LIST OF PLATES.

Plate [I.] Desmodus D’Orbignyi.
[II.] Phyllostoma Grayi.
[III.] Vespertilio Chiloensis.
[IV.] Canis antarcticus.
[V.] —— Magellanicus.
[VI.] —— fulvipes.
[VII.] —— Azaræ.
[VIII.] Felis Yagouaroundi.
[IX.] —— Pajeros.
[X.] Delphinus Fitz-Royi.
[XI.] Mus longicaudatus.
—— gracilipes.
[XII.] —— elegans.
—— bimaculatus.
[XIII.] —— flavescens.
—— arenicola.
[XIV.] —— Magellanicus.
—— brachiotis.
[XV.] —— Renggeri.
—— obscurus.
[XVI.] —— longipilis.
[XVII.] —— xanthorhinus.
—— nasutus.
[XVIII.] —— tumidus.
[XIX.] —— Braziliensis.
[XX.] —— micropus.
[XXI.] —— griseo-flavus.
[XXII.] —— xanthopygus.
[XXIII.] —— Darwinii.
[XXIV.] —— Galapagoensis.
[XXV.] —— fuscipes.
[XXVI.] Reithrodon cuniculoïdes.
[XXVII.] —— chinchilloïdes.
[XXVIII.] Abrocoma Bennettii.
[XXIX.] —— Cuvieri.
[XXX.] Didelphis crassicaudata.
[XXXI.] —— elegans.
[XXXII.] —— brachyura.
[XXXIII.] Skulls, and molar teeth of various species of Rodents.
Fig. 1. a. Skull of Abrocoma Cuvieri—natural size.
— 1. b. Side view of ditto.
— 1. c. Ramus of lower jaw—outer side.
— 1. d. Lower jaw seen from above.
— 1. e. Molar teeth of the upper jaw magnified.
— 1. f. ditto of lower jaw.
— 2. a. Skull of Reithrodon cuniculoïdes.
— 2. b. Incisors of the upper jaw magnified.
— 2. c. Molar teeth of the upper jaw magnified.
— 2. d. ditto of the lower jaw.
— 2. e. ditto of upper jaw of a younger specimen.
— 3. a. Portion of a skull of Mus Braziliensis.
— 3. b. ditto, view of palate.
— 3. c. Molar teeth of the upper jaw magnified.
— 3. d. ditto of lower jaw.
— 4. a. Molar teeth of lower jaw of Reithrodon typicus magnified.
— 5. a. Molar teeth of the upper jaw of Mus canescens.
— 5. b. ditto of under jaw.
— 5. c. Skull of ditto.
— 5. d. Posterior molar of the lower jaw more worn than in 5. b.
— 6. a. Molar teeth of the lower jaw of Mus longipilis.
— 6. b. Molar teeth of the upper jaw.
— 7. a. Skull of Mus nasutus.
— 7. b. Molar teeth of upper jaw.
— 7. c. ditto of lower jaw.
— 8. a. Skull of Mus Galapagoensis.
— 8. b. Molar teeth of upper jaw.
— 8. c. ditto of lower jaw.
[XXXIV.] Skulls and molar teeth of various species of Rodents, &c.
Fig. 1. a. Skull of Mus longicaudatus—natural size.
— 1. b. Molar teeth of upper jaw of ditto.
— 1. c. ditto of lower jaw.
— 1. d. Ramus of lower jaw—natural size.
— 2. a. Skull of Mus elegans—natural size.
— 2. b. Molar teeth of upper jaw.
— 2. c. ditto of lower jaw.
— 3. a. Skull of Mus bimaculatus—nat. size.
— 3. b. Molar teeth of upper jaw.
— 3. c. ditto of lower jaw.
— 3. d. Ramus of lower jaw—natural size.
— 4. a. Skull of Mus gracilipes.
— 4. b. Molar teeth of upper jaw.
— 4. c. ditto of lower jaw.
— 4. d. View of the under side of the tarsus.
— 5. a. First and second molar teeth of upper jaw of Mus flavescens.
— 5. b. Two posterior molar teeth of the lower jaw of ditto.
— 6. a. Molar teeth of the upper jaw of Mus Magellanicus.
— 6. b. ditto of lower jaw.
— 7. a. Skull of Mus arenicola.
— 7. b. Molar teeth of upper jaw.
— 7. c. ditto of lower jaw.
— 7. d. Ramus of lower jaw.
— 8. a. Molar teeth of upper jaw of Mus brachiotis.
— 8. b. Two posterior molars of lower jaw.
— 9. a. Molar teeth of upper jaw of Mus obscurus.
— 9. b. ditto of lower jaw.
— 10. a. Ramus of lower jaw of Mus nasutus.
— 11. a. Molar teeth of lower jaw of Mus tumidus.
— 12. a. Ramus of lower jaw of Mus Braziliensis.
— 13. a. Molar teeth of upper jaw of Mus micropus.
— 13. b. ditto of lower jaw.
— 14. a. Ramus of lower jaw of Mus Galapagoensis.
— 15. a. Molar teeth of upper jaw of Mus griseo-flavus.
— 15. b. ditto of lower.
— 16. a. Molar teeth of upper jaw of Mus xanthopygus.
— 16. b. ditto of lower jaw.
— 17. a. Molar teeth of upper jaw of Mus Darwinii.
— 17. b. ditto of lower.
— 18. a. Molar teeth of upper jaw of Mus Gouldii.
— 18. b. ditto of lower.
— 19. a. Molar teeth of upper jaw of Mus insularis.
— 19. b. ditto of lower jaw.
— 19. c. Portion of ramus of lower jaw.
— 20. a. Skull of Reithrodon chinchilloïdes—natural size.
— 20. b. ditto, viewed from beneath.
— 20. c. ditto, side view.
— 20. d. Ramus of lower jaw—natural size.
— 20. e. Molar teeth of upper jaw.
— 20. f. ditto of lower.
— 21. a. Skull of Reithrodon cuniculoïdes, viewed from beneath.
— 21. b. ditto, side view of fore part.
— 21. c. Ramus of lower pair.
— 22. a. Hinder part of ramus of lower jaw of Abrocoma Bennettii.
— 23. a. Skull of Abrocoma Cuvieri, viewed from beneath.
— 23. b. Lower jaw of ditto, viewed from beneath.
— 23. c. Ramus of lower jaw, inner side.
— 24. a. Ramus of lower jaw of Octodon Cumingii, inner side.
— 25. a. Skull of Didelphis crassicaudata.
— 25. b. ditto, viewed from beneath.
— 25. c. Side view of fore part of skull.
— 25. d. Ramus of lower jaw, outer side.
[XXXV.] Skulls of various animals.
Fig. 1. a. Skull of Desmodus D’Orbignyi.
— 1. b. ditto, viewed from beneath.
— 1. c. ditto, side view.
— 1. d. Front view of the incisors, and canines of upper jaw magnified.
— 1. e. Side view of do. and the molar teeth.
— 1. f. Front view of incisors and canines of lower jaw, magnified.
— 1. g. Side view of ditto, and molar teeth.
— 2. a. Skull of Phyllostoma Grayi.
— 2. b. Side view of ditto.
— 2. c. } Front view of incisors of upper and
— 2. d. } lower jaws magnified.
— 3. a. Skull of Vespertilio Chiloensis.
— 3. b. Side view of ditto.
— 3. c. Front view of upper and lower incisors magnified.
— 4. a. Skull of Lutra Platensis.
— 4. b. Under view of ditto.
— 4. c. Side view of fore part of ditto.
— 4. d. Upper view of lower jaw of ditto.
— 5. a. Skull of Didelphis elegans.
— 5. b. Under view of ditto.[[1]]
— 5. c. Side view ditto.
— 5. d. Ramus of lower jaw, outer side.
— 5. e. The same, viewed from above, and magnified.