No. 4.] 



BILLINGS — FOSSILS OP NfiWPOUNDLAND. 



467 



ciently well preserved to exhibit the dimensions of the striae. It 

 is separated from the former principally on account of its much 

 greater size. 



Arthraria ANTiQiiATA, fjjen. and spec. nov. 



.<.. ' 



Pio. 2. Part of a .slab of .sandstone witli Arlhraria antiqiiata. 



The fossils for which the above generic and specific names are 

 proposed, are small cylindrical bodies, with usually an expan.sion 

 at each end, giving the form of a dumb bell. Those that I have 

 seen, are from six to nine lines in length, and from the manner 

 in which they are grouped upon the surface of the stone, they 

 appear to me to be segments of a jointed plant. Similar forms 

 occur in the Clinton formation. 



lAnqnla Miirrrnii. ; 



|)i| 4. Lini/ulella? aj/inis, ventral valve. 



i.i 6. " njnsnii, a ventral valve ; h. dorsal valve ; c, side 



view of both valves. 



LlNQULA MURRAYT, spec. nov. 



• ijiii 

 Fig. 3, 



Shell elongate, sub pentagonal ; front margin straight or gently 

 convex for a space o<|ual to about two-thirds the width in the 

 middle ; anterior angles rounded ; sides somewhat .straight or 

 very gentW convex .and parallel for two-thirds the lengtli, thou 



