120 ALLEN'S NATURALIST'S LIBRARY. 



of the posterior molar inconspicuous. The lower molars have 

 two pairs of obliquely placed cusps, connected by transverse 

 ridges, anterior and posterior, with an oblique ridge running 

 forwards and inwards from the outer hind cusp. The hind- 

 most lower pre-molar has an internal cusp ; the lower incisors 

 have upright spatulate crowns like those of true Apes. 



Several species of this genus have been described. ADAPIS 

 PARISIENSIS (with the synonyms of Aphelotherium duvernoyi, 

 Gervais, and Palaolemur betillei, Delfortrie) is one of the best 

 known, and its remains have been found in Upper Eocene 

 strata at Egerkingen, in Switzerland, at Sainte Neboule de 

 Beduer, and in the Paris Gypsum, in France, as well as in 

 England. It " more nearly resembles the Indo- African Lemurs, 

 and not those of the island of Madagascar, or of the extreme 

 east, having no near relationship with the Tarsius, the Aye-Aye, 

 or the Indris, and not much with the true Lemurs." (Flower.) 

 From the Eocene of Switzerland comes A. LEMUROIDES. 

 ADAPIS MAGNA (Filhol) is larger than the preceding species, 

 has a larger face, and a greater constriction between the 

 cerebral and facial regions of the skull. It has been found in 

 the phosphatic deposits at Raynal, in France. ADAPIS ANGUS- 

 TIDENS (Filhol), from the Quercy Phosphates of France, is dis- 

 tinguished by the structure of its molars, and by the great size 

 of its two anterior pre-molars. A.TENEBROSUS (Leidy) has a large 



lower canine. A. MINOR (Filhol) is an additional species. 







GENUS TOMITHERIUM. 



Tontitherium, Cope, Vert. Bridg. Eoc. Wyom., p. 2, 1872. 

 Limnot/ierium, Marsh, Am. Journ., Sci., 1871, ii., p. 43 (in 



part). 

 This genus, which is allied to Adapts, is characterised by 



