ALLEN: MAMMALS OF THE WEST INDIES. 183 



but three of the Antilles, and that it occurs here with other endemic 

 genera, may indicate that it is a survivor in these islands of a primitive 

 genus whose range was once more extensive. The present distribu- 

 tion of the five genera considered may thus indicate either that they 

 are survivors of an ancient fauna that was endemic in Antillea (in- 

 cluding the Greater and Lesser Antilles as a continuous land mass), 

 or that they reached these islands by one or more land bridges from 

 Central or South America after which their continental prototypes 

 became extinct. In either case it is probable that Phyllops and 

 Ariteus have become latterly differentiated from the Ardops stock, 

 in Cuba and Jamaica respectively. 



The bat fauna of the Greater Antilles is much better known than 

 that of the Lesser Antilles; nevertheless, it is undoubtedly true that 

 the number of genera is greater in the former. Of those known from 

 the Greater Antilles (including the Bahamas), but not from the Lesser, 

 are these fifteen: Chilonycteris, Mormoops, Otopterus, Lonchorhina, 

 Vampyrus, Phyllonycteris, Reithronycteris, Erophylla, Chilonatalus, 

 Nyctiellus, Eptesicus, Nycticeius, Lasiurus, Mormopterus, Eumops. 

 From this list are excluded Phyllops and Ariteus as being the repre- 

 sentatives on Cuba and Jamaica respectively of the genus Ardops, 

 just considered. The genus Lonchorhina is known from three speci- 

 mens, one from Venezuela, one from New Providence, Bahamas, 

 and one without locality but probably the Lesser Antilles. 



The genera Peropteryx, Pteronotus, and Myotis are as yet known 

 in the West Indies from the Lesser Antilles only, which they have 

 evidently reached from South America; for these island forms are 

 closely allied to those of that mainland and Trinidad, or are identical 

 with them. The genus Glossophaga is represented in the southern- 

 most Lesser Antilles by the species longirostris of northern South 

 America; while in the Greater Antilles there is in Jamaica what is 

 probably a race of G. soricina. There is evidence that the latter race 

 also occurs in the Bahamas. The South and Central American 

 species Artibeus planirostris is also represented in Grenada by a local 

 race, grenadensis, evidently allied to that of the neighboring mainland. 

 It is thus evident that these bats of ,the Lesser Antilles are of South 

 American origin. The genera of the Greater Antilles will be consid- 

 ered in further detail. 



The genus Chilonycteris is found in Jamaica, Cuba, San Domingo, 

 and Porto Rico, in each of which there occur together the two species 

 C. macleayii and C. parnellii, except in San Domingo where the latter 

 has not yet been collected. There can be little doubt of its presence 



