494 MR. A. H. G. DORAN ON THE MORPHOLOGY 



Fig. 23. Left malleus and incus : Cheirogaleus cookii. 



Figs. 24-26. Left ossicula: 24, Propithecus diadema (young) ; 25, Perodicticus potto; 26, Nycticebus 

 tardigradus. 



Fig. 27. Left malleus : Arctocebus calabarensis. 



Figs. 28, 29. Left ossicula : 28, Tarsius spectrum (young) ; 29, Chiromys madagascariensis. 



Figs. 30, 31. Articular surface of right malleus : 30, Homo; 31, Felis, much enlarged; a, a*, upper facet; 

 b, b*, lower facet. 



Figs. 32-41. Right mallei of various Carnivora, arranged so as to show the principal distinguishing 

 features seen in the different families, more especially the processus muscularis and the relative 

 breadth of the outer aspect of the manubrium : as, articular surface of malleus ; n, neck ; 

 I, lamina ; pg, processus gracilis ; pm, processus muscularis ; pb, homologue of processus 

 brevis ; emn, external surface of manubrium : — 32, Felis leo ; 33, Canis lupus ; 34, Hyaena 

 maculata ; 35, Proteles cristatus ; 36, Ursus marilimus ; 37. Viverra civetta ; 38, Herpestes 

 ichneumon; 39, Gulo luscus; 40, Meles taxus, showing angular projection on neck; 41. Lycaon 

 pictus. 



Figs. 42-55. Left incus: 42, Felis domestica ; 43, Canis familiar -is; 44, Cryptoprocta ferox ; 45, Viverra 

 civetta; 46, Paradoxurus musanga; 47 , Herpestes pulverulentus ; 48, Hycena; 49, Ursus mari- 

 timus ; 50, Otaria falklandica; 51, sElurus fulgens ; 52, Bassaris astuta; 53, Cercoleptes caudi- 

 volvulus ; 54, Lutra vulgaris; 55, Mustela erminea. 



Figs. 56-64. Left stapes : 56, Felis domestica ; 57, Canis lupus : 58, Hycena ; 59, Cryptoprocta ferox ; 

 60, Viverra civetta; 61, Herpestes pulverulentus; 62, Mustela erminea; 63, Cercoleptes caudi- 

 volvulus ; 64, Ursus maritimus. 



Plate LIX. 



Figs. 1-3. Left ossicula : 1, Felis domestica ; 2, Arctictis binturong ; 3, Suricala zenik. 



Fig. 4. Left malleus and incus : Octocyon lalandii. 



Figs. 5-12. Left ossicula : 5, Canis familiaris ; 6, Canis vulpes ; 7, Martes abietum ; 8, Ictonyx zorilla ; 



9, Lutra vulgaris * ; 10, Eupleres goudotii ; 11, Procyonlotor ; 12, Nasuanasica. 

 Fig. 13. Left malleus and incus : Aonyx indigitata. 

 Figs. 13a-l 6. Left malleus : 13«, Cynogale bennettii; 14, Cercoleptes caudivolvulus ; 15, Bassaris astuta ; 



an, angular projection on neck ; 16, Alliums fulgens. 

 Figs. 17, 18. Left ossicula: 17, Ursus ornatus; 18, Otaria falklandica (c in this figure and in the mallei 



of others of the Pinnipedia, represents the concavity on the anterior surface of the head of the 



malleus). 

 Fig. 1 9. Right ossicula : Otaria falklandica. 

 Fig. 20. Left ossicula : Otaria stelleri. 

 Fig. 21. Bight ossicula : Trichechus rosmarus. 

 Fig. 22. Left ossicula : Trichechus rosmarus. 



Fig. 23. Right ossicula : Macrorhinus proboscideus ; c, concavity of malleus. 

 Fig. 24. Left ossicula : Macrorhinus proboscideus. 

 Fig. 25. Right ossicula : Cystophora cristata; c, concavity of malleus. 

 Fig. 26. Left ossicula : Lobodon carcinophaga. 

 Fig. 27. Right ossicula : Phoca vitulina ; c, concavity of malleus. 

 Fig. 28. Left ossicula : Phoca vitulina ; eas, extra articulating surface on the malleus and incus ; 



gr, groove on the incus. 

 Figs. 29-31. Left malleus : 29, Phoca barbata; 30, Phoca grcenlandica ; 31, Phoca hispida. 



* The processus muscularis was broken off in the specimen from which this figure was taken, 



