BRACHIOPODA. 93 



Superfamily Terebratulacea 



Family Centronellidae 



Genus Newberria Hall 



Newberria missouriensis Swallow 



Plate 18, figures 1-4 



1891. Newberria missouriensis (Swallow MS.) Hall, Tenth Ann. Rep. N. Y. State 



Geol., p. 7, extract, pi. 5, figs. 10-12. 

 1894. Newberria Missouriensis Hall and Clark, Pal. New York, VIII, pt. 2, p. 263, 



pi. 78. figs. 21-23. 

 1897. Newberrya missouriensis Schuchert, Bull. U. S. Geol. Surv., 87, p. 272. 



Swallow's description — "Shell elongate oval; valves convex, usually gibbous in 

 the umbonal region, sometimes depressed. Brachial valve equaling if not exceeding in 

 co'nvexity the opposite valve. 



The convexity of both valves is greatest in the median axis, the slopes to the lateral 

 margins being quite abrupt; over the pallial region there may be a slight median flatten- 

 ing on both valves. 



Umbo of the pedicle-valve quite pronounced, more so than in the other species. 



Surface of both valves smooth, without evidence of concentric wrinkles. 



Interior markings, muscular scars and vascular ridges and furrows having about 

 the same degree of development as in N. Johannis. 



This species is a larger, more robust and rotund shell than N. Johannis and is less 

 elongate and more turgid than R. laevis." 



Supplementary description — Shell a little longer than wide; greatest width about 

 one-third the length of the shell from the back; narrowing slightly towards the hinge- 

 line from the widest part. The convexity of the pedicle valve varies considerably, the 

 highest part usually appearing about one-third the length of the shell from the back 

 but in some cases being in front of the middle; large specimens measure 10 cm. long, 

 10 cm. wide, and 7 cm. thick. The smaller specimens are more easily collected than 

 the larger and those figured by Hall were small. The specimens figured in this report 

 are of medium size. 



Remarks — Specimens of this species have been found, during the present investi- 

 gation, only along Cedar Creek from about 7 miles southeast of Ashland up creek for 

 about 6 miles. It occurs near the bottom of the Callaway and is abundant enough to 

 make up the larger part of a limestone about 10 feet thick. Specimens are so abundant 

 and so badly crushed together that few good ones have been found. This is the largest 

 of the Devonian brachiopods of Missouri. 



Occurrence — Lower part of Callaway limestone, eastern Moniteau, western Calla- 

 way and eastern Boone Counties. 



Family Terebratulidae 

 Genus Eunella Hall and Clarke 



Eunella lincklaeni (Hall) 

 Plate 20, figures 12-16 



1860. Terebratula lincklaeni Hall, Thirteenth Rep. N. Y. State Cab. Nat. Hist., p. 88. 



1861. Cryptonella lincklaeni Hall, Fourteenth Rep. N. Y. State Cab. Nat. Hist., p. 101. 

 1867. Cryptonella (?) lincklaeni Hall, Pal. N. Y., IV, pt. 1, p. 397, pi. 60. figs. 49-65. 

 1867. Terebratula lincklaeni Hall, Pal. N. Y., IV, Corrigenda. 



1894. Eunella Lincklaeni Hall and Clarke, Pal. N. Y., VIII, pt. 2, p. 290, pi. 80, figs. 

 28-32. 



