THE NEW SPECIES OF BRACHIOPODA 



DESCRIBED IN 



Palaeontology of New York, Volume VIII, 

 Farts I and 2, 1892- 1894. 



WITH FOURTEEN PLATES. 



[For the convenience of the student, such new species of Brachiopoda as have 

 been described or figured in Volume VIII of the Palaeontology of New York, 

 in illustration of generic structures, are here brought together in one place, 

 with requisite illustration and description.] 



Lingula compta. 



Plate 1, fig. 1. 



Lingula compta, Hall. Palaeontology of N. Y., vol. VIII, part 1, p. 171^ 

 pi. i, fig. 16. 1892. 



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 fine concentric striae. 



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 from 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 Z. densa, Hall, but differs in its nar- 

 rower form and thinner shell. 



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



