124 Monograph of the Cones of North America. 



Fig. 5. Plate 3. Represents a front view of the spire. 



Fig. 6. Plate S. Is an outline of the whole shell. 



Conus Marylandicus. New species. Plate 3, fig. 2. 



Shell conical, pyriforra, with 8 or 10 deep grooves at the base. 

 In some specimens, upon very close examination, impressed trans- 

 verse lines may be discovered on the upper half of the body whorl ; 

 spire elevated and acute ; the whorls channeled and carinated on 

 their lower edges : length an inch and a half, and half as broad. 



For this fine fossil species I am indebted to John Finch, Esq. 

 who found it in Maryland, during his laborious and persevering re- 

 searches into the rich and extensive locality of fossil shells in that 

 state. We are greatly indebted to the personal exertions and pub- 

 lic lectures of this gentleman for much of our knowledge of the 

 mineral conchology and geological character of the United States. 

 Conus Deluvianus. New species. 



Shell conical, and somewhat elongated ; spire elevated and ra- 

 ther acute ; whorls slightly grooved and concave ; base of the col- 

 umela slightly twisted inwards : length three inches, and less 

 than half as broad. 



I am indebted to the politeness of Mr. T. A. Conrad for this shell, 

 who found it, together with many other new species of fossil relics, 

 at St. Mary's, in Maryland. The whorls at first sight appear to 

 be entirely smooth ; but on close examination, a few transverse 

 impressed lines may be seen in the aperture. It has some re- 

 semblance to the Marylandicus, but differs from that shell in the 

 spire not being carinated ; in the whorls being concave, and in the 

 general contour of the shell. Though entirely distinct, it ap- 

 proaches nearer the conus depcrditus, figured in Enc. Meth. t.337, 

 f. 7, than the C. Marylandicus, for which this last shell has been 

 sometimes mistaken. 



It is well known that many of the fossil shells found in the upper 

 marine formation of Maryland, are often in a more perfect state of 

 maturity, and precisely identical with those which now inhabit our 

 coast The two cones from that locality, above described, have 

 not as yet been found recent.* 



The conus tseniatus is mentioned by Chemnitz as inhabiting the 



