38 CHIROPTERA. 
2. M. bocourtianus. Ears as long as the head; nose-leaf continuous with upper 
lip; last caudal vertebra and half the next free, the exserted portion of the 
tail equalling the thumb in length. Fur dark brown above, paler beneath. 
1. Macrotus waterhousii. 
Macrotus waterhousii, Gray, P. Z. 8. 1843, p. 21 (descr. orig.)'; Peters, Monatsb. Ak. Berl. 1865, 
p. 503°; Dobson, Chir. Brit. Mus. p. 464, pl. xxv. fig. 1’. 
? Macrotus californicus, Baird, Proc. Ac. Philad. 1858, p. 117 (descr. orig.)'; Rep. Mex. Bound. 
Surv. ii, Mamm. p. 4, pl. i. fig. 2°; H. Allen, Mon. Bats N. Am. p. 3°. 
Macrotus mexicanus, De Saussure, Rev. et Mag. de Zool. 1860, p. 486 (descr. orig.)’. 
Hab. Catarornta4?.—Mexico, Yantepec (De Saussure ™).—West INDIES *. 
Waterhouse’s Bat appears to be peculiar to the West-Indian Islands and to the 
countries bordering the Gulf of Mexico; for though the continental form has been 
supposed to be a distinct species, as shown by the above synonymy, there appears to be 
no sufficient ground for its separation. The habits of this Bat, as observed in Jamaica, 
have been described by Gosse* and by Osburnf. It seems to be one of the most 
abundant of the Chiroptera of that island, where it lives in caves or in cellars, but 
often enters lighted rooms at night. Owing to the great proportional breadth of its 
wing-membrane, it makes a rushing sound in flight; and the same peculiarity causes it 
to appear much larger than it really is when it is observed on the wing. It feeds 
principally on insects, though Mr. Osburn had reason to believe that it also preys on 
various fruits. 
2. Macrotus bocourtianus. 
Macrotus bocourtianus, Dobson, Ann. & Mag. Nat. Hist. (4th ser.) xviii. p. 436 (1876, descr. orig.)'; 
Cat. Chir. Brit. Mus. p. 467°. 
Hab. Guatemata, Vera Paz (Bocourt, Mus. Paris. *). 
The only specimens of Bocourt’s Bat yet known are the four Guatemalan examples in 
the Paris Museum, which are the types of Mr. Dobson’s description. The diagnosis 
already given will be sufficient to distinguish the species. Mr. Dobson states that 
these four specimens all agree in their characters, and, though not full-grown, indicate 
a larger species than the last. 
4. VAMPYRUS. 
Vampyrus (Et. Geoffroy), Leach, Trans. Linn. Soe. xiii. p. 79 (1822). 
In this genus the well-developed nose-leaf has free anterior and lateral edges, the 
chin has a longitudinal furrow between two naked ridges, and the tail is either very 
* * Naturalist’s Sojourn in Jamaica,’ pp. 295-297. + P.Z.8. 1865, pp. 74-78. 
