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Show 966 MR. ST. GEORGE MIVART ON THE LEMURID*. [Dec. 12, and Microcebus, though reposing mainly, if not exclusively, on a few cranial and dental characters. Perhaps, however, the newly described species M. coquereli* may furnish grounds for the abandonment of this distinction. I find in C. furcifer a distinct os intermedium and the ulnar condyle of the humerus perforated. There remain to be noticed the three forms described by Dr. Gray under the names (I) Galago minorf (or Lepilemur murinusX), (2) Cheirogaleus smithii§, and (3) Cheirogaleus typicus ||. The first of these, the skull of which has been figured in the 'Proceedings of the Zoological Society'4^, agrees completely with Dr. Peters's M. myoxinus, except in the reduplication of the palatal defects of ossification, and in a slightly less degree of backward prolongation of the palate. It also agrees with M. myoxinus in points by which that species differs from M. pusillus, and which have been enumerated above. The tarsus I have not been able to examine; but it, no doubt, is also similar. The two skins of Galago minor (my Microcebus minor) in the British Museum agree with M. myoxinus, and differ from M. pusillus, in the greater size of the ears; and Dr. Gray remarks**, "The figure of Dr. Peters agrees pretty well with our specimen; but the whole colour of the fur is rather darker, and the ears are larger." The latter difference is trifling indeed, considering the contraction of the ears in drying-a distortion the frequent occurrence of which, as also of its converse " stretching," Dr. Gray proceeds almost immediately afterwards to notice. M. minor, however, is very much less red than M. myoxinus, being a "pale grey," whereas the usual colour in the last-named species, according to Dr. Peters, is rusty brown; and this difference is so striking that for the present it will be better to treat these forms as specifically distinct. As regards Cheirogaleus smithii, the typical specimen (which is in the British Museum) differs from M. myoxinus and agrees with M. pusillus in the following points :-in the smaller size of the ears, and in having the first upper premolar rather less vertically extended than the second. It may therefore be the case that C. smithii is nothing else than M. pusillus (Le Rat de Madagascar)-and the more probably so, as Dr. Gray himself remarksff that Buffon's figure of that animal well represents his (Dr. Gray's) C. smithii. On the other hand, in C. smithii the upper incisors are as unequal as in M. minor or as in M. myoxinus. Dr. Gray describes the type of his G. smithii as being " pale bay,'' * Recherches sur la Faune de Madagascar, par M. H. Schlegel et M. Francois P. L. Pollen, (Leyden, 1867) p. 12, pl. 6. t Ann. and Mag. Nat. Hist. 1842, x. p. 257. | P. Z. S. 1863, p. 143. § P. Z. S. 1863, p. 143. || P. Z. S. 1863, p. 142. f 1860, p. 144, and 1864, p. 615. ** P. Z. S. 1863, p. 144. tl P. Z. S. 1863, p. 143 |