18 
ORDER CHIROPTERA.— GENUS DYSOPES. 
5. DYSOPES VEI.OX — LONG-WINGED BULL-DOG BAT. 
Syn. Dvsofes velox, (Molosse veloce.) — Natterer. — Temm. Mon. Mam. 
I. 234. 
Molossos velox. — L ess. Mam. 102. 
Icon.’ Temm. Mon. Mam. pi. 22, fig. 1. — pi. 23, fig. 22, (teeth.) 
SPECIFIC CHARACTERS. 
The Hair deep reddisli-brown above ; lighter beneath. The Mem- 
branes long and narrotv. 
The Neck with a glandular sac. 
Inhabits Brazil. 
This Bat was discovered and named in the Brazils, w'as sent thence by 
M. Natterer of Vienna, and has since been examined by other Natural- 
ists. Its dimensions are a trifle less than those of the preceding species; 
the wings are rather narrow, but are far from being short ; and the shorter 
' half of the tail is alone left free. The ears are broader than they are 
elevated, and conjoined in front, hut destitute of any fold of skin on the 
chanfrin. The syphon of a small glandular bag may be seen in the front 
of the neck, if examined when the specimen is fresh or moist, but not 
when dry. The fur is very sho t and smooth, and the hairs every where 
are of one colour ; the side membranes are clad both above and below, 
and transparent hairs run along the arm and fore-arm. The colour in 
the superior parts is of a very deep and shining chestnut colour j beneath, 
the tint is somewhat duller and paler. 
Its habits have not been described. 
6. DYSOPES OBSCURUS.— SOOTY BULL-DOG BAT. 
Syn. Molossos obsccrus. — Geoff. Ann. Mus. VI. 155. — Desm. Mam. 
Molossos fduginOsds? — Gray, in Mag. ZooL and Bot. II. 501. 
DysOpes obscords, (Molosse obscdr.) — Temm. Mon. Mam. I. 236. 
Icon. Temm. Mon. Mam. pi. 22, fig. 2. — PI. 23, fig. 20, (teeth.) 
Molossos fcmarics ? — Spix, Sim. et Vespert. Bras. pi. 35, fig. 6. 
SPECIFIC CHARACTERS. 
The Hair of tw'o colours j above blackish-brown at the points, beneath 
greyish-brown ; the base of the hairs white. 
The Ears united by a baud of skin, passing to the nostrils. 
Inhabits Brazil and Surinam. 
The Sooty Bull- Dog Bat is three inches three lines long; its alar 
membranes are somewhat broader, in proportion to the size of the body, 
than in its congeners ; the ears, not so high as they are broad, are united 
at their base by a fold of skin which reaches the nostrils ; the larger half 
of the tail is engaged in the interfemoral membrane, and the rest is quite 
free ; the tibia and fibula ate proportionably longer than in the other 
species. The individual hairs exhibit two colours ; in the upper parts 
of the body they are blackish-brown at the tip, and white at the base; 
in the lower parts, with a white base, they have ash-brown tips. There 
are minute hairs at the margin 'of the lips, which are smooth. 
M. Temminck states that he has seen individuals of this species which 
were sent from Brazil ; but be took his description from individuals trans- 
mitted from Surinam. 
7. DYSOPES MOXENSIS.— NOTCH-EARED BULL-DOG BAT. 
Syn. et Icon. Molossus Moxensis. — D’Orb. Voy. (Mammifdres,) pi. 1 1, 
SPECIFIC CHARACTERS. 
The Hair brown above, lighter beneath ; the membranes grey. 
The Ears uniting over the forehead with a transverse notch. 
Inhabits South America. 
To D’Orbigny, the celebrated Naturalist, who has travelled to such 
good purpose in South America, we owe the (as j’et slight) intimations we 
posses.s of this species, as well as the following. The description of these 
Bats will appear in the splendid work of the French Government, “ Voyage 
dans L’Ainerique Meridionale but the portion relating to the Mam- 
malia not having been published, we possess only the beautiful coloured en- 
gravings without the letter-press. Compelled, therefore, to postpone the 
minute description, we observe that the Moxensis, in its general appear- 
ance, closely resembles its congeners. It is stout bodied and compact, 
and the breadth of the membranes is moderate throughout ; this is espe- 
cially true of the interfemoral, which scarcely comes down to the end of 
the fibula, and does not include the half of the tail ; the ears are broader 
than they are high, and the anterior bauds hanging over the eyes, all but 
meet over the nose, having a marked notch between them. The 
fur over the body seems copious, and is universally of a rich brown ; the 
colour of the membranes and ears is of a b’ownish-black. 
8. DYSOPES RUGOSUS.— WRINKLED BULL-DOG BAT. 
Syn. et Icon. Molossus rugosus, — D’Orb. Voy. (Mammiffires,) pi. 10. 
SPECIFIC CH-ARACTERS. 
The Hair and Mf..mbranes grey-brown. The Ears and Upper Lip 
deeply wrinkled. 
Inhabits South America. 
From the same reasons as those assigned in the notice of the last spe- 
cies, our acquaintance with this one is likewise very limited. In size it ap- 
pears to be somewhat less, and the interfemoral membrane extends two- 
thirds down the tail, which, however, is shorter. The uniform tint both 
of the body and membranes is a greyish-brown. The ears are remark- 
ably large and broad ; and a very distinguishing character, whence the 
animal has derived its name, consists in a number of marked rug® ex- 
tended along both the aural membrane and the upper lip. 
9. DYSOPES AMPLEXICAUDATUS.— GUIANA BULL-DOG BAT. 
Syn. Molossus amplexicaodatus. — Geoff. Ann. Mus. VI. 156. — Desm. 
Mam. No. 159. 
Vespertilio BARBIPES. — Act.* Soe. Hist. Nat. Par. I. 115. 
Icon. La Chauve-Souris de la Guvane Buff. Hist. Nat. Suppl. VII. pi. 
75. 
SPECIFIC CHARACTERS. 
The Hair black ; lighter beneath ; grey on the sides of the abdomen. 
The Tail entirely enveloped in the interfemoral membrane. 
Inhabits Cayenne. 
The fur of this Guiana Bull-Dog Bat is bl.Tckisb, darker above than 
below, the flanks asb-coloured ; the ear is wrinkled, and extends over 
the cheeks ; the tail is wholly enveloped in the interfemoral membrane, 
which Is much more ample than in the other species. It is said to be of 
the size of the Serotine Bat, and to be very common in Cayenne, where 
it flies about in large troops. 
10. DYSOPES CASTANEUS.— CHESTNUT BULL-DOG BAT. 
Syn. Molossus castaneus. — Geoff. Ann. Mus. VI. 155. — Desm. Mam. No. 
156. 
Chauve-Souris chataine, ou Sixibme D’Azar. — Quadr. Parag. II. 
282. 
Icon. , 
SPECIFIC CHARACTERS. 
The Hair chestnut brown above, wliitish beneath ; a band extending 
from the muzzle to the forehead. 
The Tail free for one-tbird of its length. 
Inhabits Paraguay. 
Our acquaintance with the Chestnut Bull-Dog Bat rests solely on the 
short description of Azara, this one forming tlie sixth of tlie twelve he lias 
described.* It is cbesiniit-coloured above, and wliitish beneath. It lias a 
cutaneous band extending from the muzzle to the forehead ; the alar 
membranes are blackish ; the tail free only in its last third ; the external 
ear is six lines high, rounded tow-ards the point, and inclined somewhat 
forward, e.xtending to the front band. Its length is lour and a half 
inches ; its extreme breadth fourteen. Its fur is short, soft, and close. 
It inhabits Paraguay, where, however, 'Azar.s slates lie never saw any 
other than the one from wliicb lie took his description, and wliicli be 
bought. 
(B.) Bull-Dog Bats of the Old Continf.nt. 
11. DYSOPES TENUIS— SLENDER BULL-DOG BAT. 
Syn. Dysopes tenuis, (Molosse grele.) — Temm. Mon. Mam. I. 228. 
Icon. Nycxinomus tenuis. — Horsf. Jav. 
Temm. Mon. Mam. I. pi. 19, (bis.)— PI. 23, fig. 10 to 16, (crania and 
teeth.) — PI. 24, fig. I, (skeleton.) 
SPECIFIC CHARACTERS. 
The Hair blackish -brown above, ash-coloured beneath. 
The Alar Membranes very long and narrow. 
The Interfemoral Membrane sustained by scattered muscular fibres. 
The Tail free for one-lialf of its length. 
Inhabits Java. 
1 -\cT. Soc. Hist. Nat. Par. — Actes de la Societe d'Histoire Naturelle de Paris. Paris 1792. 
2 Essais sur I’Histoire NatureUe des Quadrupedes de la Provence du Paraguay, tome II. 264 295. 
