THE FAMILIES AND GENERA OP 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 MYSTACOPIDiE. 



1857. Noctilionina Tomes, Proc. Zool. Soc. London, p. 138 (part). 

 1863. Phyllostomidw Tomes, Proc. Zool. Soc. London, p. 84 (part). 



1865. Brachyura Peters, Monatsber. k. preuss. Akad. Wissenseh., Berlin, 

 p. 257 (part). 



1866. Noctilionulw (part: Xoctilionina, part) Gbay, Ann. and Mag. Nat. 

 Hist, 3d ser., XVII, p. 93, February, 1866. 



1875. Emballonurhlrc (part: Molossincr, part, Mystacince) Dobson, Ann. 



and Mag. Nat. Hist, 4th ser., XVI, p. 349, November, 1875. 

 1878. Emballon nr idee (part: Molossina, part, Mystacinw) Dobson, Catal. 



Chiropt. Brit. Mus., p. 442. 



1891. Emlallonurhla> (part: Molossinw, part, Mystacopine division) Flower 

 and Lydekker, Mammals, living and extinct, p. 669. 



1892. Vespertilionidce (part: Molossini, part) Winge, Jordfundne og nule- 

 vende Flagermus (Cbiroptera) fra Lagoa Santa, Minas Geraes, Bra- 

 silien, p. 36. 



Geographic distribution. — Xew 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 " ; foot short 

 and broad, resembling that of the Molossidfe, 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 vertebras distinct, the third with two 

 minute ventral processes; skull distinctly Vespertilionine in aspect, 

 the audital bulla? 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 



a Perhaps fused in old individuals, though from the distinctness of the bones 

 in a young adult this seems unlikely. 



