428 lastlower molar commonly bilobed. 1 Dorso-luuibar vertebrae never fewer than twenty-two, usually twenty-three in the existing species. Nasal bones expanded posteriorly. An alisphenoid canal. Femur middle or third digit on bot any of the others, and symrr. of the ungual phalanx bein; This may be the only fun< fourth may be subequally d the Tapirs and many extinct on the fore limb, but its pres symmetrical arrangement around the median line i Traces of a hallux have onb ancient and primitive forms like surface above for artu distal surface is flattened i extent with the navicular th-, is of comparatively less im] tyles. The calcaneum does end of the fibula. The st large and capacious, the plac inguinal. The very distinct minor grou are divided in the later periods the knowledge already gained oi order, so closely united by conr make any satisfactory classificati what might be expected, and wi other groups if we knew as muc" that of the Perissodactyles. It is purposes to have some arrangen natural, the most convenient dr only by these organs that man} the structure of the lower molar make three primary divisions, ei at the present time: (A) those molars are disposed in transver those in which the crowns of t pair of crescents, as in Ehii crowns of the lower molars arc with the addition of inner lob< [UNGULATA. posterior is smaller than the anterior, and they are united by their external borders; those of the mandible are distinct and only con nected by a feeble diagonal crest, the last bearing a talon or rudiment ESTABLISHED 1860. J. DEWING & CO. 42 O & 422 Bxassli St. J^ow arriving, for your library, for sale on caq suit you all, as we have the editions and fine editions of DICKENS WORKS, THACKERAY S WORKS, BULWER, WAVERLY, HAWTHORNE, WASHINGTON IRVING, COOPER, EMERSON, CARLYLE, PRESCOTT, BRITISH POETS, AMERICAN POETS, DUMAS, LITTLE CLASSICS, oi Jufccnifc ENCYCLOPAEDIA HRITANNICA, (English edition at the reduced prices.) As these forms are all modi pattern, transitions in certain or in many cases, and, as before im] dactyles into Tapiroid, Rhinocerc to the pattern of their molar tee the real affinities of the genera, b a convenient provisional arrange: A. TAPIKOI Lower molars bilophodont. Family Lor Both upper and lower true smaller and simpler than the t anterior and three on the postei large number of more or less impc ranging from the size of a Rabl the earliest in time and most known Perissodactyles. It is pos known or the still undiscovered n: other types of the order have bee been found in Europe only in the 1 in North America they appear to 1 date. The genus Hyracotlierium for a small animal, no larger thai found in the London Clay at Herr apparently of the same species wr under the name of PhilopJius mdp the European continent have b Lophiothcrium. These have all t c T, P T, in f = 44. The posterior 1 genus Lophiodon (Cuvier, 1822) co size and later geological period (Middle~or* the dentition was so far specialized as to havVIosl molar of both jaws, the formula being i , c {, p f, m -|=^--. transverse ridges of the upper molars are placed obliquely, the 1 These dental characters are not strictly applicable to the most ancietit forms. BRYANT S HISTORY OF THE UNITED STATES, CuizoT s HISTORY OF. FRANCE, RAMBOUD-S HISTORY OF RUSSIA, CUIZOT-S HISTORY OF ENGLAND, EARTH AND INHABITANTS, (BY RECLUS.) FINE ILLUSTRATED NATURAL HISTORY. LONDON ART JOURNAL, FINE ILLUSTRATED EDITIONS OF SHAKESPEARE, TURNER GALLERY, PICTURESQUE AMERICA AND EUROPE. OF TflE DORE ILLUSTRATED cp, 3nbia 2oof. Etchings an Satin, VARIETY DF STEEL EflGIplNGS AND ETCHINGS FDR FRAMING, (Ball and examine while our stoc^ is large. J. DEWING & CO., Above Kearny St, California Jheatre Buying. 4 & 4 Bush St., S. F. AGENTS WANTED. Men and women who wish to better their condition subscription House on the coast) for terms and territory. | I 1C | am vui} 1 "Mii^ UlUI 1 Ullll .^ceiaiizca torms, quite out of the line of descent of any of the existing Perissodactyles, and the steps by which they are connected with the rest of the group have not yet been discovered. Of the larger species, M patachonica, the skeleton
is completely known. It had the full number of forty-four