186 SYSTEMATIC PALEONTOLOGY 



SiPHONALiA MIGRANS (Conrad). 

 Plate XLVII, Figs. 7, 8. 



Fiimts mif/rans Conrad, 1843, Proc. Acad. Nat. Sci. Phila., voL i, p. 309. 



FusHs migrans Courad, 1861, Fossils of the Medial Tertiary, No. 4, p. 85, pi. xlix, 



fig. 6. 

 Tritonifasus migrans Meek, 1864, Miocene Checl< List, Smith. Misc. Coll. (183), 



p. 32. 

 Fusus migrans Harris, 1893, Amer. Jour. Sci., ser. iii, vol. xlv, p. 24. 



Descriiption. — " Fusiform, elongated ; surface with crowded unequal 

 impressed spiral lines, and strong arched lines of growth; whorls con- 

 tracted above, rounded towards the suture ; whorls near the apex longitu- 

 dinally ribbed; aperture half the length of the shell; beak much recurved. 

 Length, three inches and a half." Conrad, 1843. 



This species differs from S. devexa in lacking the longitudinal ribs 

 on the later whorls, and in lacking the angulated shoulder of that species. 



Length, 70 mm.; diameter, 30 mm. 



Occurrence. — Calvert Formation. Plum Point. 



Collections. — Maryland Geological Survey, U. S. National Museum, 

 Philadelphia Academy of Natural Sciences. 



SiPHONALIA MARYLANDICA n. Sp. 



Plate XLVIII, Figs, la, lb. 



Description. — Fusiform, elongate; whorls seven, strongly and regu- 

 larly convex; longitudinal undulations (as in Buccinofusus parilis) on 

 the earlier whorls, but becoming obsolete, and entirely absent on the 

 body whorl; body whorl and spire with about twenty broad rounded 

 revolving ribs; earlier whorls with about six, alternating with these striae 

 are smaller ones, with sometimes a pair of still finer ones on either side 

 of them ; columella concave above, sharply bent at the beginning of the 

 canal, with almost a plate ; canal contracted, of the same width through- 

 out; labrum only slightly sulcate, not flaring below; labium with a thick 

 callosity. 



This differs from Buccinofusus parilis in that its whorls are more 

 strongly convex, its suture more distinct, the revolving ribs rounded 

 instead of sharp, not having the fine sharp intermediate lines or the longi- 



