GENUS AMNICOLA, Gould, Hold. 



PLATE 1. FIG. 1. 



Testa parva vel minuta, PALUDINJE similis; operculum 

 corneum, subspirale. 





 SYNONYMS AND REFERENCES. 



PALUDINA, LAM. SAY, &c. 



HYDR OBI A ? H ARTM ANN. 



GOULD. Invert, of Massachusetts, p. 228. 



DESCRIPTION. 



AMIMAL with the head proboscidiform, rostrum 

 subbifid at the extremity, and extending beyond 

 the foot; mouth a longitudinal slit upon the 

 inferior surface: tentacles setaceous, of equal 

 length: eyes at the posterior external base, not 

 pedunculate: foot subovate or lengthened, trun- 

 cate anteriorly, the angles capable of being 

 turned outwards as in VALVATA, but not to so 

 great an extent; and it is incapable of the ex- 

 tension beyond the rostrum observable in PALU- 

 DINA. 



