582 New or little known Mammalia, 



The species of this genus may be thus divided : — 

 A. Back grizzled. 



a. Face and spine short. C. spindsus. 



b. Face and spine tong. C. ecaudatus, and C. variegatus/ 



B. Back streaked. Face very long. C. madagascariensis. 



Le'ptonyx Gray. Cutting teeth § , conical, the upper outer ones very large ; 

 canine very large ; grinders §, compressed, bluntly 3-lobed. Muzzle broad, 

 rounded, simple; muffle hairy. Whiskers slightly waved. The front 

 clawa small. The hind feet clawless. 



This genus is nearly allied to Stenorhynchus, but differs in the form 

 of the grinders, and in the muzzle not being produced. 

 Leptonyx Weddellii Gray. Fulvous. Front of back, and line down the back, 

 blackish grey. Whiskers brown, tapering. Young blackish grey above ; 

 sides yellow-spotted ; beneath, pale fulvous when it is The Sea 

 Leopard, Weddell Voy., 23.; Leopardine Seal, Jameson; and Otaria 

 Weddellii Lesson. 



Inhabits South Seas. — Captain Fitzroy. British Museum. 

 Phoca ? platythrix. Chestnut brown; rather paler beneath. Whiskers 

 and eyebrows black, compressed, strongly waved. Fur formed of uni- 

 form short flat hairs, without any under fur. 



Length, 47 in. ; fore feet, 8iin.; and hind feet, 10§ in. 

 Inhabits Cape of Good Hope. British Museum. 

 The family of seals (Pho'cid^e) may be very naturally divided into 

 the following groups : — 



A. Grinders ivith many roots. Ears none. Toes simple. Soles and Palms 



hairy 



a. Cutting teeth | (Stenorhynchina) Leptonyx, Pelagias, Stenorhyn- 



chus. 



b. Cutting teeth f. (Phocina) Phoca, Callocephalus. 



B. Grinder rootless. 



a. Ears none. Muzzle truncate^ simple. Cutting teeth § ; canines large. 



(Trichisina) HalichceVus and Trfchecus. 



b. Ears none. Toes simple. Muzzle of males with an infiatile appendage. 



(Cystophorina) Cystophora, Moriinga. 



c. Ears cylindrical. Toes with long membranes ; palm and soles bald, 



longitudinally grooved. Nose simple. ( Arctocephalina) Arctocephalus 

 and Otaria. 



The Kangaroos (Ma'cropus). As the species of this genus have been 

 very imperfectly described, I have been induced to make the following 

 synopsis of the species which have come under my observation ; and 

 have divided them into the following genera : — 



1. Ma'cropus Shaw (part). The muffle hairy, with a narrow naked line 

 over the nostrils, and a small naked spot in front. Canines none ; the 

 upper cutting teeth of nearly equal length, grooved ; the hinder much 

 the broadest ; and formed of two lobes, folded against each other, the 

 hinder fold nearly three times as long as the front one, and grooved 

 on its hinder parts. 



Mdcropus major Shaw. Zebua gigantea Erxl. Tail strong, covered with 

 close-set soft hair. 



Halmatu^rus F. Cuv. (part). Muffle bald, distinct. Canines none; the 

 upper cutting teeth nearly of the same length ; the front pair rather 

 incurved, marked with a groove ; the hinder ones broadest, with a more 



