194 VERTEBRATE REMAINS, PORT KENNEDY BONE DEPOSIT. 



without such revision as the lapse of time may have made in some degree desirable. In this form 

 it is believed to be more truly a memento of one whose work places him in the first rank of 

 American naturalists, than if it were revised or added to even by those who would willingly per- 

 form the service as a labor of love. With the same desire that the contribution should bear the 

 impress of no other mind or hand, the remains of new species have been illustrated, as far as 

 possible, by photography, although this method foregoes the advantage of such emphasis of distinctive 

 characters as can be given by an accomplished draughtsman working under proper supervision. 



While this is the last of the brilliant series of contributions to science published by Prof. 

 Cope under the auspices of the Academy, it is gratifying to know that his memory will be per- 

 petuated in the department with which he was most closely associated by his provision for the 

 foundation of a Curatorship of Paleontology) a provision which not only places on record his 

 interest in the institution with which he was associated for upward of thirty-five years, but also 

 secures the continuance of the work to which he devoted, with such distinguished success, the best 

 years of his life. 



Edward J. Nolan. 



REPTILIA. 



TESTUDINATA. 

 CLEMMYS Wagl. 

 Clemmys insculpta LeConte. 



Fragments of three, and possibly other individuals, are referable to a species 

 which I cannot distinguish from the existing one above named. There are parts 

 of the anterior lobe of the plastron of three individuals ; three fragments of the 

 posterior lobe ; the adjacent parts of the hyoplastral and inguinal marginal of the 

 left side ; with pieces of the plastron, and several marginal bones. As compared 

 with the corresponding parts of Clemmys insculpta the mediam lip of the anterior 

 lobe of the plastron is a little more produced. The inguinal space is also somewhat 

 wider. The agreements are, however, so general that I make the identification as 

 above, awaiting more perfect material before regarding it as final. The marginal 

 bones show that the free border is not serrate. 



Clemmys percrassus Cope (PI. XVIII, figs. 1-1^). [Type No. 152, Mus. Acad. Nat. Sci.] 



This species is represented by a part of the posterior lobe of the plastron, parts 

 of the middle plastron, and some marginal bones of the bridge, from one locality ; 

 and from another, but near locality, three marginal bones (one from the axilla) and 

 some pieces of the plastron. These may all belong to one individual. From the 

 first-mentioned locality a few pieces of the plastron and a marginal bone of a much 

 larger individual were obtained. 



These specimens represent a species different from C. insculpta or any other 

 known to me. The absence of characteristic parts, as the free extremities of the 

 plastral lobes, etc., renders it difficult to define the species properly. The largest 

 fragment of the first-mentioned specimen consists of the greater part of the right 

 post-abdominal bone. This differs from the corresponding part of other species. 

 Although the bone is not complete to the middle line, traces of the median suture 

 are present. These show that the plastron is of no great width, or about equal to 

 that of C. insculpta, while the post-abdominal is three times as thick. In another 



