282 



DR. KNUD ANDERSEN ON BATS. 



[Apr. 7, 



leave the identification unsettled, a careful examination of the 

 skull and teeth will, with rare exceptions, decide the matter. It 

 is a case parallel to that of Hipposiderris caffer caffer and H. c. cen- 

 tralis in British and German East Africa * ; two very well marked 

 modifications of one common type, difiering in size only, and 

 originally, no doubt, occupying quite separate areas, but the 

 latter has in the course of time spread over a part of the region 

 of the former, as has -4. j. jmlmiarum over that of A. j. javiaicensis; 

 in the one instance as in the other the races are, however, on 

 careful examination almost always separable, even when found 

 together on the same spot. 



Outram Bangs's A. femurvillosu'm, 1899. — Type locality : La 



Measurements of Artibeus jamaicensis palmarum. 



Venezuela 



(Macuto, Caripe, 



Tachira). 



15 adults, 

 10 skulls. 



Trinidad, Central America | Mexico 

 St. Vincent I(Panarna,CostaRica, (Vera Cruz, 



Island. 



4 adults, 

 3 skulls. 



Nicaragua, 



Guatemala). 



20 adults, 



15 skulls. 



Jalisco, 

 Oaxaca). 

 4 adults, 

 3 skulls. 



MiN. Max. Med. 



i mm. 

 Skull, total length, to front of c . 30 



mastoid width 1 16'2 



13 



17-1 



13 



mm. 

 32 

 17-5 

 14 

 20-3 

 14 

 9 

 22-5 

 11-8 

 12-7 

 17-7 

 24-0 

 16-3 



width of brain-case 



„ zygomatic width 



„ maxillary width across m^ 



,, across cingula of canines ... 8'5 



Mandible, to front of inc 20-8 



Upper teeth, c-m^ 10'5 



Lower teeth, c-nig 11-6 



Ear-conch, length, inner margin .. 16 



„ length, outer margin ... 21 



,. width 1-5 



Tragus, length 7-8 8'5 



Lancet, length 9-8 12 



width 7 8-8 



Horseshoe, width 8-2 9'8 



Forearm ;... 68-2 75-8 



Pollex 15 17-7 



3rd metacarpal 61-7 685 



mi 21 24-8 



IIP 31 39-8 



IIP 16-8 20-2 



4tli metacarpal 59"7 66'5 



IVi 17-8 21 



IV2 20 24-2 



5th metacarpal 61"7 69 



VI 12-8 16 



V2 15-2 19-8 



luterfemoral 17'5 21 



Lower leg | 24 27 



Foot, with claws j 17 19'8 



Calcar ; 7-7 10-2 



mm. 

 31 

 17 

 14 

 18-9 

 13-4 



8-9 

 21-5 I 

 11-2 I 

 12-2 

 lfi-6 

 23"2 

 15-5 



8 

 11 



7-9 



8-9 

 71 

 171 

 64-6 

 22-8 

 36-4 

 18'2 

 63-3 

 19-1 

 22-5 

 65-8 

 14-8 

 17-8 

 19-2 

 25-5 

 18-4 



9-1 



Min. Max. 



mm. mm. 



. 31 



... 16-2 



... 13-8 



... 20 



14-6 



9 

 22-2 

 11-8 

 12-8 

 18 

 25 

 16-5 



MiN. Max. Med. 



14 



8-1 



11 

 12 

 16 

 23 

 16 



7 

 10 



7-5 



11-7 



8-5 



8-8 9-2 



67-0 72-5 



15-2 17-5 



60 68 



19'2 23-2 



33 38-2 



17-7 21 



58-5 66 



17-5 19'2 



20-8 24 



61-8 68-5 



12'8 16 



147 19'2 



17 18 



25 27-5 



17-8 19 



7-5 9-7 



mm. 



29-7 



15-8 



13-6 



18 



13 



8-2 

 20 

 10-2 

 11-7 

 15-5 

 21 

 15'2 



7-7 

 10 



7 



8-3 

 64 

 15 

 58-8 

 20 

 33 

 17-2 

 58 

 17-2 

 21 

 59-5 

 14-2 

 16-8 

 17 

 24 

 16-5 



7-2 



mm. 

 31-8 

 17-6 

 14-5 

 20 

 14 



91 

 22-6 

 11-2 

 12-7 

 17-3 

 26 

 17-7 



8 

 11-5 



8-8 



9-8 

 75 

 16-8 

 66-5 

 24 

 39 

 20-8 

 66-2 

 21-5 

 25-8 

 67-3 

 17 

 20 

 22 

 26-8 

 20 



9 



mm. 

 30' 6 

 16-8 

 14 

 18-9 

 ]3o 



8-7 

 21-4 

 10-9 

 12-2 

 16-7 

 236 

 16 



7'9 

 10'7 



7-9 



8-9 

 70-6 

 16-1 

 63-8 

 22-4 

 36-7 

 18-7 

 62-6 

 19 

 23-3 

 64-5 

 14-7 

 18-3 

 19-6 

 25-6 

 18 



* Knud Andersen, Ann. & Mag. N. H. (7) xvii. p. 281 ; March 1906. 



