18 



ORDER CHIROPTERA — GENUS DYSOPES. 



5. DYSOPES VELOX LONG-WINGED BULL-DOG BAT. 



Syn. Dvsopes velox, (Molosse veloce.) — Natterer. — Temm. Mon. Mara. 

 I. 234. 

 Molossus velox. — Less. Mam. 102. 

 Icon. Temm. Mon. Mam. pi. 22, fig. 1.— pi. 23, fig. 22, (teeth.) 



SPECIFIC CHARACTERS. 



The Hair deep reddish-brown above ; lighter beneath. The Mem- 

 bkanes long and narrow. 



The Neck with a glandular sac. 

 Inhabits Brazil. 



This Bat was discovered and named in the Brazils, was 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, but 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; beneath, 

 the tint is somewhat duller and paler. 



Its habits have not been described. 



6. DYSOPES OBSCURUS.— SOOTY BULL-DOG BAT. 



Syn. Molossus obscurus. — Geoff. Ann. Mus. VI. 155. — Desm. Mam. 



Molossus fdliginosds ? — Gray, in Mag. Zool. and Bot. II. 501. 



Dysopes obscurus, ( Molosse obscor. ) — Temm. Mon. Mam. I. 236. 

 Icon. Temm. Mon. Mam. pi. 22, fig. 2 PI. 23, fig. 20, (teeth.) 



Molossus fumarius ? — Spix, Sim. et Vespert. Btas. pi. 35, fig. 6. 



SPECIFIC CHARACTERS. 



The Hair of two colours ; above blackish-brown at the points, beneath 

 greyish-brown ; the base of the hairs white. 



The Ears united by a band 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 are 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 ate smooth. 



M. Temminck states that he has seen individuals of this species which, 

 were sent from Brazil ; but he 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. (Mamrniferes,) pi. 11. 



SPECIFIC CHARACTERS. 



The Haie 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 yet slight) intimations we 

 possess 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'Amerique 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 bands 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 bownish-black. 



8. DYSOPES RUGOSUS WRINKLED BULL-DOG BAT. 



Syn. et Icon. Molossus rugosus. — D'Orb. Voy. (Mammiferes,) pi. 10. 



specific characters. 



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 itap. 

 pears to be somewhat less, and the interfemorai 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 lias derived its name, consists in a number of marked ruga ex- 

 tended along both the aural membrane and the upper lip. 



9. DYSOPES AMPLEXICAUDATUS.— GUIANA BULL-DOG BAT. 



Syn. Molossus amplexicaudatus. — Geoff. Ann. Mus. VI. 156. — Desm. 



Mam. No. 159. 



Vespertilio barbipes Act. 1 Soc. Hist Nat. Par. I. 115. 



Icon. La Chauve-Souris de la Guyane Buff. Hist. Nat. Suppl. VII. pi. 



75. 



specieic 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 Bu'.l-Dog Bat is blackish, darker above than 

 below, the flanks ash-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 Serot'ne 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 Sixieme D'Azar. — Quadr. Parag. II. 

 282. 

 Icon. 



specific characiers. 



The Hair chestnut brown above, whitish beneath; a band extending 

 from the muzzle to the forehead. 



The Tail free for one-third of its length. 

 Inhabits Paraguay. 



Our acquaintance with the Chestnut Bull-Dog Bat rests solely on the 

 short description of Azara, this one forming the sixth of the twelve he has 

 described. 2 It is chestnut-coloured above, and whitish beneath. It has 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 towards the point, and inclined somewhat 

 forward, extending to the front band. Its length is four and a half 

 inches ; its extreme breadth fourteen. Its fur is short, soil, and close. 

 It inhabits Paraguay, where, however, Azara states he never saw any 

 other than the one from which he took his description, and which he 

 bought. 



(B.) Bull-Dog Bats of the Old Continent. 



11. DYSOPES TENUIS.— SLENDER BULL-DOG BAT. 



Syn. Dysopes tenuis, (Molosse grele.) — Temm. Mon. Maui. I. 228. 



Icon. Nyctinomus tenuis Horsf. Jav. 



Temm. Mon. Mam. I. pi. 19, (bis.)— PI. 23, fig. 10 to 16, (crania and 

 teeth. )— PI. 24, fig. 1, (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-half of its length. 

 Inhabits Java. 



i Act. Soc. Htst. Nat. Par — Actes de la Societe d'Histoire Naturelle de Paris. Paris, 1792 

 2 Essais sur l'Histoire NatureUe des Quadrupedes de la Provence du Paraguay, tome II. 264—295. 



