270 TRANSACTIONS OF THE [maR. 15, 



Named in honor of Dr. J. C, Branner, late State Geologist of 

 Arkansas. 



Straparollus similis Meek and Worthen. (?) 



1861. StraparoUas similis ^Isieek and Worthen, Proc. Acad. Nat. 



Sci. Phil., p. 145. 

 1866. Straparollus similis, Meek and Worthen, Geol. Surv. III., 



Yol. 2, p. 285, PL 19, figs. 4a-b. 

 1891. Straparollus similis, Whitfield, Ann. N, Y. Acad. Sci., 



Yol. 5, p. 589, PI. 14, figs. 9-11. 

 1895. Straparollus similis, Whitfield, Geol. Surv. Ohio, Yol. 7, 



p. 476, PI. 10, figs. 9-11. 

 There is in the collection a single impression of the under 

 side of the coil of a small species of Straparollus. The speci- 

 men is about one-half inch in diameter and the characters so far 

 as preserved, agree with S. si^nilis. 



Straparollus sp. ? 



A single imperfect specimen of a species of this genus, too 

 incomplete for identification, is present in the collection. It is 

 much depressed and nearly disk-form and when perfect must 

 have been one and one-half inches in diameter. The aperture 

 is apparently sub-elliptical in outline and nearly twice as broad 

 as high. 



CEPHALOPODA. 



Orthoceras eurekensis Walcott. (?) 



Pi. XXL, figs. 3-3a. 



1884. Orthoceras eurekensis, Walcott, Pal. Eureka Dist.,p. 265, 

 PI. 23, figs. 2-2a. 

 Shell straight, graduall}^ and regularlj' tapering, transverse 

 section elliptical. Living chamber unknown. Septa situated 

 at distances of about 4 mm., moderately concave. Siphuncle 

 small, excentric towards one of the longer sides of the elliptical 

 cross section. 



Walcott 's figure shows a shell of about twice the length of the 

 Batesville specimen, and is distinctly curved. Except for this 

 curvature, the Batesville specimen, so far as its characters are 

 preserved, agrees with the one described from the Eureka district 

 of Nevada. 



The specimen here figured is from the U. S. Geological Survey 

 collection and was kindlv loaned to the author b}' Professor H. 

 S. Williams. 



