1902.] NATURAL SCIENCES OF PHILADELPHIA. 385 



earlike, somewhat as they are in T. polyphemus, but uot so narrow 

 as they are in the latter. From the midline behind, the border is 

 acute around the lobules and as far forward as about 35 mm. be- 

 hind the hypo-xiphiplastral suture. Here it rather suddenly be- 

 comes broadly rounded, as shown by the cross-section (fig. 4). At 

 the suture mentioned the thickness of the bone is 30 mm. The 

 wall thus formed continues backw^ard, descending somewhat, and 

 meets the midline 15 mm. or more in front of the bottom of the 

 notch. Fig. 5 represents a section through one of the lobules in a 

 direction from its tip toward the centre of the hinder lobe. The 

 greatest thickness is 22 mm. 



The femoro-anal sulcus runs from the midline outward, so as to 

 make the outer end of the anal scute somewhat wider than the 

 mesial end. Antero-posteriorly, at the middle of its width, the 

 scute is 40 mm. long. 



It is probable that the deposits in which this tortoise was found 

 belong to the Pliocene. 

 Terrapene eurypygia (Cope). 



This species was described by Prof. Cope in 1869 (Trans. Amer. 

 Philos. Soc, XIV, new series, p. 124), the type specimen being a 

 small portion of the rear of the carapace. It was regarded as distinct 

 from the common Terrapene of the region on account of the appar- 

 ently greater width of the vertebral scutes. This seemed to be 

 indicated by the contact of the last vertebral with the ninth mar- 

 ginal scute. No figure Avas made of the specimen, and nothing 

 in addition was afterward published. The type has been examined 

 by the writer. 



In 1899 (Jour. Pliila. Acad., XI, pp. 193-267) Prof. Cope 

 described various remains of the vertebrates which had been col- 

 lected by ^Messrs. Dixon and ]\Iercer in the Port Kennedy cave. 

 Among other things there were three tortoises found, viz., Clemimjs 

 insculpta, C. pererassa and Toxaspis (Terrapene) anguUiulata. 

 There belonged to the collection, however, another box- tortoise 

 which was not meniioned by Cope, and was perhaps not seen by 

 him. Through the kindness of the management of the Academy 

 this has been put in my hands for examination. These remains 

 consist of almost the whole of the plastron and of various frag- 

 ments of the carapace and the right humerus. 



An examination of these bones sliowod that they holoiiged either 

 25 



