10. ATALA.PHA. 271 



Var. a {Atalapha frantzii). 

 Atalapha frantzii, Peters, MB. Mad. Berl. 1870, p. 908. 



This, whicli may be considered the tropical form of A. novehora- 

 censis, differs from typical specimens in the slightly smaller size of 

 the ears, the shorter and more pointed tragus, the naked margin of 

 the interfemoral membrane, and the shorter fur on the wing-mem- 

 brane behind the forearm. The extremities of the hairs on the 

 upper surface are brighter red, and scarcely (in some specimens not) 

 tipped with grey. 



The measurements agree very closely with those of specimens of 

 A. noveboracensis from North America ; the metacarpal bone of the 

 middle finger and the tibia appear to be proportionately slightly 

 longer. 



Hab. Central America (Guatemala ; Costa Eica) ; Brazil ; Chili. 



Var, /G {Atalapha pfeiff en). 

 Atalapha pfeifferi, Gundlach, MB. Akad. Berl. 1861, p. 152. 



Slightly larger than the preceding form, which it resembles in the 

 colour and distribution of the fur, which also thinly covers the inter- 

 femoral membrane posteriorly. It is chiefly distinguished by the 

 larger size of the small first upper premolar. 



Length, head and body 2"-l, tail l"-75, head 0"-65, ear 0"-5, 

 tragus 0"-3, forearm l"-75, third finger 3"-15, fifth finger 2"-15, 

 tibia 0"-8, calcaneum 0"-8, foot 0"-35. 



Hah. Cuba. 



Var. y (Atalapha varia). 



Nycticeius varius. Poeppig, Reise in Chile, i. p. 451 (1835). 

 Atalapha varia, Peters, MB. Akad. Berl. 1870, p. 909. 



This form is distinguished from A. noveboracensis by the much 

 larger size of the first upper premolar, and by the uniform black 

 colour of the wing-membranes. Neither of these characters are, in 

 my opinion, sufiicient in this family to found a species upon. The 

 size of the first upper premolar is very variable, and the intermediate 

 condition of this tooth is seen in the preceding variety. The yeUow 

 spaces along the finger and the dots observed in the wing-mem- 

 branes of A. nove oracensis are not always present in specimens from 



Length ("of an adult d in the coUection of the Berlin Museum), 

 head and body 2", tail 2", ear 0"-5, tragus 0"-28, forearm l"-6, 

 thumb 0"-35, third finger 3"-l, fourth finger 2' -5, fifth finger 2 , 

 tibia 0"-75, foot 0"-33. 



Eab. Peru, ChUi. 



„ ft ad ak Canada. !'• W. Malagan, Esq. [P.]. 



c' d ad sk New York. - Dnuumond, Esq. [P.]. 



' ad 8k New York. Purchased. 



