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52 INTRODUCTION. 



"P . oxurus. Fulvous gray, slender, back wrinkled 



longitudinally ; tentacula brown, the lateral ones very small ; 

 tail acute, carinated above. Length two thirds of an inch, 

 in New York. 



P . fuscus. Entirely brown, tentacula thick, back 



smooth, tail compressed, acute. In Ohio, length one fourth 

 of an inch. 



P .fiexuolaris. Fulvous, back variegated, with flexu- 



ose brown lines, slightly wrinkled transversely ; attenuated 

 behind, tail obtuse. Length from one to two inches, it 

 may change its shape. Found on the Catskill mountains. 

 There are many other species of this genus in the United 

 States. 



GENUS EUMELUS. 



EiTMELTJS. " Differs from Limax by no visible mantle, the 

 four tentacula almost in one row in front and cylindrical, 

 nearly equal, the smallest pair between the larger ones. 

 Name mythological. 



" Eumelus nehulosus. Body nearly cylindrical, rounded at both 

 ends ; back smooth, crowded with gray and fulvous spots 

 intermixed of the same tinge, without spots beneath ; tenta- 

 cula brown. Length about one inch, in Ohio and Kentucky, 



" E . lividus. Livid brown above, grayish beneath, anten- 

 nae black, obtuse beliind, back smooth and convex. Length 

 one inch, in Ohio, Indiana, and Kentucky. 



GENUS HEMILOMA. 



Hemiloma. (Univalve Land Shell.) " Spire raised and 

 smooth : opening obliqual elliptic, with an anterior raised 

 half margin on the inside lip, a little twisted ; columella 



