O76 e MONOPHYLLUS, 
longer than interfemoral membrane; caleaneum rudimentary; inner 
incisors larger than outer; lower incisors small; zygomatic arches 
present, 
Fig. 143. MONOPHYLLUS PORTORICENSIS. 
No, S6as8 U.S, Nat. Mus, Coll, 
o's times nat, size, Nose enlarged § times, 
KEY TO THE SPECIES. 
A. Size small; second upper premolar with postero- PAGE 
internal lobe well developed. ..............d M. portoricensts 677 
B. Sige large; second upper premolar with postero- 
internal lobe rudimentary. 
a. No space between first and second upper pre- 
ER Pie ny M. plethodon 677 
b. A-space between first and second upper pre- 
PNOIGTS Gre a vee 
molars, 
a.’ Bony palate narrow, strongly arched. 
Ale v Sntlan eels & Sk OS ee 
b."" -Porearin $4 oni sic a wee .. MM, clinedaphus 678 
es 
a Forearm 42 mm... 
b.’ Bony palate broad, slightly arched. 
a.’ Size small, total length, 67 mm .. ...M. cubanus 678 
b.” Size large, total length, 72.5 mm........M.redmant 679 
/ 
—var = ae 
