PART I CHAZYAN AND RELATED BRACHIOPODS—-COOPER 217 
PSEUDOLINGULA PYXIDATA Sinclair 
Pseudolingula pyxidata StncLair, Trans. Roy. Soc. Canada, ser. 3, vol. 39, sec. 4, p. 59, pl. 1, 
fig. IO, 1945. 
Type.—Holotype: Private collection G. W. Sinclair. 
Horizon and locality.—Black River?, Riviére Sault a la Puce, Montmorency 
County, Quebec. 
PSEUDOLINGULA ? SCULPTATA Cooper, new species 
Plate 3, B, figures 2-5 
Description based on a brachial valve which is moderately large, subovate in 
outline and with alternate broad bands of gray and pale brown. Apical angle 
about 80°; posterolateral margins forming an indistinct shoulder with lateral 
margins which are gently rounded. Anterolateral extremities narrowly rounded ; 
anterior margin gently rounded. Slightly convex in lateral and anterior profiles. 
Surface marked by fine concentric undulations of growth crowded and wavy on 
the flanks; on the body of the valve numerous radial striae break up the concen- 
tric lines into fine elevated scallops. 
Measurements in mm.—Holotype, length 19+, width 12.5. 
Type.—Holotype: 45065. 
Horizon and locality—Camp Nelson formation in Kentucky: Opposite the 
railroad station at High Bridge, Harrodsburg (30’) Quadrangle. 
Discussion—This species suggests P. ? luttrellensis in its size and form but 
differs therefrom in the nature of the ornamentation. The latter species does not 
have the numerous fine radial striae interrupting the concentric marks. 
PSEUDOLINGULA sp. 1 
Shell large, subrectangular in outline with nearly straight and parallel sides. 
Beaks missing; surface distinctly marked. Posterolateral areas with strong 
concentric undulations which broaden anteriorly to disappear in the anterior half 
which is nearly smooth. Fine undulations appear between the stronger ones in 
the posterolateral area. Interior of one valve with a strongly developed callosity. 
Described specimen.—116773. 
Horizon and locality Shippensburg formation (Pinesburg member-Nidulites 
zone) in Maryland: On U. S. Highway 40 on the west side of Conococheague 
Creek at Wilson, 7 miles west of Hagerstown, Williamsport (15’) Quadrangle. 
Discussion.—The specimen is recorded here in the hope that others will look 
for better material. Its ornamentation and the muscle callosity suggest a new 
form. 
Genus ECTENOGLOSSA Sinclair, 1945 
ECTENOGLOSSA ? LYELLI (Billings) 
Plate 3, C, figures 6, 7 
Lingula lyelli Bittrncs, Canadian Nat. Geol., vol. 4, p. 348, figs. 1a-1d; p. 431, 1859.— 
Bituincs in Logan, Geology of Canada, p. 124, fig. 49, 1863. 
