PLATE XLT. 



NuouLA (?) Manitoisensis (page 301). 



Finure 1. Side \ie\v of tlie larger of the two right vahes collected, from 

 a small island oft' Whiteaves Point, in Dawson Bay 

 twice the natural size. 



Pleuroto:\iaria inpkanodcsa (page 313). 



Piguie "2. Dorsal view of a small specimen with a considerable portion of 

 the test pre.ser\'ed, from Pentamerus Point, Lake 

 Manitoba. 



Figure '2(1: Basal view of the same. 



Figure 3. Dorsal view of a cast of the inteiior of the sliell of a large 

 specimen of this species, from Dawson Bay, Lake 

 Winnipegosis, aljout two miles west of Salt Point. 



Pleukotomaria Spenceri (page 341). 



Figure 4. Tlic type specimen, from the western shore of Dawson Bay, 



as seen from above. 

 Figure -\:<i.. Dorsal view of the same. 

 Figui'e All. Basal view of the same. 



l^vARHISTOJIA TvRliEfjLll (page 314). 



Figure -"i. Small specimen, with the whole of the test pi'eservcd, from 

 Dawson Bay, about two miles west of .Salt Point, as 

 seen firim abo\'e. 



Figure '>ii: Dorsal view of the same. 



Figure G. A cast (.)f the interior of the shell of ^i large s]iecimen from 

 Dawson Bay, at ii small point half a mile nortli of 

 the niouth of Steep Bock lti\er, as seen abo\'e. 



Figuie (i. Basal view of the .same. 



Figure 66. Doi'sal view of the same, in outline only. 



MURCIIISOMA TlMiBIN'ATA, Var.* (]>:lge -'lOS). 



Figur-e 7, View of a gutta jtercha impression of a natural mould of the 

 exteri(jr of a sIk^II of this species, in dolomite, fi'om 

 Dawson Bay, noi'th of Stee|i Bock Biver. 

 Mi'RCiiisoxiA DowfjMiii (pag(^ 310). 



Figui-e 8. View of a gutta perclia impression of a shaiply defined 

 natur'al mould of tlii' exti'ri(jr of a shell of this 

 sjiccies from D.awson IJay, foui' mihw west of Salt 

 Point. 



*K('f(-nt'tl to ill the tc\t (pn^f 31.'i) ;is ^^ hfitrchi^ntitii A rcli iiirit]iii ^ Xdv. Xinn." Imt 

 thin HjiiiiH is jirpncciipioil. 



