1893.] DR. C. J. PORSTTH MAJOR ON MIOCENE SQUIRRELS, 215 



Fig. .5. JLerus (Eojcen(s) }iosei,Thos. pj. 



tt. Am<s {Ecaeriis) innigtiis, Fr. Cuv. m^. 



7. Xents (Profoxerus) statigeri, Wa*^erb. m^. 



8. Xerus {Protoxej-us) aubinnU, Gr. ix\y 



9. Xerus {Atlantoxerus) gefuhis, Gesn. in.,. 



10. Xerus erythopus, Geoff, m.,. 



11. Xerus {Eoxeriis) laticuudatus,Gr. p,. 



12. „ „ m^. 



13. Anomalurus fraseri, Waterh. p^. 



14. Anomalurus beecrnfti, Fras. nij. 



\f>. Xerus {Paraxerus) pi/rropics, Fi-. Cuv. m^. 



16. Xerus {Eoxerus) herdmorei, Ely., juv. iiij. 



17. ,, ,, middle age. m^. 



18. „ „ old. m^. 



19. Pteromys leucogenys, Teium. nij. 



20. Scmropterus pearsoni, Gr. ru.,. 



21. Sciuro'pterus horsfieldi, Waterh., type. iiij. 



22. Xerus {Paraxerus) pyrropus anerythrxis, Thos. lUj. 



23. A'(?>-«s {Paraxerus) cepapi, Smith, m^. 



24. Xerus (Paraxerus) isabella, Gr. m.,. 



Plate X. 



Fig. 1. Sciuropterus alba.nensis, n. sp. (Middle Miocene of Grive-Saint-Alban.) 

 Upper incisor, a, I'rom the outer, b, from the inner, c, from the 

 anterior side. 



2. Xerus {Eoxerus) grivensis, n. sp. (Middle Miocene of Grive-Saint' 



Alban.) Left mandibular ramus, nat size. 



3. mj, m.^, mg, of the same ; magn. f . 



4. Sciurus spermophtlinus, Dep. Pi, m,, va^ sup. sin. ; magn. f. 



5. ,, „ Anterior view of inf. incisor ; magn. 



6. „ „ Left mandibular ramus, inner view, nat. 



size. 



7. „ „ Left mandibular ramus, outer view, nat. 



size. 



8. ,, „ Pi, mi, mg, nig, inf. sin., upper view; 



magn. \. 



9. ,, ,, The same as fig. 8, inner view ; magn. f. 

 10. Nanvosciurvs conchinus, Thos. (Isabella. Basilan, Philippine.-;), type, 



(B.M. 1940 a. 1876/10 . 4.7.) d^, m^, m„, mg, inf. sin. ; magn. f . 



Plate XI. 



Fig. 1. Sciurojiferus tephromelas, Giinth. Malay Peninsula. (B.M. 1885/8. 

 1.126.) Left mandibular ranms. Nat. size. From the inner side. 



2. The same, m^ ; magn. \. 



3. Sciuropterus albaiiensis, n. sp. (Middle Miocene of Grive-Saint-Alban.) 



Left mandibular ramus, from the inner side ; nat. size. 



4. The same fiom the outer side ; nat. size. 



5. The grinding-teeth of the same, upper view ; magn. f. 



6. Nannosciurvs miiiuius, Du Cliaillu. W. Africa. (B.M. 1794 a. 



1861/7 . 29.19.) Superior grinding-teeth of tlie right side (pj, m^, m^, 

 mg); magn. J. 



7. Nannosciurus concinnus, Thos., juv. Superior grinding-teeth of the right 



side (d|, mj, m^, m^) ; tuagn, ?. 



