PLATE XLV. 



Fig. 1. — Sangu'molites plicatus. The original of Porfclock's Sanguinolaria 

 transversa, a specimen with somewliat less prominent and more finely striated ribs 

 than usual, chiefly a cast of the interior, from a bed of smooth calcareous grit, 

 Fermanagh, preserved in the Museum of the Geological Survey, Jermyn Street. 

 (Page 387.) 



Fig. 2. — Sanguinolites plicatus. Showing the anterior adductor muscle-scars 

 and a portion of the test, from the Carboniferous Limestone of Lowick. In the 

 Woodwardian Museum, Cambridge. (Page 387.) 



Fig. 3. — Sanguinolites plicatus. The cast of a right valve of an adult 

 specimen. Same locality and Collection. (Page 387.) 



Fig. 4. — Sanguinolites plicatus. The cast of a left valve, showing the details 

 of the interior. Same locality and Collection. (Page 387.) 



