SUP P L E M E N T 



BRACHIOPODA I N ART I C U L AT A. 



DESCRIPTIONS OF NEW SPECIES 



REFERRED TO IN THE PKECEDIN« PAGES OR ON THE ACCOMPANYIN<i PLATES. 



LiNGULA COMPTA, sp. nov. 



PLATE I, FIG. 16. 



Shell very narrow, with lateral margins nearly parallel for most of their length ; 

 the anterior margin transverse and the posterior less abruptly rounded. 

 Shell-substance thin. Surface marked by line concentric strisB. 



The interior of the brachial (?) valve bears two strong lateral muscular 

 ridges which meet in the median line at about one-third the length of the 

 shell from the anterior margin. A narrow median furrow extends fi-om just 

 behind the center of the valve nearly to the anterior margin. Length of this 

 valve, 9 mm., greatest width, 4.5 mm. 



This species is allied to L. densa, Hall, but differs in its narrower form and 

 thinner shell. 



Hamilton group. Tichenor^s Gully, Canandaigua Lake, N. Y. 



LiNGULA SCOTELLA, sp. nOV. 

 PLATE I, FIG. 30. 



Shell broad, subquadrate ; lateral margins parallel for a short distance, but soon 

 rounding to the extremities, which have about equal curvature. Length to 

 width as 2 to 3. Surface covered with more or less distinct concentric lines 

 and wrinkles. The interior of the original valve, a cast of the interior, 



