MAMMALIA. 



649 



pupils circular in some, in others vertically oval ; fore feet 

 with five toes, hind feet with four ; nails retractile. 



FAMILY III. AMPHIBIA. 



Feet enveloped in the skin, short, fine shaped, and 

 adapted for swimming, hind feet placed horizontally ; in- 

 cisors generally J 1 f . 



Phoca Falklandica. Common ^Scal, pi. 54. f. 63. 

 Teeth variable. Incisors |, or I,, or J ; canines \ I; mo- 

 lars J \, or I J, or J |; nostrils susceptible of being closed 

 at will ; eyes large ; no ears, or only rudimentory ; five- 

 toe ; the anterior extremities witli hands, and the poste- 

 rior with feet; ringers enveloped in the skin; tail short, 

 thi ck ; four abdominal teats. 



Mininga proboscidea. Proboscis Seal. Incisors J, or ?; 

 canines i t; molars short, broad and flat; no external 

 ears; nose elongated. 



Olaria Ursina. Sea Bear, pi. 54. f. 65. Incisors J; 

 canines \ 1, large; molars J ; with distinct external 

 ears. 



Trichecus rosmams. Walrus, pi. 54. f. 64. Incisors 

 J; canines i J, much elongated, longer than the head ; 

 molars | *; body elongated, conical ; head round, muzzle 

 large; no external ears; tail short; fore feet shaped like 

 paddles, with five short claws; hind feet with five toes 

 united in the skin, and placed horizontally. 



ORDER V. MARSUPIALIA. 



Teeth of the various sub-divisions differing considera- 

 bly; young produced in an imperfect state, and are ma- 

 tured in an external pouch, which is supported by two 

 marsupial bones; thumbs of hind extremities, mostly 

 distinct and opposable to the fingers, in most species. 



lit Sub-division. With canines and insectivorous 

 cheek teeth. 



Didelphis Virginiana. Virginian Opposum, pi. 53. 

 f. 39. Incisors V; canines 1 f, strong, compressed, and 

 projecting slightly ; molars ? ? or f f ; head long, conical, 

 with a pointed muzzle; ears large and round, nearly des- 

 titute of hair ; tongue amleated; five toes, nails long and 

 bent; hind feet with long thumbs, opposable to the fin- 

 gers ; tail long, half covered with hairs. 



Cheironectes palmata. Yapork, pi. 54. f. 55. Incisors 

 V; canines t i, grinders pointed and cutting; feet pahn- 

 ated; no thumb nails; tail long, naked and prehen.iile. 



Dasyurus macrourus. Spotted Dasyurus, pi. 54. f. 56. 

 Incisors |; canines i I, grinders I J; head conical; fore 

 feet, five-toed, nails crooked ; thumbs of hind feet desti- 

 tute of nails; tail long, hairy. 



Gymnura llafflvsea. Raffles' Gymnura, pi. 54. f. 20. 

 Incisors f; canines V-; molars f; head elongated, later- 

 ally compressed; upper jaw considerably longer tlian the 

 under one ; ears round, naked ; tail long, naked and 

 scaly; feet pentadactyle, nails long, hooked and retractile; 

 hind legs very long. 



Perameles nasuta. Long Nosed Perameles, pi. 54. f. 

 54. Incisors V or V; canines \ V, molars H or f f; 

 head much elongated ; fore feet with five toes ; hind feet 

 four-toed, the two internal enveloped in the skin, showing 

 the nails only ; tail long, acute. 



2nd Sub-division. Incisors J, lower ones very long; 

 canines in lower jaw, very small or none. 



Phalangista Cookii. Cook's Phalanger, pi. 54. f. 21. 

 Incisors 1; canines 4 j, or none; false molars i f or f J; 

 true molars J J or f ,; head elongated ; feet with five 

 toes ; tail destitute of hair in some species. 



Petaurista laguanoides. Flying Petaurista, pi. 55. f. 

 25. Incisors J; canines i i or fr ; molars J | or J {; 

 head elongated ; eyes small; feet short, five-toed; united 

 by a common skin ; claws arched and compressed ; skin 

 of sides extended, and uniting the limbs, so as to form a 

 parachute; tail long. 



3rd Sub-division. Incisors * ; the lower ones very 

 long and shelving ; canines ? ?. 



Potvrus marinui. Kangaroo Rat, pi. 54. f. 23. In- 



cisors |; canines i J; molars '; head long, acute; ears 

 large ; upper lip slit ; fore legs short. 



Jiangurus Labiatus. Large Kangaroo, pi. 53. f. 40. 

 Incisors {; no canines; molars J I; head lengthened; 

 ears and eyes large; fore legs very short, five toes, with 

 strong nails; hind legs very strong, four-toed ; tail long, 

 very strong, assists the animal in leaping. 



P/iascolarctos fuscut. Koala, pi. 53. f. 41. Incisors 

 i; false molars J 5; true molars $ i; cars large ; tots 

 parted into two groups, the thumbs and index finger be- 

 ing on one side, the three others on the opposite ; hind 

 feet wiih a clawless thumb. 



4th Sub-division. Incisors f; no canines. 



Phascolomys Woiribat. Wombat, p. 53. f. 42. In- 

 cisors |; no canines; molars \ t; body thick; head large, 

 depressed; ears short; tail very short. 



5th Sub-division. Not marsupial. 



Arctictes albifrons. White-faced Arctictes, pi. 52. f. 

 30. Head short; muzzle abruptly pointed; ears small, 

 tufted with long bristly hairs; tail long, very hairy, and 

 prehensile. 



ORDER VI. RODENTIA. 



Each jaw provided with two large incisors, separated 

 from the molars by an open space ; destitute of canine 

 tteth ; lower jaw articulated by a longitudinal condyle ; 

 orbits not separated from the temporal fossae ; the Zygo- 

 matic arches small ; toes varying in number. Cutting 

 teeth of a rodent, pi. 52, f. 19. 



Section f. Provided with, Clavicles. 



Castor filer. Beaver, pi. 53. f. 43. Incisors f; no 

 canines ; molars } J; incisory teeth strong ; eyes small ; 

 ears short and rounded ; feet five-toed, the posterior ones 

 palmated ; tail large, depressed, and covered with scales ; 

 males provided with a pouch which secretes an unctuous 

 ,matter. 



Fiber Zibethicus. Ondatra, pi. 54. f. 25. Incisors J; 

 canines I I; molars I f; fore feet with four toes; hind 

 feet with five, which have stifT hairs on their edges, 

 adapting them for swimming; tail long and laterally 

 compressed ; both sexes with an unguent pouch. 



Arvicola amphibius. Water Campagnol, pi. 53. f. 49. 

 Incisors ?; no canines; grinders ! i, flat on the crowns; 

 tail round and hairy. 



Isodon pilorides. Hairy Sigmadon, pi. 52. f. 17. In- 

 cisors f ; destitute of canines ; grinders i }, with flat 

 crowns divided into radicles ; fore feet, with four toes, and 

 a small tubercle instead of a thumb; hind feet also four 

 toed, and rest equally on the sole in walking. 



JVeotoma Drummondi. Drummond's Neotoma, pi. 

 54. f. 26. Incisors f; no canines; molars f |, with five 

 triangles, one of which is anterior, two exterior and two 

 interior ; fore feet four-toed, with a rudiment of a fifth ; 

 hind feet with five toes. 



Neotoma Floridana. Florida Neotoma, pi. 54. f. 6. 

 Fur very fine, lead-coloured and mixed with yellow 

 above ; abdomen and throat bun". 



Sigmadon hispidum. Prickly Sigmadon, pi. 52. f. 14. 

 Incisors f; no canines; molars { f; fore feet with four 

 toes and the rudiment of a fifth provided with a nail ; 

 hind feet with five toes; tail hairy. 



Lemmus Norvegicus. Lapland Lemming, pi. 54. f. 27. 

 Incisors ?; destitute of canines; grinders J i, with flat 

 crowns and angular pieces of enamel ; ears very short ; in 

 some species the fore feet are five toed, and in others four ; 

 hind feet five toed, the-nuils on all of them formed for 

 digging- 



ScJtimyi hispidus. Rough-haired Echimys, pi. 54. f. 



12. Incisors J; no canines; grinders i i; head long; 

 eyes large ; ears somewhat short : fore feet with four toes, 

 and the rudiment of a fifth ; hind feet with five toes; tail 

 long, usually scaly; back covered with short spines. 



Myoxus acellanariut. Common Dormouse, pi. 54. f. 



13. Incisors f; no canines ; molars 1 J, divided by trans- 

 verse bands; eyes large, prominent; ears large, round; 

 fore feet four toed, with a rudimental thumb; hind feet 

 with five toes; tail long, hairy, and tufted in some 

 species. 



