124 Syste:matic Paleontology — Middle Devoniax 



thopores although siiiall inid rather few. (Hiite a feature of tangential sec- 

 tions. Mesopores wanting, the small angular cells seen in tangential 

 sections being young zooecia. The principal feature of vertical sections 

 is the presence of more or less curved diaphragms, three or four occurring 

 in the distance of a tube diameter in the peripheral regicm of the zooecia 

 while in the axial region these structures are much less frequent. 



This species agrees in method of growth and tabulation with Monti- 

 culipora ( ?) winchelU Ulrich, another Hamilton form, but the two may 

 readily he distinguished by the different size of their respective zooecia, 

 M. (?) tnarylaiidvn.-ils having aljout 5 in 2 mm., while 7 to 8 zooecia 

 may be counted in the same space in .1/. ( ?) rvinchcUi. 



Occurrence. — RoiiNEY Foii:v[ATiox, Hamiltox Member. East bank 

 Evitts Creek below Wolfe Mill. 



Collection. — Maryland Geological Survey. 



Class BRACHIOPODX 



Order ATREMATA 



Superfamily LINGULACEA 

 Family LINGULELLIDAE 



Genus LINGULELLA Salter 

 LiXGULELLA (?) PALIFORMIS Hall 



PlateYIIl, Figs. 1-4 



Lingula paliformis Hall, 1860, Thirteenth Rep. N. Y. State Cab. Nat. Hist., 



p. 70, fig. 1. 

 Lingula palaeformis Hall, 1867, Pal. N. Y., vol. iv, p. 8, pi. 1, fig. 7. 

 LinguleUa (?) palaeformis Hall and Clarke, 1892, Pal. N. Y., vol. viii, pt. i, 



pp. 59, 64, pi. ii, figs. 6-S. 

 LinguleUa (?) puliformis Srhuchert, 1S97, Bull. U. S. Geol. Survey, No. 87, 



p. 2.58. 

 LinguleUa (?) paliformis Clarke, 1903. N. Y. State Mus. Bull. CS, p. 250. 



Description. — "Shell broadly sulinvate; sides sloping in a nearly 

 straight line from the l)eak to Iialf tlie length of the shell, convex at the 



'Contributed by Charles S. Prosser with additions of Onondaga species by 

 E. M. Kindle as indicated. 



