346 PROCEEDINGS OF THE ACADEMY OF [PaRT II 



Length 49.5, diam. 17.5 mm. 

 Type no. 2955 A. N. S. P. 



Latirus angustatus Gabb. Plate XXVI, flg. 1. 



Latirus angustaius Gabb, Tr. Am. Philos. Soc. xv, 1873, p. 217. 



The single specimen, in poor preservation, differs from L. elongotus 

 by the greater number of axial folds, 11 on the last whorl. There 

 are some very weak lirae within the outer lip, the lower ones broken 

 into granules, as in L. elongatus. We suspect that augustatus is 

 merely a young elongatus. 



Length 27 mm (spire and canal broken), diam. 11 mm. 



Type no. 2950 A. N. S. P. 



Latirofusus exilis (Gabb) Plate XXV, fig. 1. 



Latirus exilis Gabb, Tr. Am. Philos. Soc. xv, 1873, p. 217. 



The last whorl has five broad, rounded axial folds, which extend 

 upon the narrow anterior part. Whorls of the spire with four spiral 

 cords, the lower partly concealed in the suture. There are four 

 acute lirae within the outer lip, and two small, subhorizontal plaits 

 on the columella. 



Length 31.4, diam. 9.3 mm. 



This is a typical species of Latirofusus Cossmann. The genus 

 is represented in the American Oligocene (Vicksburg) by L. per- 

 exilis {Cordieria perexilis Conrad), and in the Eocene (Lower Clai- 

 borne) by L. harrisi Johns., (which proves to be a synonym of L. per- 

 exilis), and L. ohtusa Johns. ; in the Jackson bed by L. leaensis Harris. 



Type no. 2948 A. N. S. P. 



Fasciolaria kempi IVIaury. 



Fasciolaria intermedia Sby., Gabb, Tr. Am. Philos. Soc. xv, p. 217. 



In some specimens the last whorl has a rounded shoulder, with- 

 out tubercles. In others the tubercles extend to the lip. Up to 12 

 cm. long. 



Fasciolaria semistriata Sowerby. 



Fasciolaria semistriata Sowerby, Q. J. Geol. Soc. vi, 1849, p. 49. 



Fasciolaria semistriata Sowb., Guppy Q. J. Geol. Soc. xxii, 1866, p. 288, pi. 16, 



fig. 12. 

 Fasciolaria semistriata Sowb., Gabb, Tr. Am. Philos. Soc. xv, 1873, p. 216. 

 Fasciolaria intermedia Sowerby, Q. J. Geol. Soc. vi, 1849, p. 49. 



The great convexity of the whorls and the concavity below the 

 suture are characteristic. It seems to have had dark spiral lines, 

 like F. distans, with sculpture more hke F. tulipa. Anterior canal 

 is very long and slender. The early neanic whorls have low axial 

 folds and spiral striae. Length 104 mm. 



