1908.] DR. KNUD ANDERSEN ON BATS, '283 



Ooncepcion, Sierra Nevada de Santa Marta, Colombia, 3000 feet. 

 — ^The essential points in the original description are these : — 

 "About the size of A . pahnarum, differing irom. that species in 

 having but one pair of face stripes (no cheek stripes) .... these 

 stripes narrow and not very conspicuous. The new species differs 

 from all others of the genus I have seen in having the upper 

 surfaces of legs, feet, and interfemoi'al membrane clothed with 

 short hir. In the allied species these parts are naked." Length 

 of forearm, metacarpals and phalanges not given by the author ; 

 it is unnecessary to quote the measurements of the skulls, as they 

 are precisely as in many A. j. palmaritm. — A. femur villosum 

 was half a year later (1900, l. s. c.) put down by Allen as a 

 synonym of "^. pcdmaruni." 



The colour characters given by Bangs need no comment ; they 

 are valueless for diagnostic purposes. The statement that the 

 upper surfaces of the legs, feet, and interfemoral are naked in 

 " the allied species," is a mistake; in all the specimens I have 

 seen of A. jamaicensis, of any race, they are hairy. Thus 

 nothing is left by which A. femur villosum can be discriminated 

 from A. j. palmarum. 



Artibeus jamaicensis pr^ceps K. And, 



1906. Artibetis jamaicensis frmce^s Knud Andersen, Ann. & Mag-. N. H. (7) xviii. 

 p. 421 (1 Dec. 1906).— Type locality; Guadeloupe, W. I. 



Diagnosis. — Similar to A. j. pahnarimi, but forearm and hand 

 averaging shorter. 



A. j. prceceps and palmiarum. — Individuals of A. jamaicensis 

 from Trinidad and St. Vincent Island are indistinguishable from 

 the continental A. j. palmarttm (or, if this form is not recognised, 

 from A.j. lituratus). From the Windward Islands between St. 

 Vincent and Dominica I have had no specimens. — In Dominica 

 and Guadeloupe A. j. palmiarum is replaced by the slightly dif- 

 fering A. j. prmceps. Three skulls of this race are practically 

 almost indistinguishable from the ordinary palmarum skull ; they 

 show a tendency to go slighty below the minimum size in the 

 large number of palmarum skulls examined, so that there can 

 scarcely be any doubt that, in a more extensive series, skulls of 

 prceceps will prove to average a little more slenderly bviilt. The 

 teeth will probably also average slightly smaller. There is a 

 similar indication of a decrease in the external dimensions, 

 especially noticeable in the length of the forearm and hand : in 

 the three adult examples of A. j. prceceps the forearm measures 

 60, 65*5, and 66-2 mm., in 43 adult examples of A. j. palmarum 

 the average length of the forearm is 70-9 mm., and none has the 

 forearm less than 64 mm. ; of the whole series of palmarum two 

 only (5 p. ct.) have the forearm less than 66'5 mm., whereas in all 

 examples of jjrceceps available the forearm falls short of that 

 length ; for further details (metacarpals, proximal phalanges, 

 tibiae) see table of measurements below, p. 284. — From the 



