253 APPENDIX. 



Family 15. Tardigrada. All having teeth; 18 molars 

 at most; no incisors; snout short; limbs much elongated. 



Family 16. Effodientia. Some edentous; some having 

 incisors; molars from 26 to 98; snout elongated; limbs well 

 proportioned to the body. 



* Incisors and molars. ** Molars. *** No teeth at all. 



% Ungulata. %% Vermilinguia. 



Section II. Ungulata. 



Nails hoof-shaped, covering the last phalanges of the 

 digits: no clavicles; the fore-arm always in a state of pro- 

 nation. 



ORDER VII. Pecora. 



Rarely three kinds of teeth; no incisors above; feet didac- 

 tyle, with two hoofs; the metacarpal and metatarsal bones 

 united; four stomachs; ruminating. 



Family 17. Cavicornia. No canine teeth; both sexes 

 having permanent horns, composed of a solid nucleus, grow- 

 ing from the frontal bones, and of an elastic thin case. 



* Lacrymatories; nucleus entirely solid. ** No lacryma- 



tories; nucleus cellulous. 



Family 18. Devexa. No canine teeth; both sexes with 

 permanent solid horns covered by a skin. 



Family 19. Capreoli. No canine teeth; in general the 

 males only having caducous solid, branched horns, cover- 

 ed at least for a time by a hirsute skin. 



Family 20. Tylopoda. With canine teeth; hornless. 



ORDER VIII. Bellua. 



Generally three kinds of teeth; stomach simple; or di- 

 vided into several pouches, but not for rumination. 



Family 21. Solidungula. Feet apparently monodac- 

 tyle. 



