1882.] PROF. ST.-GEORGE MIVART ON THE ^LUROIDEA. 197 



there is not so wide a lamina of bone to shelter the base of 

 the claw as in the Felidce. 



(4) The claws may be considerably arched, or they may be long 



and very slightly so. They are hardly ever (not except 

 perhaps m Prionodon and Poiana) completely retractile, and 

 often are not at all so. 



(5) The auditory bulla (except in Nandinia) is ossified, much in- 

 rR\ -Tu^^^' ^"^ ^'^°^^ externally that it consists of two chambers. 

 (0) Ihe bulla is not more prominent towards its inner than towards 



its hinder border. 



(7) There is an almost complete bony septum between the two 



chambers of the bulla, which may or may not be one behind 

 the other. 



(8) The bony meatus auditorius is almost always short, and may 



have its anterior, posterior, or inferior margin most project- 

 mg ; and it may be imperfectly ossified below. 



(9) There is a carotid foramen, or two carotid foramina, visible on 



each side of the basis cranii. 



(10) There is (except often in Viverricula) an alisphenoid canal. 



(11) The palatine foramina are situated in the anterior half of the 



palate. 



(12) ^- is generally and ^-^ constantly developed. 



(13) There is always an j^-^, and generally an ^^. 



(14) -^ is always present, generally large. 



(15) The autero-external cusp of — is generally very small. 

 (^^) mTi ^^s almost always a considerable talon. 



(17) The outer incisors may greatly exceed the middle ones in 



size. 



(18) The humerus sometimes wants the supracondyloid foramen. 



(19) The bone of the penis is small, save in Cryptoprocta. 



(20) The ears are not very long, erect, and pointed. 



(21) The tarsus and metatarsus are very often bald. 



(22) One plantar pad (small or large), and one beneath each 



digit. 



(23) Anus opening on the surface or in the middle of a saccular 



cutaneous invagination. 



(24) Anal glands from one to five pairs ; generally one pair. 



(25) Very often prescrotal scent-glands. 



(26) Caecum generally present and small or moderate, but occa- 



sionally absent. 



(27) No very hard, horny, sharp-pointed, conical papillge on the 



dorsum of the tongue. 



(28) Hippocampal gyrus completely separated from that anterior 



internal portion of the superior lateral gyrus which is behind 

 the crucial sulcus, by the continuation forwards of the calloso- 

 marginal sulcus to join the crucial sulcus. 



(29) The coronoid process of the mandible is almost, if not quite, 



always less lofty relatively, and less backwardly produced 

 than in the Felidat. 



