12 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 124 



dant bat at Cueva de Trujillo Alto. He reported a single fragmentary 

 fossil skull of this subspecies from Cueva Catedral near Morovis, and 

 we have examined a second skull from fossil or subfossil deposits in 

 Cueva de Clara in the same area. 



Schwartz and Thomas captured M. r. portoricensis in mist nets. 

 Those from near Utuado were collected in a net set in a "cafetal" 

 near the edge of the northern escarpment of the Cordillera Central at 

 an elevation of 1100 feet (336 meters) ; this area is mesic and heavily 

 forested. At a slightly higher elevation (1300 feet=397 meters) 

 Monophyllus was collected near Cidra; here the net was set in a wooded 

 ravine. In the southwestern portion of Puerto Rico, M. r. portoricensis 

 was taken from mist nets set in a ravine and across an unused road, 

 both in xeric woods and scrub near sea level. Since the Utuado and 

 Guanica areas represent the two climatic extremes in Puerto Rico, 

 M. r. portoricensis seems to tolerate a wide variety of habitats. 



We have no data on weights or parturition in M . r. portoricensis. 



Specimens examined. — Puerto Rico: 7.5 km east of Guanica, 1 d 1 , 

 3 9 (AS 5526-29); 17.7 km northeast of Utuado, 1 d", 1 9 (AS 5538- 

 39) ; Cueva de Trujillo Alto, Trujillo Alto, 3 & , 4 9 (AMNH 39433-35, 

 39444-47) ; Cueva de Fari, Pueblo Viejo, 3 & (AMNH 39430-32) ; 

 ca. 1 km northeast of Cidra, 1300 ft, 4 d\ 4 9 (AS 5509-12, 5669-70) ; 

 Cueva de Clara, near Morovis, 1 (KU uncataloged, fossil). 



Monophyllus plethodon Miller 



Monophyllus plethodon Miller, 1900, p. 35. 



Definition. — A species of Monophyllus characterized by a com- 

 bination of large size (total length 67-84), large hind foot (12-15), 

 long forearm (38.8-45.7), large skull (greatest length 21.4-24.2), 

 broad postorbital region (4.5-5.0), and the first and second premolars 

 separated by a diastema much less than half the length of the first 

 premolar. The pelage usually is brown, but a few specimens are pale 

 buffy tan. 



Monophyllus plethodon plethodon Miller 



Monophxjllus plethodon Miller, 1900, p. 35. [Type-locality: St. Michael's Parish, 

 Barbados.] 



Distribution. — Known only from Barbados (see fig. 1). 



Definition. — A subspecies of M. plethodon characterized by small 

 body size (total length 67 and 68 in two known specimens), short 

 forearm (38.8-41.0), small skull (greatest length 21.4-23.2), and 

 short toothrows (maxillary toothrow 7.2-7.8). 



Remarks. — We are somewhat reluctant to regard the Lesser Antil- 

 lean Monophyllus as comprising two subspecies. It is particularly 

 unfortunate that Barbados is the type-locality of M. plethodon since, 

 other than the holotype, we have examined only one specimen from 



