308 



Length about 4 inches. The largest whorl seen appears to be about 1^ 

 inches across. 



This species is closely allied to M. Adelina, (ante, p. 231, fig. 217,) but 

 is not so nearly cylindrical, and is a larger species. 



It is only known by three fragments, and an entire individual obscurely 

 seen in section. 



Locality and Formation. Stanbridge, range 6, lot 20 ; Quebec group. 



Collector. T. C. Weston. 



METOPTOMA QUEBECENSIS. (N. sp.) 



Fig. 300. 



Fig. 300. Metoptoma Quebecensis. View of the upper side of an imperfect specimen. 



1 



Description. Shell with the base elliptical, length from one-eighth to one- 

 sixth greater than the width ; conical, or, rather, campanulate, the 

 margins showing a tendency to spread out horizontally ; apex eccentric, 

 situated about one-sixth the whole length from the centre. The height 

 appears to be from one-third to one-half the length. Surface with a few 

 wide shallow concave undulations of growth. It also appears to be finely 

 striated, but no specimens with it perfectly preserved have been collected. 



M. melissa (ante, p. 86,) has the cone more acute, and proportionately 

 more elevated, besides being more narrowly rounded on the anterior, than 

 on the posterior aspect. It is also a smaller species. 



