PLATE XLV. 



Dentalium. S]i. (page 311). 



Figure 1. Side view of a specimen ficnn Peiitamerus Point, Lake 



[Manitoba. 

 Figure 2. Similar view oi a portion of ■( large specimen from Dawson 

 Hay, Lake Winnipegosis. 

 .MuKC'uisoNiA TUHOi\-\TA, \'ar. (page .'SjIS). 

 Figure .'3. Ventral \ lew cif the specimen referred to on page 31.''i, under 

 the name J/. Arfhidcana, "in which tlie body whorl 

 and two nf the preceding volutions are preserved." 

 I)i-awn from a wax impression of a natural mould of 

 the e.xterior of the shell collected at an island in the 

 sciuthern porticjn of Dawson Bay. 

 1!kllehopiiii\ Pei.oI's (page .'UT). 

 Figure 4. Dorsal \iew of a cast of the interior of the shell of a nearly 

 adult example of this species, from Dawson Bay, at 

 Whitea\'es Point. 

 FLl^•E.^]A suiispixosuM (page .321). 

 Figure ■""). A'iew nf a gutta pei'cha impression of a natural mould of the 

 exteri(jr of a shell of a specimen ( if this species from 

 lia\\s(.in Hay, at a small exposure near Salt Point. 

 AsTHALiTEs FiMiiiiiATUs (pp. 323 and .■'>24). 

 Figure U. The wax imjiression of the natural mould referred toon page 

 • 'i23, showing the " regularly lobate or sinuate lateral 

 expansion ' at the periphery, as seen from abo\'e. 

 X.vrit'opsis ]Ma\itobexsis (page 3:!2). 

 Figure 7. Dorsal aspect of the most perfect specimen collected, from 

 Pentameius Point, Lake [Manitoba. Twice the natural 

 size. 



LoxoxHMA .\LTi\ iiiAis (page.33.j). 

 Figure 8. Dorsal \ie\v of a specimen from an exposure on I )awson l!av, 



half a mile north of the mouth of Bell Hi\er, which 



"has a considerable poi'tion of the test preserved, on 



three contiguous volutions. 

 Figure 9. A'entral view of a cast of the interior of a shell of this 



.sjiecies, from the south-west side of Cameron Bay, 



Lake Winiiipegosis. 

 Lo.\oxi;,MA cii.vciM.LMUsi (page :'>.'i7). 

 Figure 10. The gutta pcrcha impression of a moukl of the exterior of a 



shell of this species fio]ij I >e\ ils Point, Lake ^\'in- 



uiJl^■^osis, referred lo on jL-ige .'i^'S. Four times the 



natural size. 



