FOSSIL AND EECEXT LAGOMOEPHA. 517 



Fig. 3. Titunoiiiys Funtmimsi (Dep.). A third isolated specimen of the same, slightly more worn by 



attrition than the former *. 

 Fig. 4. Titunomijs Fontannesi (Dep.). A fourth isolated specimen of the same, much worn *. 

 Fig. 5. Prolagus sardus (Wagn.), var. corsicanus. The two inferior deciduous molars (d. 2, d. 1) from 



a left mandibular ramus. The first true molar (m. 1) of the specimen, not figured, shows a 



vestige of the terminal cusp (" t " = hypoconulid). 

 Fig. 6. Prolagun aiiinc/ensis (Kon.). Left mandibular ramus of young individual, showing the two 



deciduous (d. 2, d. ]) and the two true molars (m. 1, m. 2). La Grivc-Saint-Ali)au. Br. 



Mus. G. D. No. M523G. 

 Fig. 7. Titanoinys Fontannesi (Dep.). Complete series of the lower cheek-teeth (p. 2-m. 3) in a left 



mandibular ramus. Adult. Br. Mus. G. D. No. 5267 a. 

 Fig. 8. Caprolagus [Onjctolagus) cuniculvs (Linn.). The two lower premolars (p. 2, p. 1), in a right 



mandibular ramus of an immature specimen. Herefordshire. W. E. de Winton, Esq. 

 Fig. 9. Pro/uf/tis (eninycnsis (Eiin). Complete series of inferior cheek-teeth (p. 2-m. 2), left side. 



Adult *. 

 Fig. 10. Titanomys Fontannesi (Dep.). Posterior premolar (p. 1) and anterior true molars (m. 1, m. 2) 



in a left mandibular ramus of an immature specimen, p. 1, being still in the socket, has not 



yet come into attrition. Br. Mus. G. D. No. 52G~ b. 

 Fig. 11 «. Titanonnjs visenoviensis, 11. v. Mej. Isolated upper postei'ior premolar (p. 1), or anterior 



molar (m. 1?, right side. Lower Miocene of Weisenau. Br. JIus. G. D. No. 7217 c. 

 Fig. 11 b. Titanomys visenoviensis, H. v. Mey. Probably posterior premolar (p. 1) or anterior molar 



(m. 1). Left side. Lower Miocene of Weisenau. Br. Mus. G. D. No. 7217 d. 

 Fig. 12. Prolagus wningensis (Kon.). Anterior premolar (p. 2) from a left mandibular ramus. 

 Fig. 13. Caprolagus Lacosti (Pomel). Anterior premolar (p. 2) from a left mandibular ramus. Upper 



Pliocene of Perrier (France). Br. Mus. G. D. No. 27618. 

 Fig. 14. Lagopsis rents (Hens.). The tAvo posterior true molars (m. 2, m. 3) from a right mandibular 



ranms. La Grive-Saint-Alban. Br. Mus. G. D. No. 5263. 

 Fig. 15. Titanomys Fontannesi (Dep.). Upper view of left mandibular ramus, exhibiting the empty 



alveoli of the five cheek-teeth *. 

 Fig. 16. Titanomys Fontannesi (Dep.). Posterior premolar (p. 1) and the two auteriot true molars 



(m. 1, m. 2) in a right mandibular ramus. Empty alveoli of p. 2 and m. 3. Br. Mus. G. D. 



No. M5267 c. 

 Fig. 17. Caprolagus {Nesolagus) Netscheri (Sehleg. & Jent.). Posterior upper premolar (p. 1), right 



side, from the skull in the Br. Mus. Z. D. No. 92.5.24.1. Sumatra. 

 Fig. 18. Caprolagus sivalensis, Maj. The two inferior premolars (p. 2, p. 1), from a fragment of the 



left mandibular ramus. Pliocene, Siwalik Hills, India. Cautley Coll. Br. ^lus. G. D. 



No. 16529. (By an inadvertence of the artist, the anterior side of the teeth is turned to the 



right — their outer side being directed upwards in the plate — instead of to the left, as in all the 



other figures of mandibies and teeth of the left side.) 

 Fig. 19. Caprolagus {Ronterolagus) A\'lsotii (Merr.). Anterior premolar (p. 2), from a right mandibular 



ramus. Mount Popocatej)etl (Mexico). Br. Mus. Z. D. 

 Fig. 20 a, b. Caprolagus {Sylvilagus) palustris (Baehm.). Lower anterior premolars (p. 2), right {a) and 



left [b), from a specimen in the Br. Mus. Z. D. 

 Fig. 21. Titanomys Fontannesi (Dep.). The posterior premolar (p. 1) and the two anterior true molars 



(m. 1, m. 2) in a fragment of the right mandibular ramus. 

 Fig. 22. Caprolagus hispidus (Pears.). The two premolars (p. 2, p. 1) from tiie right mandibular ramus 



of an immature specimen in the Br. Mus. Z. D. 

 Fig. 23. Caprolagus Iiispidu^i (Pears.). Complete series of lower cheek-teeth (p. 2-m. 3) from a rio-ht 



mandibular ramus of an adult specimen in the Br. Mus. Z. D. 



