46 NEW FOSSIL SHELLS 



by faint continuations of the striae, not entirely obliterated by a thin deposite of callus. 

 The canal is longer than is usual with the Buccina, and is bent somewhat backwards. 

 The columella is much twisted. Close to the upper suture the whorls are bent, first at a 

 right angle, and then downwards, descending gradually to the suture. Near the middle 

 of the whorl, the strife are faintest. As my only specimen is quite imperfect, I am 

 unable to give the length or number of whorls; of these latter, portions of three remain, 

 and there have probably been three or four more. 



This fine shell is the largest of our fossil Buccina. Judging from description, it may 

 bear a distant resemblance to the B. multirugatum, Conrad, but it differs in its straight 

 striae, size, want of an umbilicus, &c. It is quite rare. Mr. Tuomey whose name I 

 have great pleasure in affixing to it, tells me that he has met with but two specimens of 

 it, both imperfect. 



B. PUSILLUM, PL. 37. FIG. 98. 



B. testa ovatd, sub-conicd, crassd, sub-perforata, Itevi; spird ovatd, brevi. obtusu; suturis parvis, linear/bus; anfrac- 

 tibus quinque, sub-convexis ; anfraclu ultimo rolundato; basi l<evi; perforatione minimi!; aperturd ovatd; columellu 

 recta. 



Shell ovate, somewhat conical, thick, sub-perforate, smooth; spire ovate, short, obtuse; sutures small, linear; whorls 

 five, slightly convex; last whorl rounded; base smooth; perforation very small; mouth ovate; columella straight. 



Length .08. Breadth .04 of an inch. 



Remarks. This little shell bears a strong affinity to the recent B. lunatum, Say, but 

 it is less ovate, and hardly a fifth the size of that shell. 



B. FRUMENTUM, PL. 37. FIG. 99. 



B. testa ovato-fusiformi, acumlnatd, crassd, perforatd, l<evi; spird cornea, elevatd, obtusd; suturis parvis, linearibus; 

 anfractibus quinque, convexis; anfraclu ultimo rolundato. prope aperturam sub-undulato ; basi Itevi; perforatione 

 parvd; aperturd acuminate ovatd; canale brevi, obliguo; columella tortd. 



Shell ovately fusiform, acuminate, thick, perforate, smooth; spire conical, elevated, obtuse; sutures small, linear: 

 whorls five, convex; last whorl rounded, slightly undulate near the mouth; base smooth; perforation small; mouth 

 acuminate-ovate; canal short, oblique; columella twisted. 



Length .15. Breadth .10 of an inch. 



Remarks. The undulations on the last whorl near the aperture are scarcely visible, 

 and may be accidental. 



This little shell has no very peculiar characteristics, but I cannot refer it to any 

 described species. 



B. QUADRULATUM, PL. 37. FlG. 100. 



B. testa ovato-conicd, crassd, imperforata, sulcatd, costatd; spird cornea, sub-elevatd, obtusd, prope apiccm lavi et politd; 

 suturis parvis, fiexuosis; anfractibus sex, valde convexis, prope suturam superiorem pene lavibus; sulcis longitudinalibus, latis. 

 profundis; costis transversis, parvis, quadrangularibus, planulatis; anfractu tdtimo rotundato; basi costatd; aperturd penc 

 ellipticd; columella curvatd, truncatd, inferne plica parvd; canale obliquo. 



Shell ovately conical, thick, imperforate, sulcate, costate; spire conical, somewhat elevated, obtuse, smooth and 

 polished near the apex ; sutures small, flexuose ; whorls six, very convex, nearly smooth at the upper suture ; sulci 

 longitudinal, wide, deep; costs transverse, small, quadrangular, flattened; last whorl rounded; base costate; mouth 

 nearly elliptical; columella curved, truncate, with a small fold below; canal oblique. 



Length .20. Breadth .12 of an inch. 



Remarks. The sulcations are unusually wide and close together, rendering the ele- 

 vations between them acute. The ribs are four in number on the upper whorls, be- 



