316 PROCEEDINGS OF THE ACADEMY OF [1898. 



LIST OF BATS COLLECTED BY DR. W. L. ABBOTT IN SIAM. 

 BY GERRIT S. MILLER, JR. 



During the year 1896, Dr.'W. L. Abbott made an extensive col- 

 lection of mammals in the State of Trong, Lower Siam, a region 

 whose fauna has hitherto been practically unknown. The collection, 

 which Dr. Abbott has presented to the United States National Mu- 

 seum, includes sixty-one bats, all but six of which were sent to 

 Washington in formalin. Eleven species are represented. Three 

 of these prove to be new, while several others are of special interest. 

 Considerable time must elapse before it will be possible to prepare a 

 complete account of Dr. Abbott's Malayan collections. Meanwhile 

 it seems advisable to publish a list of the bats that he has thus far 

 taken, and the following is printed here by permission of the 

 Secretary of the Smithsonian Institution. 



Pteropus medius Temminck. 



One skin (9 young adult, No. 83,277) taken on April 15, 1896 

 I refer with some hesitation to this species. Its measurements are 

 as follows : head and body, 260 j 1 expanse of wings, 1,296 j 1 forearm, 

 175 ; thumb (with claw), 75 ; second finger, 127 ; third finger, 315 ; 

 fourth finger, 246 ; fifth finger, 230 ; tibia, 85 ; foot (with claws), 55 ; 

 ear from meatus, 39 ; ear from crown, 37 ; width of ear, 22 ; skull : 

 basal length, 167 ; basilar length (Hensel), 164 ; palatal length, 39 ; 

 palatal width (anterior end of first molar), 13.4 ; zygomatic breadth, 

 36; breadth across postorbital processes,28; length of nasals, 20; great- 

 est breadth of nasals, 6 ; maxillary tooth row (exclusive of canine), 

 20 ; crown of first molar, 6.6x4 ; canine at level of cingulum, 4x3.2 ; 

 greatest length of mandible, 56 ; depth of nrandible at anterior base 

 of first molar, 6.6 ; depth of mandible through angular and coronoid 

 processes, 24 ; mandibular tooth row (exclusive of incisors and ca- 

 nine) 27 ; crown of first lower molar, 6x3.4 ; lower canine at level 

 of cingulum, 2.8x3. 



Cynopterus angulatus sp. nov. 



Type. — Adult $ (in alcohol), No. 83,569, United States National 

 Museum, Trong, Lower Siam, collected in 1896 by Dr. W. L. Abbott. 



1 From fresh specimen by collector. 



