Cerrum us, p. 195. S(triplanena) sirmata (G..z.) Fig. 61, This shell = Strph. subcata. New name for sirmata desired. Curcularia lindsonia (M.z.) p.208 Pyramid elongated; sides equal or inegual; transverse furrows meet in the middle of a face at an angle of 130°. The edges of a side diverge at an angle of about 25°. Both the transverse and longitudinal radial striae are stronger than those of the C. Trent merens; there being more than twice as many in the latter as in the species under consideration. Our markings have a general resemblance to the C. Trent merens, excepting that they are much craser and the pupil is much larger. Lorraine shales, Lorraine, Jefferson county. Cabinet of Military College. Fig. 65, enlarged