1 THE FAMILIES AND GENEKA OF BATS. 239 
Third and fourth metacarpals equal, slightly longer than forearm; 
fifth metacarpal one-fifth shorter than third. 
Species examined. — Tomopeas ravus Miller. 
Remarks. — Although superficially resembling a small Pipistrellus , 
Rhogeessa , or Myotis , this genus is at once recognizable by its essen- 
tially Molossine ear. 
Family MYSTACOPIDHh 
1857. Noctilionma Tomes, Proc. Zool. Soc. London, p. 138 (part). 
1863. Phyllostomidce Tomes, Proc. Zool. Soc. London, p. 84 (part). 
1865. Brachyura Peters, Monatsber. k. preuss. Akad. Wissensch., Berlin, 
p. 257 (part). 
18 66. Noctilionidce (part: N octilionina, part) Gray, Ann. and Mag. Nat. 
Hist, 3d ser., XVII, p. 93, February, 1866. 
1875. Emballonuridw (part: Molossincc, part, Mystacince ) Dobson, Ann. 
and Mag. Nat. Hist., 4th ser., XVI, p. 349, November, 1875. 
1878. Emballonuridw (part: Molossinw, part, Mystacince) Dobson, Catal. 
Chiropt. Brit. Mus., p. 442. 
1891. Emballonuridw (part: Molossince, part, Mystacopine division) Flower 
and Lydekker, Mammals, living and extinct, p. 669. 
1892. V espertilionidw (part: Molossini, part) Winge, Jordfundne og nule- 
vende Flagermus (Ckiroptera) fra Lagoa Santa, Minas Geraes, Bra- 
silien, p. 36. 
Geographic distribution. — New Zealand. 
Characters . — Humerus essentially as in the Vespertilionidse, the 
trochiter articulating with scapula by surface nearly as large as 
glenoid fossa, but its height fully equalled by the very large, broad 
trochin ; ulna distinct, slightly less than half as long as radius, with 
which it is not fused proximally; second finger with well-developed 
metacarpal and one minute bony phalanx; third finger with three 
bony phalanges and a „ cartilaginous tip, the first flexed on upper 
surface of metacarpal when wing is at rest; shoulder girdle normal, 
the seventh cervical vertebra not fused with first dorsal a ; foot short 
and broad, resembling that of the Molossidie, but with the peculiari- 
ties less pronounced; fibula and tibia as in the Molossidse; pelvis 
normal, but unusually elongated, the boundaries of the sacral ver- 
tebrae clearly indicated ; lumber vertebrae distinct, the third with two 
minute ventral processes; skull distinctly Vespertilionine in aspect, 
the audital bullae well developed, and without emargination of inner 
border; premaxillaries with palatal branches present, isolating two 
lateral foramina ; posterior orifice of antorbital canal greatly en- 
larged ; teeth normal; ear essentially Vespertilionine in its general 
form and in the size of tragus and antitragus, but anterior border 
of auricle without basal lobe; no trace of keel; muzzle obliquely 
® Perhaps fused in old individuals, though from the distinctness of the bones 
in a young adult this seems unlikely. 
