DESCRIPTION OF THE PLATES. 



27 



showing the crowns of the teeth of the 

 Gymnura Raplesii : 4a, cranium and side 

 view of the teeth ; 4b, lower jaw and side 

 view of the teeth of the same Insectivore. 

 Fig. 5. Upper jaw, showing the crowns 

 of the teeth of the Hedge-hog (Erinaceus 

 europatus). Fig. 6. Upper jaw, showing 

 the crowns of the teeth of the Cape- 

 Hedgehog (Ericulus spinosus). De Blain- 

 ville. 



PLATE 112. 



Fig. 1. — Outline of skull, and left upper 

 teeth of the Common -Bat (Vespertilio 

 murinus). Fig. 1". Outline of lower jaw, 

 and left lower teeth of the Common- 

 Bat. Fig. 1". Outline of skull and 

 lower jaw of a very young Bat, with the 

 deciduous teeth : i i, upper and lower 

 permanent incisors ; i i, upper and lower 

 deciduous incisors ; c c, upper and lower 

 permanent canines ; c', upper and lower 

 deciduous canines ; p p, upper and lower 

 permanent premolars ; p' p', upper and 

 lower deciduous molars ; m m. permanent 

 true molars. Fig. 2 2\ Upper and lower 

 teeth of the Noctule ( Vespertilio noctula) . 

 Fig. 2". Front view of upper incisors 

 and canines of ditto. Fig. 3. Upper and 

 lower teeth of the Serotine (Vespertilio 

 serotinus). Fig. 4. Upper and lower teeth 

 of the Glossophaga. Fig. 5. Upper and 

 lower teeth of the Horse-shoe Bat (Rhino- 

 lophus ferrum-equinum) . Fig. 6 and 6\ 

 Upper and lower teeth of Nycteris. 

 Fig. 6". Front view of the incisors and 

 canines of ditto. Fig. 7. Side view of 

 the teeth of ditto. Fig. 8. Side view of 

 the teeth of Phtjllostoma hastatum. Fig. 

 9. Side view of the teeth of the Vampire- 

 Bat (Desmodus spectrum). Fig. 10. 

 Upper and lower teeth of a Frugivorous 

 Bat (Pttrojnts). Fig. 10" \ The same 



teeth detached. 

 ville. 



Rousseau and De Blain- 



PLATE 113. 



Fig. 1 . — A reduced figure of a magnified 

 view of a longitudinal section of the 

 molar tooth of Pteropus edulis: d' d', 

 dentinal cells.* nat. size. Fig. 2*. A 

 small portion of dentine and enamel, 

 magnified 400 linear diameters, showing 

 d, the dichotomous branches of the 

 dentinal tubes ; e, the enamel. Original. 



PLATE 1 13a. 



Fig. 1. — A reduced figure of a magnified 

 view of a transverse section of the canine 

 tooth of the Pteropus edulis : d, the den- 

 tinal cells. Fig. 2. A small portion of 

 the peripheral part of the dentine of the 

 same tooth, showing the dichotomous 

 divisions and small lateral branches of 

 the dentinal tubes, and the peripheral 

 contour of d m d\ the dentinal cells. Ori- 

 ginal. 



PLATE 114. 



Fig. 1. — Upper teeth of the Common Colu- 

 go (Galeopithecus Temminckii) . Fig. la. 

 Lower teeth of the same. Fig. lb. Upper 

 and lower deciduous and permanent teeth 

 of the same ; in each figure i, is incisors ; 

 c, canine ; p, premolars ; m, molars. 

 Fig. 2. Teeth of the Cheiromys Madagas- 

 cariensis. Fig. 3. Teeth of the Malmag 

 (Tarsius spectrum). Fig. 4. Teeth of the 

 Slow-Lemur (Ste?iops tardigradus). Fig. 

 5. Teeth detached of the Maki-Lemur 

 (Lemur macauco). Fig. 6. Teeth of the 

 Woolly Indri (Lichanotus laniger). Fig. 

 7. Teeth of the Galago (Otolicnus mnda- 

 gascariensis). Fig. 8. Teeth of the Mar- 

 moset (Hapalejacchus), magnified. Fig. 9. 



