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Show 1900.] MAMMALS FROM SIAM. 193 backwards beyond the premaxillae, and the pterygoids are large and prominent. Dimensions of type (in the flesh) :- Head and body 464 mm.; tail 577 : hind foot 85 ; ear 50. Skull-greatest length 78*3 mm.; basilar length from henselion 64 ; zygomatic breadth 53-5 ; length of nasals 25-5; width ^of nasals anteriorly 16 ; width of nasals posteriorly 7. Hab. Siam. Type. B. M . 98.10.5.41. d ad. Hoi Sritepe, Chingmai, 10th April, 1898. I have great pleasure in naming this fine species after Mr. Lyle, who has collected so carefully and thoroughly in the midst of his other duties, and has generously presented tbe results of bis labour to the Museum. There is no risk of confusing this species with any of the preexisting ones. It is allied to the group of PP. oral, phillipensis, and eineraceus, but its larger size and red underparts distinguish it at a glance. The skull of the Burmese P. einer aceus, Blyth, nearly equals that of the present species in length, but is not so deep and round, conforming in general type with that of the Indian specimens. Its nearest ally is P. yunnanensis Anderson, from which it is distinguished by its hoary back and uniform chestnut underparts, besides other minor differences. Mr. Lyle got a second specimen, also an adult male and from the same locality, which closely resembles the type. The bases of the hairs of the back are not so rufous, and below there are more white tips. 8. SCIUROPTERUS PHAYREI Blyth. Nan. a-b. d 2 ad. sk. 22nd July, 1897. e. 2 ad. sk. 16th Sept. 1897. All three specimens are slightly larger than the average, but do not differ in any other respect. 9. RATUFA GIGANTEA (Maccl.). Nan. a. d ad. sk. 10th April, 1898. 10. SCIURUS FINLAYSONI (Horsf.). Sokotai. a, b. d d ad. sk. 17th & 20th Jan., 1898. Bau Mu, Siang Hai. c, d. 2 2 ad. sk. 8th Feb., 1898. Memoh, Lakon, Phine Road. e,f. 2 2 ad. sk. 24th Aug., 1898. Phitsamuloke on Menam R. g-'k. d d, 2 2 ad. sk- 6th June, 1898. Pichit. I, m. 2 2 ad. sk. 7th June, 1898. Between Pichit and Pakuampo. n-p. d , 2 2 ad. sk. 9th June, 1898. Ban Bu Nok, Menam R. o. d ad. sk. 9th June, 1898. |