SOME NEW DEVONIC FOSSILS 235 



The length of the shell is somewhat less than thrice the hight. 

 Surface smooth. The hinge structure of this shell has not been 

 definitely determined but the species is provisionally referred to 

 Macrodus. 



Lozver Devonic. Dalhousie, N. B. 



Palaeosolen simplex Maurer 



Stolen simplex Maurer. Fauna d. rechtsrhein. Unterdevon. 1886. 



p. 18 

 Palaeosolen simplex Beushausen. Lamellibr. d. rhein. Devon. 



1895. p. 224, pi. 18, fig. 9, 10 



The specimens before us though not abundant in our collections 

 seem to present no distinction from the lower Coblentzian shell 



Palaeosolen simplex 



referred to, and we are disposed to assign them to that species 

 without further question. 



Lower Devonic. Moosehead lake, a little north of Soccatean 

 point ; also on Presque Isle stream. Chapman Plantation, Me. 



Conocardium incarceratum nov. 



This species will be found a close ally of C. i n c e p t u m Hall, 

 whose form and surface characters as occurring in the Oriskany 

 of Becraft mountain I have already delineated in New York State 

 Museum Memoir 3. The shell sometimes attains a larger size 

 than the New York species ; its form is the same but its exterior 

 differs in the following particulars. The ornament is not so fine, 

 the radial lines less numerous and the deep concentric lamellae 

 can be traced continuously across the shell while in C. i n c e p - 

 t u m they are so interrupted by the radial ribs on the body of 



