264 



DR. KNUD ANBERSEN ON BATS. 



[Apr. 7, 



Range. — Yucatan, including the coast islands. The only speci- 

 men examined from Belize is referable to A. j. yitcatanicus. 

 Certain specimens from Campeche come veiy near to this race. 



J. A. Allen's A. yucatanicus, 1904. — In 1897 {l. s. c), Allen and 

 Chapman recorded four specimens of " Artibeus jyerspicillatus " 

 [A. jamaicensis Leach; A. carpolegits Gosse) from Chichen Itza, 

 Yucatan. In 1904 [I. s. c), Allen selected one of these examples 

 as the type of a new species, A. yucatanicus . In size and colour, 

 he writes, it resembles "the West Indian forms of the genus, 

 especially A. parvipes of Cuba, from which it is not readily distin- 

 guishable"; "four skulls oi A. pa7'vipes measure the same [viz. 

 27 mm.] in total length, but a little less in zygomatic width." 

 Allen does not enter into further details as to the dijfferential 

 characters of the new species. (The forearm measures, according 

 to Allen, 55 mm., the third metacarpal 57 mm. ; the latter must, 

 of course, be a misprint, if the former is correct.) 



Measureme7its of K. j. parvipes and yucatanicus. 



A. J. parvipes. 

 25 adults, 

 12 skulls. 



A. j. yucatanicus. 

 U adults, 

 12 skulls. 



MiN. Max. 



ram. mm. 



Skull, total length, to front of c . . . 26 27-3 



„ mastoid width 14 15 



„ width of brain-case 11'8 12'8 



„ zygomatic width 15'5 17 



„ maxillary width, across m^ ! 11'3 12'3 



„ acrosscingulaof canines ...I 7"2 8 



Mandible, to front of inc '18 19 



Upper teeth, c-m2 9-3 10 



Lower teeth, c-m 3 . 10-2 107 



Ear-conch, length, inner margin . ]3'2 lo'o 



„ length, outer margin . I 19 21"5 



,, width 13 15"5 



Tragus, length 6-2 7-2 



Lancet, length ' 8'5 10 



width 6 7 



Horseshoe, width 6"2 8 



Forearm 54 60 



Pollox 12-5 14-5 



3rd metacarpal 48 55 



IIJi 13-5 18 



IIP 24-5 29-5 



IIP ' 12-8 16-8 



4th metacarpal 47-2 53-8 



IVi 12-2 15-8 



IV2 16-2 20-5 



5th metacarpal 48'2 56 



VI ' 10-7 12-2 



V2 12 15 



Interfemoral 10 17 



Lower leg 207 23 



Foot, with claws 14 16'8 



Calcar 5-2 7-3 



