1908.] DR. KNUD ANDERSEN ON BATS. 261 



Artibeus jamaicensis parvipbs Rehu. 



1828. PhiiUostoma Jamaicense LeacTi, Horsfield, Zool. Jouru. iii. (April to July, 

 1827) pp. 238-40. — Macleaj''s specimens from Cuba. 



1872. ?AHibeus perspiccilalime (sic), C. J. Mayuard, Bull. Essex Inst. iv. no. 10, 

 p. 144 (Oct. 1872).— Key West, Florida. 



1878. Artibetcs perspicillatus (partim, not L.), Dobsou, Cat. Chir. Brit. Mus . 

 pp. 519-20. 



1878. Artibeus viacleayii Dobson (from Gray's MS.), op cit. p. 520, speci- 

 mens h-k. — Cuba. — Nomen nudiim. 



1902. Artibeus parvipes Rehn, Proc. Ac. N. Sci. Philad. pp. 639-40 (12 Oct. 1902) , 

 — Tj'pe locality : Santiago de Cuba. 



Diagnosis. — The smallest form of A. jamaicensis: zygomatic 

 width of skull 15-5-17 mm. (average 16-1); maxillavy tooth-row 

 9-3-10 mm. (average 9-7) ; forearm 54-60 mm. (average 56-8). 



General characters. — The angular emargination between cusps 

 5 and 7 of m" is generally as well marked as in any A. x>lccni- 

 rostris. The coloration of the fur of the upper side is generally of 

 the dark type, but light-coloured individuals occasionally occur. 

 The facial stripes are usually obsolete or faint. 



A. j. parvijMs -And yucatanicus. — There is only a rather small 

 average difference between A. j. parvipes and A. j. yibcatanicus. 

 The skull of parvipes is generally a trifle smaller (total length 

 26-9 mm., as against 27-4 mm. in yucatanicus) and more deli- 

 cately built (zygomatic width 16-1 mm., against 16-8 mm.); the 

 difference in the size of the teeth is infinitesimal (maxillary tooth- 

 row 9-7 mm., against 9'9 mm.). The forearm and metacarpals 

 of parvipes average 2-5 to 3 mm. shorter than in yucatanicus ; 

 also the phalanges, the tibia and foot average a little shorter. 

 (See the detailed measurements, p. 264.) Being in every respect, 

 save their average dimensions, perfectly similar, A. j. parvipes, 

 and yucatanicus are, in many cases, practically indistinguishable, 

 if the precise locality in which the specimens were obtained is 

 unknown. 



A. j. parvipes Sindjamaiceiisis. — Although there is no absolute 

 difference between A . j . jxorvipes und j. jamaicensis, the former is 

 as a rule easily distinguished by its smaller and slenderer skull 

 and smaller teeth. Externally there is the same average difference 

 in dimensions between ^jarvipes and jamaicensis as between 

 2)arvipes and yucatanicus. 



Sptecimens from different localities. — There is no difference 

 between examples from Eastern and Western Cuba. 



Supjyosed occurrence at Key West, Florida. — While at Key West 

 Island, south of Florida, in the early winter of 1870, Mr. C. J. 

 Maynard watched several large bats flying about the city ; the 

 single specimen secured has since been lost, but a drawing made 

 by Maynard enabled the late Dr. Harrison Allen to identify the 

 species as " Artibeus p)^'>'spicillatus Linne." * The Key West 

 bats, Maynard writes, " closely resembled in flight a species 

 which I had seen in Northern Florida two years before." If 



* Gerrit S. Miller, Jr., Proc. Bost. Soc. N. H. vol. xxviii. no. 7, p. 214, March 

 1898. 



