132 



Meteorological Observations. 



Fig. 5. Gryphsea vomer. 



6. Ostrea falcata. 



V^ar. nasuta. 



7. Idem. 



Far. mesenterica. 



Fig. 8. Terebratula Harlani. 

 Var. discoidal. 

 9. Idem. 



V^ar. rectilateral. 



10. Pholas cithara. 



11. Clavagella armata. 



PLATE X. 



Fig. 1. Ostrea torosa. 



2. Ostrea urticosa. 



3. Pecten calvatus. 



4. Pecten membranosus. 



5. Balanus peregrinus. 



6. Spatangus ungula. 



7. Echinus infulatus. 



Fig. 8. Scutella crustuloides. 

 9. Clypeaster geometriciis. 



10. Cidaretes diatretum. 



11. Terebratula lachryma. 



12. Clypeaster florealis. 



13. Conus gyratus. 



Art. XII. — Abstract of Meteorological Observations, taken at Ma- 

 rietta, Ohio, with notices of Floods, Fruits, and flights of Pi- 

 geons; 5y S. P. HiLDRETH, in the year 1S32. Lat. 39° 25', 

 North, Long. 4° 28', West of Washington City. 



Mean temperature for the year, 52.42°, being nearly two degrees 

 greater than last year, but still about two less than the average tem- 

 perature of the seasons in this climate^ 



