544 MINUTE LEMURS CHAP.’ 
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 
Fic, 260.—Smith’s Dwarf Lemur. Microcebus smithii. x 3. 
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 
Fic. 261.—Mouse Lemur. Chirogale coquereli. x $. 
will have to be separated from its close association with Galago. 
For the present, however, it is left im the more generally accepted 
position. 
Microcebus contains the most minute among the Lemurs.  d/. 
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 
