(reolotjical Societif. - 1 1 



XXI 1 J. — Uintjnosix of a uiir Species of the. iienus 

 Lepitlolemur. By Dr. C. 1. Foksvth Ma.iou. 



Lcj>iJuleinur leiicojntSj t;[t, ii. 



Uppcrparts cliicHy cliiiicliilla-y;rey, with iin iiidi.stiiict 

 median brownish stripe, stretching from the region ot' the 

 neck to the root of the tail, in llie j^roximity of whicli it 

 becomes paler. Head above brown-grey, with a darker 

 median stripe ; cheeks and chin whitish. The ears encircled 

 by a broad ring of whitish hair. Neck, shoulder, and ujjper 

 parts of forearm pale rufuus. Breast and belly greyish 

 white; inner faces ot' fmc and hind limbs and heels pure 

 white. Tail greyish with rusty tinge, shorter than body 

 (2.30 : 290 millnn.j. 



Ears large, higln-r than broad, nicnibranous. 



Length of the upper molar and premolar series 17*5 millini. 



Length of the lower molar and jneniolar series {m. '6-p. 2} 

 IG millim. 



Hub. Fort Dauphin (S.E. Madagascar). 



Type in the British Museum. 



PROCEEDINGS OF LEARNED SOCIETIES. 



GEOLOGICAL SOCIETY. 



November 8, 18'J3.— W. H. Hudleston, Esq., M.A., F.K.S., 

 President, in the Chair. 



The followiag communication was read : — 



' Notes on the Occurrence of Mammoth-remains in the Yukon 

 District of Cauada and in Alaska.' iJy George M. Dawson, C.M.G., 

 LL.D., F.li.S., F.G.S. 



In this paper various recorded occurrences of Mammoth- remains 

 are noted and discussed. The remains are abundant in, it' not 

 strictly coutined to, the limits of a great uu glaciated area in the 

 North-western part of the North American continent ; whilst within 

 the area whieh was covered by the great ice-mass which the 

 Author has described as the Cordilleran glacier, remains of the 

 Mammoth are either entirely wanting or are very scarce. At 

 the time of the existence of the Mammoth the North American 

 and Asiatic land was continuous ; for an elevation of the land 

 suilicient to enable the Mammoth to reach those islands of the 

 Pering Sea where these bones have been found woxrld result in the 

 obliteration of Pering Straits. 



The bones occur, along the northern coast of Alaska, in a layer of 

 clay resting on the somewhat impure ' ground-ice formation ' which 

 gives indications of stratification ; and above the clay is a peaty 

 layer. The Author considers this ' ground-ice ' was formed as a 

 deposit when more continental conditions prevailed, by snow-fall on 



