no. 3635 MONOPHYLLUS — SCHWARTZ AND JONES 5 



Key to Living Species and Subspecies of Genus Monophyllus 



1. Upper premolars separated by diastema equal to one-half or more of length 



of first premolar 2 



Upper premolars crowded, separated by small diastema less than half length 

 of first premolar 4 



2. Maxillary toothrow more than 7.5 mm 3 



Maxillary toothrow less than 7.4 mm M. r. portoricensis 



3. Greatest length of skull 22.8 mm or more M.r. redmani 



Greatest length of skull 22.4 mm or less M.r. clinedaphus 



4. Forearm shorter (38.8-41.0 mm); maxillary toothrow shorter (7.2-7.8 mm). 



M. p. plethodon 

 Forearm longer (40.1-45.7 mm); maxillary toothrow longer (7.8-8.5 mm). 



M. p. luciae 



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Figure 1. — Distribution of Monophyllus in the West Indies (M. redmani=\\nes; M. 

 plethodon = stippling): 1, M. r. redmani (vertical lines); 2, M. r. clinedaphus (horizontal); 

 3, M. r. portoricensis (diagonal); a, M. p. plethodon (heavy stippling); b, M. p. luciae 

 (medium); c, M. p.frater (open). 



Monophyllus redmani redmani Leach 



Monophyllus redmani Leach, 1821, p. 76. [Type-locality: Jamaica.] 



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



Definition. — A subspecies of M. redmani characterized by large 

 body size (total length 73-SO, mean 76.1) but relatively short forearm 

 (37.6^L1.0, mean 40.2), large skull (greatest length 22.8-23.9, mean 

 23.3) with broad postorbital and mastoid regions and zygomata, and 

 long toothrow. The color varies from dark brown to pale brown; 

 there is no obvious dichromatism. 



Remarks. — Monophyllus r. redmani is the largest subspecies of 

 the species and is readily separable from other subspecies by the 



