MAMMALS FROM ENGANO 109 



convinces me without a shadow of doubt that the Engano bat, 

 which will remain available to naturalists in the Museo Civico of 

 Genoa, is the same in all essential respects as the Javan one, and 

 I am glad to have this opportunity of recording the fact before 

 the final disintegration of Plorsfield's type. From V. macrotis , 

 of which 3 specimens, one a topotype (^) from near Padang , 

 collected by Dr. Beccari, a second likewise from Sumatra, and a 

 third from Pulo Nias, are also before me on loan from the same 

 Museum, this Engano specimen only differs by having its wings 

 brown, as in ordinary species of Vesperugo, while V. macrotis, 

 as pointed out by Modigliani, has them white or whitish. In all 

 other respects, in the shape of the ears, in the broad sub-cre- 

 scentic form of the tragus , in the remarkable shortness and 

 breadth of the muzzle, and in the proportions of the teeth, the 

 two agree perfectly, and it is probable that the colour of the 

 wings is a character on which but little stress can be laid. In 

 fact even among the small series above mentioned there is some 

 variation, the second Sumatran one having wings but little paler 

 than the general body colour. 



Under these circumstances it would appear to be best to con- 

 sider, as Dobson did, V. macrotis as a synonym of V. imbricatus ; 

 should hov/ever the colour of the wings prove of sufficient 

 constancy to necessitate the separation of the two, V". macrotis 

 will be the name for the white-winged Sumatran and Nias 

 form, and V. imbricatus for the brown-winged one from Java 

 and Engano. 



10. Emballonura semicaudata, Peale. 

 a-d. 4 cf^9. Bua-Bua. 



e. </•. Malaconni. 



11. Wlus rattus, L. var. 



a. 9. Pulo Dua, July 1891. 

 Mammae 3 — 3 = 12. 



p. l. S. 1893, p. 241 



