(Quadrille Ruled Form. John C Moore Corporation, Rochester, N. V. Binder and holes in leaves, each Patented 1906) 538. O. Schooner Cove, Pawtucket Neck. B.L. Breger, Collector, August 1907. notebook 2, page 62. Sternoscisma lacunosa Sow. (rev. Dall). C. U. Lubbock, (moderately convex, but not globular; 5 ribs or folds, 4 on sinus, 5 or 9 on each side; ribs imbricate; fold x sinus moderately well pronounced). (cf. F. mainensis Billings, pauciplicate forms, but Billings species has the ribs flatter & lacks the imbrication).