1908.] 



DR. KNUD ANDERSEN ON BAT>S. 



277 



practicall)^ alike, when due consideration is taken of the fact that 

 the number of individuals examined from each i-egion is not the 

 same. The external average measurements of the nine individuals 

 fi-om Ecuador, S. and Central Colombia, are somewhat larger 

 than in the two other sections, but there is no I'easonable doubt 

 that this is quite accidental ; in Paraguay individuals the dif- 

 ference between the absolute maximum and minimum of the 

 length of the forearm is 9*5 mm., in the still lai-ger Brazilian 

 series 11 mm.; so that it is not very likely that in individuals 

 from Ecuador and Colombia the amount of variation in this respect 

 should be 4-5 mm. only ; all of these latter individuals evidently 

 happen to be rather large, none of them representing the mini- 

 mum size, and consequently the average, as calculated from this 

 series, is also above the true normal. 



Measurements of Artibeus jamaicensis lituratus. 



Skull, total length, to front of c . . . 



„ mastoid width 



„ width of brain-case 



„ zygomatic width 



„ maxillary width across m' 



,, across cingula of canines... 



Mandible, to front of iuc 



Upper teeth, c-m- 



Lower teeth, c-ma 



Ear-conch, length, inner margin 

 „ length, outer margin 



„ width 



Tragus, length 



Lancet, length 



„ width 



Horseshoe, width 



Forearm 



Pollex 



3rd metacarpal 



Ill' 



IIP 



II13 



4th metacarpal 



IVi 



IV- 



5th metacarpal 



VI 



V- 



Interfemoral 



Lower leg 



Foot, with claws 



Calcar 



Paraguay. 



12 adults, 

 6 skulls. 



Brazil 



(detailed localities 



see p. 274). 



20 adults, 



19 skulls. 



Ecuador, 

 S. & C. Colombia. 



9 adults, 

 8 skulls. 



MiN. Max. Med. Min. Max. Med. 1 Min. Max. Med 



mm. 

 31-5 

 16-3 

 13-8 

 18-8 

 13-2 



8-6 

 21-2 

 10-7 

 11-8 

 16-7 

 23 

 15 



7 

 11 



7 



8-2 

 64 

 16-5 

 o5"5 

 18-2 

 30-8 

 18 

 55 

 17 

 19 

 57 

 12-7 

 15 

 18-5 

 25 

 17-8 



7 



mm. 

 33 

 17-2 

 14-2 

 20 

 14-7 



9-2 

 23-7 

 12 

 13-3 

 18 

 26 

 17 



8-8 

 12 



9 



9 

 73-5 

 17-8 

 67-5 

 24-8 

 40 

 21-7 

 667 

 21 

 24 

 70 

 15-8 

 19-5 

 21-5 

 27-8 

 20-5 

 10 



mm. 

 32-1 

 16-9 

 141 

 19-2 

 14-1 



9 

 22-3 

 11-6 

 12-6 

 17-3 

 24 

 16-1 



7-8 

 11-3 



8-1 



8-8 

 70-4 

 17-1 

 63-9 

 21-9 

 36-1 

 19 

 62-5 

 18-6 

 22-5 

 65-1 

 14-4 

 17-6 

 20 

 26-2 

 18-7 



mm. 

 30-5 

 16-8 

 13-8 

 18-8 

 13-6 



8-8 

 21-7 

 10-8 

 12"2 

 16-5 

 22-5 

 15 



7-2 

 10-8 



7 



8 

 65 

 15'5 

 58-2 

 192 

 32-5 

 16-8 

 56-8 

 17 

 19-8 

 58 

 13 

 15 

 15 

 24-3 

 17 



mm. 



34 



18 



15 



20-2 



15-2 



10 



23-5 



12-2 



137 



17-8 



24 



17 

 7-8 



11-5 

 8-5 

 9-5 



76 



18 



69 



25 



41 



21-2 



67 



20-8 



25-2 



70 



16 



197 



20 



28 



20 



10 



■:^ 



mm. 

 32-1 

 17-3 

 14-1 

 19-4 

 14-5 

 9-3 

 227 

 117 

 12-9 



mm. 

 31-2 



16-8 

 13-8 

 19-5 

 13-3 

 87 

 22 

 11-2 

 12 



70-1 70-5 

 16-61 14-2 

 637 ! 65-5 



2r8 '; 22 



35'5 36'5 

 18-6 i 18 

 62-5 ] 63 

 19 \ 18-5 

 22-3 \ 22-2 

 64-4! 65 

 14-4. 14-2 

 17-4 I 17-2 



26-9 1 26 



18-5 17-2 



8-5 1 8 



mm. 



33 



17-5 



148 

 19-6 

 14-2 

 97 

 22-3 

 12 

 13 



75 



17 



68-2 



24-5 



41 



21 



67 



21 



25 



70 



16 



20 



27 

 20 

 10 



mm. 

 32 

 17-3 

 14 

 19-4 

 13-9 

 9 

 22-2 

 11-5 

 12-5 



73-3 

 16-4 

 66-5 

 23-2 

 38-5 

 19-3 

 65-2 

 197 

 23-9 

 67-9 

 16-6 

 18-8 



267 

 18-3 



