1902.] NATURAL SCIENCES OF PHILADELPHIA. 165 



tooth, cusps of the first and third of equal length, longer than the 

 second ; molai"s with five cusps, the anterior one low and not promi- 

 nent, the posterior four tall and sharp. 



Measurements. — Average of two Jamaican specimens: Lenglh of 

 head and body, 50 mm.; head, 15.7; tragus, 4.2; foreai-m, 44.5; 

 thumb, 6.2; third finger, 81.5; tibia, 20; calcaneum, 19.5; foot, 

 8.1; tail, 28.3. 



Remarks. — This species is not liable to be confused with any 

 other form except the subspecies cinnamomea, which is distin- 

 guished by the outline of the first upper premolar. From M. 

 megalophijlla and its subspecies this species is immediately distin- 

 guished by the form of the ears, the chin-lappet and the labial 

 folds. 



Specimens Examined. — Two alcoholic specimens and one skin: 

 Jamaica (Coll. Biological Survey) ; Moneague, St. Ann, Jamaica 

 (Coll. Biological Survey) ; Kingston, Jamaica (skin) (Coll. U. S. 

 Nat. Mus.). 



Mormoops blainvillii cinnamomea (Gundlach). 



1839. Mormops Blainvillii Gray (not of Leach), Ann. Nat. Hist., 

 IV, p. 3. 



1840. L[obostoma'] cinnamomeiim Gundlach, Wiegmann's Archiv. 

 fiir Naturgeschichte, VI, bd. F, p. 357. 



1873. 3Iormops Blainvillii Peters, Monatsber. k. preuss. Akad. 



Wissensch. Berlin, p. 359 (part). 

 1873. M[ormops] Blainvillii Gundlach, Anales Socied. Esp. Hist. 



Nat., I, cuaJ. 3, p. 244. 



Type Locality. — Casetal St. Antonio el Fuudador, Cuba. 



Distribution. — Cuba, San Domingo and Mona Island (in the 

 Mona Island passage between San Domingo and Porto Rico). 



General Characters. — Similar to the Jamaican J/, blainvillii, but 

 the fii-st upper premolar attains its greatest thickness posteriorly, 

 the outline of the toolh being subconoid with the apex directed 

 forward. 



Membranes, ears and olher external characters as in Mormooj)S 

 blainvillii. 



Teeth. — The fir^^t upper premolar greatly expanded posteriorly 

 on the internal portion, the cingulum forming a heavy raised border 

 to a deeply impressed valley; the whole structure giving the tooth a 

 subconoid or subpyriform outline, the apex being formed by the 

 anterior border of the cingulum. 



Color. — General tint walnut-brown above, ecru-drab beneath, 



