NORTH AMERICA AND THE WEST INDIES 123 



markably compressed anteroposteriorly, so that they are 

 much narrower than wide. In these characters it represents 

 a more advanced stage of development than Plagiodontia and 

 Isolobodon, in which the reentrant folds are still separate. 



In the excavations at the type locality carried on after the 

 preliminary work had disclosed the two jaws on which the 

 original account was based, a more extended search brought 

 to light abundant remains of this animal, permitting the more 

 detailed description in Miller's (1929a) second paper. Judged 

 from the material recovered this was the second most common 

 species brought in to the caves supposedly by the now extinct 

 giant barn owl. In a later report Miller (1929c) remarks that 

 no remains of this animal have as yet been discovered in the 

 various kitchen middens and cultural deposits in the Samana 

 Bay region; hence there is no real evidence that the species was 

 utilized by the aborigines as a food animal, though they may 

 have hunted it. In addition to the collection of 17 skulls 

 and more than 200 mandibles recovered from the cave deposit 

 at St. Michel, other fragments were secured at San Gabriel 

 near Samana Bay, from a deposit evidently made by owls, as 

 in the case of the former. Equally interesting is the discovery 

 of six mandibles, all of immature individuals, in cave deposits 

 on Gonave Island off southern Haiti, indicating its wide 

 dispersal in Hispaniola in older times (Miller, 1930). The 

 animal was apparently unknown to the early Spanish explorers, 

 nor is it possible to tell whether it survived later than the early 

 years of white occcupation. 



HETEROPSOMYS INSULANS Anthony 



Hcteropsomys insulans Anthony, Ann. New York Acad. Sci., vol. 27, p. 202, Aug. 9, 



1916 ("Cueva de la Ceiba, near Utuado, Porto Rico"). 



FIGS.: Anthony, 1916, pi. 11, figs. 2-3; pi. 12, figs. 1-5 (skull); 1918, p. 407, fig. 40, 

 A-D (skull), p. 410, fig. 41 (vertebrae). 



HOMOPSOMYS ANTILLENSIS Anthony 



Homopsomys antillensis Anthony, Bull. Amer. Mus. Nat. Hist., vol. 37, p. 187, Jan. 29, 



1917 ("Cave . . . near Utuado, Porto Rico"). 



FIGS.: Anthony, H. E., 1917a, pi. 5, fig. 8 (rostrum); 1918, p. 407, fig. 40, E (skull). 



These two species are known from cranial parts chiefly 

 excavated, with remains of other animals, in caves of Puerto 

 Rico. In all likelihood they were contemporaneous with 



