whiskers on side of face white. c. Brownish: spot on chest larger, reaching further down the abdomen: sides of the face black: a few black hairs on the throat. d. Brownish: side of the face, under the chin, and the whole of the throat, chest, and belly black: teats well developed. _Young._--Uniform dirty white, without any black spot on chest or head. All those varieties were found by M. Mouhot on a small island near Cambodia. (Described by Dr. J. E. Gray, Proc. Zool. Soc., 1861, p. 135.) _b._ CARNIVORES. 2. _Herpestes rutilus._ Grizzled chestnut-brown, variegated with black and white rings on the hairs: the head and limbs darker chestnut, with scarcely any hair, and very narrow white rings: lips and throat, and under part of the body, uniform duller brown; the nape with longer hairs, forming a broad short crest. Cambodia. (Gray, Proc. Zool. Soc., 1861, p. 136.) c. SQUIRRELS. 3. _Sciurus Mouhotii._