1870.] -^^^ [Cope. 



the lumbosacral vertebrte of the specimen which is above noticed. These 

 were submitted to me at Raleigh. They belong to a right whale, or one 

 nearer to Balasna than Balaenoptera. They are in fact identical in charac- 

 ter with those of the species Mesoteras kerrianus, and belong probably to 

 it. The following is a description of one of them from the posterior dor- 

 sal or anterior lumbar region. 



Median line below, obtusely keeled, sides a little concave. Articular 

 face with a large median elevated area, which is coarsely obsoletely ru- 

 gose ; the marginal area exhibits fine concentric rugosities. 



Measurements. 



Inches 



Length centrum 7 



' ' basis of diapophysis 4. 5 



Depth " " 3.25 



' ' articular face 8.5 



Width " " - 9. 



Thickness of epiphysis .75 



The epiphyses are free and the individual is young. 

 A vertebra of similar character to, and rather larger size than any here 

 described, was obtained by the writer near Nahumta, Wayne Co., IST. Ca. 

 The species would not appear to be rare. 



This wliale is named for Prof. Wm. C. Kerr, of Raleigh, who has vita^ 

 lized the State survey, and is prosecuting it with advantage to all branches 

 of science that lie within its scope. 



SU8, Limaens. 

 Sxjs ?sp. 

 Represented by the crown of an inferior posterior molar of an animal 

 not fully grown. Both extremities are broken off, but sufficient remains 

 to indicate the genus of the animal beyond doubt. 



The two principal lateral and adjacent median tubercles of the tooth 

 present the characters of the same parts in the Sus scroplia, and indicate 

 a species of about the same size. A section of each lateral lobe is there- 

 fore slightly trifoliate, and the two inner ridges, whose sections constitute 

 the lobes, are transversely deeply wrinkled. Tlie margins of the broader 

 outer lobes are also wrinkled, the wrinkles sometimes continued into shal- 

 low grooves on the outer face of the same. The convex outer face is 

 marked by delicate concentric linear grooves, the apex of the lobe being 

 the centre of the arcs. The anterior and posterior median tubercles are 

 much the same as in S. scroplm; in the former the crown is nearly three 

 times as wide as long, as in S. scroplia. The posterior median tubercle 

 is sub-trilobed, and a little broader than long; surfaces of both tubercles 

 rugose plicate. A pair of shallow longitudinal grooves on. the outer face 

 of each lateral tubercle. 



The inferior face of the crown presents a not uncommon peculiarty in 

 the isolation and deep conic form of the prolongations of the pulp cavity, 

 which correspond to the tubercles. In another specimen which I refer 

 to the S. scropJia, these prolongations are connected by gi'ooves which 

 enclose dia,mond-shaped interspaces.' 



