226 bulletin: museum of comparative zoology. 



separated from the first and the third by a distinct space, whereas in 

 the Jamaican species the first and third lower premolars are in contact, 

 and the second is forced quite out of the tooth row. The type locality 

 is near Pueblo Viejo, Bayamon district, Porto Rico. 



Pteronotus davyi Gray. 



Pteronotus davyi Gray, Mag. Zool. Bot., 1838, 2, p. 500. 



So far as present knowledge goes, this species, though common in 

 Brazil, Venezuela, and Trinidad, is unknown in the West Indies 

 except in the island of Dominica, whence it has been recorded by 

 several writers (Thomas, Ann. Mag. Nat. Hist., 1892, ser. 6, 10, 

 p. 410; Miller, Proc. Biol. Soc. Washington, 1902, 15, p. 155; Rehn, 

 Proc. Acad. Nat. Sci. Phila., 1904, p. 254). There is also a specimen 

 in the Museum of Comparative Zoology from Dominica, taken in 

 1906, by Mr. A. H. Verrill. 



Mormoops blainvillii Leach. 



Mormoops blainvillii Leach, Trans. Linn. Soc. London, 1820, 13, 

 p. 77, pi. 7. 



The type locality of this bat is Jamaica, to which it seems confined. 

 Mr. Rehn (1902a), in his review of the genus, mentions specimens from 

 Moneague, St. Ann, and Kingston. Tomes (1861, p. 65) records it 

 from Freeman's Hall and Sportsman's Cave. 



On the continent, this genus is represented throughout Mexico 

 and Central America by a single, somewhat larger, and quite different 

 species (M. megalophyUa). If the insular races are to be derived from 

 continental stock by wav of Yucatan and Central America, it is evident 

 that much differentiation has taken place since the continuity of the 

 land areas. On the island Curacao, off the coast of northern South 

 America, is a form so slightly differentiated from M. megalophyUa 

 that it is considered by Rehn to be merely a subspecies. The Antil- 

 lean representatives, however, more nearly resemble each other than 

 they do their continental relatives, indicating perhaps that these 

 islands have been connected at a period later than their separation 

 from the mainland. 



Mormoops blainvillii cinnamomea (Gundlach). 



L[obostoma] cinnamomeum Gundlach, Arch. f. Naturg., 1840, 6, 

 pt. 1, p. 357. 



