CONCHYLIA— D/THYi?^. xxix. 



9. vespertina, antic^ subangulata, dente altera laminari obliquo. 

 somewhat angular at the anterior end, with one of 

 the teeth laminar and oblique. 



10. deflorata, antice subangulata, striis decussatis, 



somewhat angular, with decussate striae. 



11. Ferroensis, antic^ flexurd angulari, area anguli reticulata. 



with an angular flexure at the anterior side, and 

 the area of the angle reticulate. 



12. solidula, subtrigona, dentibus minutis obtusis. 



somewhat triangular, with the teeth small and 

 obtuse. 



13. polygona, suborbicularis, margine subundato. 



somewhat orbicular, with the margin a little 

 irregular. 



14. strigilata, antic^ bifaridm striata, dente altera laminari obliquo. 



striate in two directions at the anterior side, with 

 one of the teeth laminar and oblique. 



15. Scopula, anticS bifaridm striata, dentibus erectis. 



striate in two directions at the anterior side, with 

 all the teeth erect. 



27. Tellina. 

 * valvd altera bidentatd. 

 one valve with two teeth. 

 1. lineata, valvd unidentatd absque lateralibus, 



the single toothed valve without lateral teeth. 



