1139 
ally at low elevations; Java*; Lower Bengal; Malay Peninsula; Nepal; 
Singapore; south China; Sumatra. So. #495 Micraonyx^ cinerea, q. v. 
#495 [Micraonyx or] Aonyx ' leptonyx " [so. cinerea] mayoii Author not traced. 
Otter. 
Armillifer t796. 
[aonycis^. — Peritoneal cavity. — From River Indus, India. — T. h.] 
#496(493). Front claws present though sometimes very small; toes 2 and 3 on 
hind feet longest, toes 1 and 5 shortest; toes of fore feet normal. Tail at 
least one-third of body length. Dorsal bristle hair completely covers the 
wool hair. See §4:97 A. 
#497^ (497B). Pteroniira Gray, 1837, Charlesworth's Mag. Nat. Hist., n. s., 
v. 1, 580, mt. sambachii ^ Gray, 1837 so. (1897; 1911) brasiliensis Zimm., 1780, 
Demerara *. — Margined-tailed otter, Saumotter. Tail sword-shaped, very 
slightly attenuated, end rounded; distal two-thirds so depressed dorso- 
ventrally as to form lateral edges. Webs very large, lotJes extending beyond 
the claws. Hair relatively short, lying smooth. Nose always pilose. 
Head -f- body about 100 centimeters long. Tropical South America. Syn, 
Pierwm°o Wiegmann, 1838, Arch. Naturg., v. 1 (4), 285. 
§4:97 A Pteronura [or Lontra^] brasiliensis (Zimmermann, 1780, Geogr. Ges. 
Mensch., v. 2, 316 [Lutra ']) Ihering, 1911, Rev. Mus. Paulista, Sao Paulo, 
V. 8, 262. Ariranha. Guatemala to Guiana, Brazil, Paraguay, as far as 
Rio de la Plata. Syn. Pteronura^ sambachii, fide Trouess., 1897, 286; 
Ihering, 1911, 263. 
Alalia <t223i.— Intest. 
clathratum. — S tomach. — Matte- 
grosso*, Brazil. — T. h. 
pseudoclathratum. — Brazil *. — T, h. 
Echinostoma t255. — Intest. 
incrassatum. — Brazil, 
Paragonimus t250. — Lungs. 
rudis. — Brazil *. — T. h. 
Diphyllobothrium t295. 
reptans. — Larva in musculature. 
§4t9TIB (497^) . Tail gradually attenuated to a point, conical, somewhat depressed 
dorso-ventrally. Webs do not extend beyond claws. Head -}- body at 
most 85 centimeters long. See #498. 
#498 (498a ^°). Claws well developed; webs normal. Head -f- body over 50 
centimeters long. See #499. 
#499 (500). Lutra" Brisson, 1762, Regnum Animale, 201, 250, tat. Intra Linn., 
syn. (tsd. 18.91; 1900) vulgaris Erxl.; or Lutra Briinn., 1780, Zool. Fundam., 
34, tat. Mustela lutra.— Otter, Fischotter. Under jaw, under side and 
sides of neck not white up to eye-ear line; if a large neck spot is present 
w 498a (498). Amblonyx Rafinesque, 1832, Atlantic J., v. 1 (2), Summer (post May), 62, mt. Lutra 
concolor Raf., 1832 (concolar "») syn. Lutra amblonyx » Raf., 1832, from Assam t; conaolor » so. #495 cinerea.— 
All claws rudimentary, short, blunt, but present, webs rudimentary. Head + body up to 51 centimeters 
long. Oriental. Cf. #495 Micraonyx ' which is probably so. » Amblonyx. Cf. Pocock, 1921, Proc. 
Zool. Soc. London, 643. Cabrera and Miller agree with Pocock. 
"Syns.: Hydrogale'> Gray, 1865, Proc. Zool. Soc. London, no. 8, 131-132, mt. maculicoUis Licht. [not #354 
Hydrogale Kaup, 1829, insectivore]; 
Latax h Gray, 1843, Ann. Mag. Nat. Hist., v. 11 (68), Feb., 119, mt. lataxina Cuv., from South 
Carolina [not #502 Latax Gloger, 1827, sea otter]; 
Lataxia Gervais, 1855, Hist. nat. Mamm., Paris, v. 2, 118 (Latax Gray, 1843, renamed); 
Lataxina Gray, 1843, List Spec. Mamm. Brit. Mus., pp. xxi, 70, tat. lataxina Cuv. syn, moUit 
Gray (Latax ^ Gray, 1843, renamed); 
Lontra Gray, 1843, Ann. Mag. Nat. Hist., v. 11 (68), Feb., 118, contains canadensis, brasiliensis; 
Lutris 0 Dum6ril, 1806, Zool. Analytique, Paris, 12, 13; 
Lvirix ° Rafinesque, 1815, Analyse Nature, Palerme, 59, new name for Lutra; 1817, Amer. 
Monthly Mag., N. Y., v. 1, 437, cites only americana Raf.; 
Lutronectes • Gray, 1867, Proc. Zool. Soc. London, no. 12, 180, mt. whiteleyi Gray, syn. ? 
garis Temm. so. (1912) lutra Linn.; 
Nutria Gray, 1865, Proc. Zool. Soc. London, no. 8, 128, mt. felina Molina. 
