ELASMOBRANCHII. 5 1 



Formation and locality. The following teeth are all from the 

 Cretaceous and Eocene marls, without formation : New Jersey 

 5 (C. C. Abbott), 2 (E. D. Cope) ; Monmouth County 15 with- 

 out donor, 68 (J. H. Slack, J. Parke, J. H. Powell, Jr., and Ab- 

 bott), 17 (P. D. Knieskern), 3 (Knieskern and Abbott) ; Deal 

 84 no donor; Long Branch 11 no donor, 14 (H. C. Chapman) ; 

 Shark River 1 (T. A. Conrad) and 3 (Knieskern) ; Farming- 

 dale 6 (H. A. Pilsbry) ; Burlington County 10 1 (Conrad) and 8 

 (C. Budd); Pemberton 33 (Budd) ; Vincentown 188 (T. A. 

 Bryan); Medford 1 (L. Woolman) ; Mullica Hill 1 (W. M. 

 Gabb) ; Bridgeton 5 (Budd) and 1 (C. B. Barrett). The last 

 are evidently Miocene. 



In the Geological Survey collection I have examined the fol- 

 lowing teeth : From the Wenonah sand a little less than 1 mile 

 southeast of Cranford's Corner 4 (J. Longstreet's pit), Man- 

 asquan marl 1 mile south of Farmingdale 11 mostly fragmentary, 

 Shiloh [Miocene, K.] 4 (E. Davis), Woodbury clay east of 

 Matawan 3 (D. Farry's brickyards), middle marl [Manasquan, ? 

 K.] at Riddleton 2 (Hackett's pits), upper marl [Manasquan, 

 K.] at Poplar 7, and 4 without data. 



[The geological range of these specimens is from the Wood- 

 bury clay, Cretaceous, into the Miocene, K.] 



Lamna mudgei Cope. 



Lamna mudgei Cope, Rep. U. S. Geol. Surv. Terr. Hayden, II. 1875, P- 2 97> 

 PL 42, figs. 11-12. Niobara epoch of Kansas. Greensand No. 4, of New 

 Jersey. 



Indicated by three teeth from the Niobara epoch of Kansas, 

 and one from the greensand, "No. 4," of New Jersey. These 

 teeth are rather stout, especially at the base, and the crown not' 



Fig. 18. — Lamna mudgei Cope. (From Cope.) 



