Chiromys, differ from the African forms by the fact that the tympanic ring "is completely enclosed by the bulla ossea, but without osseous connexion with the same." This character he thinks so important as to justify the inclusion of all the Mascarene forms in one group as opposed to another group consisting of the continental Lemurs. In this event Chirogale will have to be separated from its close association with Galago. For the present, however, it is left in the more generally accepted position.
Fig. 260.—Smith's Dwarf Lemur. Microcebus smithii. × ¾.
Fig. 261.—Mouse Lemur. Chirogale coquereli. × ½.
Microcebus contains the most minute among the Lemurs. M. smithii has a body only 5 inches long, the tail being another 6 inches. It occurs in Madagascar, and includes five species.
Opolemur, the Fat-tailed Lemur, was so called on account of a
