114 PROCEEDINGS OF THE ACADEMY OF 



Black's Fork. The specimen apparently indicates an animal allied to the 

 Raccoon, than which it was nearly a third smaller in size. The ramus con- 

 tained a series of seven molars, immediately succeeding the canine, without 

 hiatus. A.11 the molars remain except the first, and this like the succeeding 

 one was inserted by a pair of fangs. 



The teeth in the specimen are much worn, so that their original character 

 is obscure. The crowns of the premolars appear to have been nearly like 

 those of the Raccoon. In the true molars the postero-internal cusp of the 

 crown existing in the latter, appears to have been but feebly developed in the 

 extinct animal. 



The body of the jaw, though much shorter, is absolutely deeper than in the 

 Raccoon. The coronoid process has been comparatively narrow ; the exter- 

 nal masseteric fossa feeble, and the condyle is remarkably small, not being 

 more than a third in size of that of the Raccoon. 



The measurements of the specimen are as follow : length from symphysis 

 to back of condyle, 2 J inches ; space occupied by the series of seven molars, 

 16 lines ; depth of lower jaw below the first true molar, 6 lines. 



For the animal the name of Notharctus texebrosus was proposed. 



Remains of Pal&osyops paludosus, have since been received from Henry's 

 Fork of Green River, Wyoming. 



The following gentlemen were elected members : Chas. K. 

 Mills, M. D. ; J. Solis Cohen, M. D. ; Bushrod H. James, M. D., 

 and Mr. J. Blodget Britton. 



On favorable report of the Committees, the following papers were 

 ordered to be published : 



On the Stipules of Magnolia and Liriodendron. 

 BY THOMAS MEEHAN. 



An examination of the stipules of Magnolia afford some highly interesting 

 facts ; most, or perhaps all of which are known to leading botanists, but 

 which do not appear to be as generally known as they deserve to be ; and 

 which facts may have a more intimate bearing on many of the questions con- 

 nected with the laws of development than is suspected. 



In most species of Magnolia a scar peculiar to the genus exists on the petiole. 

 This scar is elevated somewhat above the surrounding tissue, as if the matter 

 forming it had been laid on the surface after the rest of the petiole had been 

 formed. The tint of green is not the same as the rest of the petiole, but it is 

 always of the same tint as that of the leaf blade. In Magnolia macrophylla the 

 petiole and under surface of the leaf is gray ; the leaf blade is pale green on 

 the upper surface. The surface of the scar is pale green, corresponding to the 

 surface of the leaf blade. The whole appearance of the scar is such as if a 

 portion of a leaf blade had been grafted by its under surface on the petiole. 



On the upper point of the scar next the leaf blade are two small articulation 

 points, where the membranaceous stipules finally parted from the leaf. Exam- 

 ining aleaf before these stipules have fallen, the main veins forming the ske- 

 leton of the stipules are found connecting with these, articuli, and, spreading 

 out, diverge downward toward the base of the leaf. In separating at maturity 

 from the petiole, they part first from the base, and last from their place of ar- 

 ticulation. Their weakest hold is the point farthest away from what thus ap- 

 pears to be their source at the apex of the scar. 



Magnolia Frazeri elongates its petiole beyond the stipule several iuches gen- 

 erally. The leaf blade then exhibits the auricle so well known in this species. 

 The structure of this auricle is similar to the stipules in M. macrophylla or 31. 

 tripetela. The veins start out in nearly as clote a fascicle as in these stipules, 



[Oct. 



