Cope.] Olo [Dec. 7, 



Measurements of superior teeth. M. 



Length of dental series, including canine 0273 



" from canine to rn. i, exclusive .0130 



Length of true molar series 0100 



Diameter of P-m. iiij anteroposterior 0028 



t transverse 0025 



•n- .„ e t> • f anteroposterior 0030 



Diameters of P-m. iv J l 



{ transverse 0042 



Diameters M . i J anteroposterior 0038 



<- transverse 0048 



Diameters M. ii { anteroposterior 0039 



I transverse 0059 



Diameters M. iiij anteroposterior. 0015 



t transverse 0024 



Upper Puerco ; D. Baldwin. 



Indrodon malaris, gen. et sp. nov. 



Char. gen. Family Anaptomorphidae, suborder perhaps Lemuroidea, as 

 indicated by the dentition only. It differs from Anaptom^rphus in three 

 points. First, there are three superior incisors ; second, the first (third) 

 premolar has no internal lobe ; and third, there is a distinct posterior in- 

 ternal tubercle on the first and second superior molars. 



The animals of the Eocene period of the family of the Adapidce, may be- 

 long to the Lemuroidea, but the evidence which I have derived from the 

 feet of Pelycodus* has led me to refer themf to the Insectivorous division 

 of the Bunotheria, to the neighborhood of the Tupseidse and Erinaceidse. 

 At the same time I retained provisionally the genera with three and two 

 superior premolars in the suborder Lemuroidea, although the foot struc- 

 ture of these extinct genera is yet unknown. I also indadvertently defined 

 the Lemuroidea as having quadrituberculate superior molars, a character 

 which I well knew to be wanting in various extinct and recent genera 

 where they are tritubercular. Two families were proposed! for the Eocene 

 lemuroids, which are defined as follows : 



Superior premolars three Mixodectidce. 



" " two Anaptomorphidm. 



The genera of the first named family are defined as follows : 

 I. Canine teeth large and lateral, well separated. 

 First superior premolar without internal lobe ; superior true 



molars tritubercular with cingula Tricentes. 



II. Canine teeth median in position or much reduced in size. 

 «. Last inferior premolar without internal tubercle. 

 Inferior premolars all one rooted ; canine and incisor small. . Ne&rolemur. % 



* Report of U. S. G. G. Survey W. of 100th Mer. G. M. Wheeler, iv, p. 140. 

 f Proceedings Academy Natural Sciences, of Philadelphia, 1883, p. 78-80. 

 I Filhol Rech. Phosph. Quercy. 





