_\KT. 12 CLASSIFICATION OF CONODONTS ULRICn AND BASSLER 51 



Occurrence. — Mississippi an (Hardin sandstone) : Mount Pleasant, 

 Tenn. 



Cotypes.—C^t. No. 11005, U.S.N.M. 



PALMATOLEPIS PECULIARIS, new species 

 Plate 8, figs. 11, 12 



Our illustrations are of the upper surface of opposite plates, 

 one with peculiar anterior process which if norma] has been lost 

 on the other specimen. Species distinguished by complete or partial 

 obsolescence of the forks of the carina and the general peculiar shape. 

 Surface finely granulose, the granules being usually arranged in 

 neat lines running from the median crest to the outer edges. Large 

 node at upper extremity of crest and a row of smaller ones extend- 

 ing nearly to the posterior extremity. The relations of the species 

 seem to be with P. extralohata the anterior process being correlated 

 with the extra lobe in that species. 



Occurrence. — Mississippian (Hardin sandstone) : Mount Pleasant, 

 Tenn. 



C of 7/ pes.— Cat. No. 10999, U.S.N.M. 



PALMATOLEPIS GLABER, new spcciei 



Plate 9, figs. 18-20 



Distinguished from other species of this genus by the unusual 

 narrowness of the plate as a whole and by the exceeding minute- 

 ness of the surface markings. The latter consist of very fine inoscu- 

 lating lines barely distinguishable under a 20-diameter enlargement. 

 There is a distinct trace of the bifurcation, but the lateral lobe is 

 practically obsolete, although the prolongation at the knob is indi- 

 <^^ated. The crest dies out before reaching the anterior extremity, 

 but is prominent and strong in the middle and posterior parts. 



Occuy^ence. — Mississippian (Hardin sandstone) : Mount Pleasant, 

 Tenn. 



Cofypes.—C-At. No. 11043, U.S.N.M. 



PALMATOLEPIS PUNCTATA Hinde. 1879 



Plate 1, figs. 6, 7 



1870. I'olugnatliiis pinirfatn-s Hinde, Quart. .Touni. Geol. Soc. London, vol. 35, 

 p. 367, pi. 17, fig. 14. 



Although named PohjgnatJiiis punctatus by Hinde, his descrip- 

 tion very definitely says, " Surface of plate is covered by very minute 

 tubercles." Both the original description and figure are indefinite 

 as to the details of form and marking of plate, and in one feature 

 they depart from the description, but we still have little hesitancy 



