PI.KISTOCKNK FOSSILS. o't^t 



A Hiiiglu iinitilatcil Mpeciiiit'ii nloiiu, nn yot, repruHciitH this HpecieM in 

 my I'li'iHtdoeiit' collect ioiiM. 



AHtyriH llolhulUL Miillcr. 



Fosail— Kivir-rc-dii-Loup ; also glacial 1)cm1h Hritaiii (JeHVeys). 



Recent— Littlo Metis ; KaniouniHka ; (Jaspc ; Murray Hay ; Lal>ra- 

 (lor (Wliiteaves). If iilcntical, as I Biippose, with Cithiinlirlld rosnctfi 

 ((ioiihl), it extends south to New Kngland, and (iould's name has 

 priority. 



liuirinttm nuiliitiim. Linn. 



var. umliihiluin. Mdller. 

 var. Ldhradoiirioii. Keeve. 



Fossil— Saxicava sand and Loda clay, Riviere-du-Loup ; Anticosti ; 

 Labrador ; Duck Cove, St. .loiin, N.B., (Matthew) ; Maine (Packard). 



Recent — Little Metis; (Jaspe; Kaniouraska, &c. ; (Julf St. Law- 

 rence ; soutli (Jreenland to Nantucket. (Sec figure, Plate L) 



I cannot satisfy myself tiiac tiiere is any good specific distinction 

 between this shell and //. uii(l>ititm of the Kuropean seas and glacial 

 beds. It varies very niucii in size, in slv'iiderness, in tiie fineness of the 

 spiral striation, in the development o'' the ribs, in the extension of the 

 mouth, and in the thickness of the shell. Tiie coarser forms are 

 I}. LdhrailoriciiiH, which ^-asses into tlie ordinary multitmn. Medium 

 varieties are B. Hinluhitum and sniooth varieties pass into li, cyantum 

 and li. Tottenii, which last is the ciliatnin of Gould. 



Buecinum lottcidi. Stimpson. 



Fossil — Riviere-du-Loup, Saxioava sand and Leda clay. 



Recent — Little Metis ; Murray Hay and Tatioussac ; also Newfound- 

 land Hanks. It has some reseml)lance to B. Humph reysidnum, Helmet, 

 but is specifically distinct. It is the B. ciliatum of Gould, but has no 

 connection witii the eilintun of Fabricius, except a sligiit resemblance 

 to the smoother forms of the latter. It is remarkable for its very 

 regular spiral lines, absence of folds and convex whorls. 



Bucdnum eyaneum. Hruguirre. 



Fossil — Riviere-du-Loup, abundant. 



Recent — Murray Bay and Tadoussac ; Little Metis ; deeper parts of 

 Gulf St. Lawrence (Wliiteaves) ; Arctic seas. 



This species or varietal form is well represented in tiie figure, which 

 is taken from a large Riviere-du-Loup specimen. Being on the one 

 hand very near to if not identical with the smooth varieties of B. 



