Collection of Bats from Paraguay. 441 
Dimensions of the type, measured in the flesh :— 
Forearm 46 millim. (other specimens 44-46). 
Head and body 90; tail 38; spread 351. First finger, 
metatarsus 46, first phalanx 21°5, second phalanx 19°5; 
fifth finger, metacarpus 27, first phalanx 13°5. 
Skull: length in middle line exclusive of crests 21 : basal 
length 18:1; zygomatic breadth 15:2; anteorbital breadth 
10; intertemporal breadth 5:2 ; front of canine to back of 
m® 8'5. 
Type. Male. B.M. no. 1. 8. 1. 18. 
This fine species is a giant relative of M. planirostris, and 
is particularly noticeable for the extreme flatness and breadth 
of the skull. 
It is interesting to observe how many species of this group 
run in couples, the pairs distinguished inter se mainly by size. 
Thus M. cerastes is a larger form of planirostris, rufus of 
obscurus, glaucinus of nanus, nasutus of Fosteri, and perotis 
of Trumbulli. 
11. Molossus Temminckii, Lund. 
26,42. Sapucay. January to April. 
Specimens of this species obtained by Mr. Perrens at 
Goya are not quite similar in colour to the Paraguayan ones, 
but the difference appears to be due to season. 
Thanks to the kindness of Dr. Winge, I have had the 
opportunity of comparing with the Goya and Paraguay sets 
typical skins from Lagoa Santa. I can find no difference 
of any importance between them. 
12. Artibeus lituratus, Licht. 
Chauve-souris premiére, Azara; the basis of Phyllostoma lituratum *, 
Licht., 1828. 
6. Asuncion. 17th February. 
23,22. Sapucay. February, April, and June. 
This is the common large Artibeus ordinarily but errone- 
ously called A. perspicillatus, Linn. + 
13. Nyctinomus laticaudatus, Geoff. 
Azara’s Chauve-souris huitiéme; the basis of Geoffroy’s Molossus lati- 
caudatus (Ann. Mus. vi. p. 156, 1805). 
Nyctinomus gracilis, Wagn., of Dobson and others. 
23,49. Sapucay. 22nd May, 1901. ‘31 specimens 
were caught at one time in a hollow tree.”—W. F. 
* Illiger used this name in 1815 (Abh. Ak. Berl. 1811, p. 109, publ. 
1815), but only as a nomen nudum. 
+ Of. Ann. & Mag. N, H. (7) viii. p. 192 (1901). 
