2r»2 THE ICK A<;K in CANADA. 



BpirH Bupenic itlanatiV, Huliiris miixiino inipiesMis, liasi tuineiite ; 

 imibilico intus iiuijore, cxtws iiK^dico ; apcitura sublunata, posticc ad 

 anguhiiii circ. 'AO iiiclinata, aiitice late nitumlata ; lal)i'(> aciito, pustite 

 ])laiiutu ; lahio aciilo, plaiiato, iiaiitl rellexo ; ci)luiuella poutiuc regu- 

 lariter arcuata, iic(|ue viiiargiiiata, ueo angulata, iicc iiiHculpla. 



Loinj. (apicc tlec'ollalo) vS'i, /oiiij. splr. 'IV2, Int. "Tli poll. /■'''■. 90'. 



I/dli. Montreal, in Htrato glaoiali, fossiliu, raiisaiiuu repcita. Mas, 

 Duwson, Mdiill Coll., Nat. Hist. Soc, 



Dr. Carpenter adds tlie following remarks : 



While almost all the other drift fossils are of species still living in 

 the neighhoiuing seas, this is nf)t known, even generioally, to be at 

 present in existence. It is hard to pronounce satisfactorily on its 

 relationships. In its thin, coated shell it resembles VeUitina ; the 

 striae and loose whirls recall Naticina ; the straight pillar lip reminds 

 us of Fossarus ; while the Jimbilicus and rounde<l base, with entire 

 mouth, best accord with the Natica group. With Trichotropis and its 

 congeners I can see no re3end)lance. One remarkable feature in all 

 the specimens is the decollation of the upper whirls, seen even in a 

 nearly perfect young specimen, "2 across ; other young sj)ecimens, even 

 smaller, have only one whirl and a half remaining. The broken 

 portion is tilled U]) not so much by a se{)tum as by a solid thickening. 

 The separation of the whirls is comi)lete from the beginning ; and 

 although, in the parietal portion, they are closely appressed, the 

 smooth and somewhat glossy epidermis is distinctly seen between. 

 The fracture of the mouth in most of the specimens, enables this 

 feature to be distinctly observed ; and would also reveal the "internal 

 groove " and columellar callosity ascriljcd to Torellia, did any such 

 exist. 



The straightening of the inner lip, at an angle of 30° from the axis, 

 makes the umbilicus by no means large (for a Naticoid shell) when 

 viewed from the base in the line of the pillar ; but the same cause 

 enlarges it within, recalling the .adult appearance of Amphithalamus. 

 The flattening of the upper portion of the whirls gives the shell some- 

 what of an lanthinoid aspect. 



While the analogies of the shell point in so many diiTerent directions, 

 it is impossible to assign it even to its family group. It is to be hoped, 

 however, that the dredge will yet reveal its existence in a living state. 



The above species may be supposed to resemble Torellia vestiUi, 

 Jeffreys, from Norway. Our specimens differ however in form, as 

 above noted, and also in the absence of the tooth in the inner lip, and 

 in the smooth epidermis. 



