22 



CONCHOLOGIA CESTRICA. 



J~aw of TJ. flavus. 



[B. & B.] 



Fie, 8. 



Animal, brownish-yellow, with rows of roundish white 

 spots ; head, neck, and upper tentacles, 

 bluish; posteriorly acutely keeled; man- 

 tle large, gibbous, concentric-striate ; 

 pulmonary orifice cleft in the edge of 

 the mantle ; lingual membrane very 

 broad, with 100 rows of 85 teeth each, 42-1-42; buccal 



Lingual Dentition of X. flamis. [B. 



Fig, 9, 



B.] 



plate arcuate, ends square, with a projection on the con- 

 cave margin; length 3 to 4 inches. 



Station, in cellars, yards, and gardens. Chester 

 County; frequent. 



OBS. An unwelcome foreigner from Europe, very 

 common along our seaboard; especially in the cities, 

 and adjacent to them. 



L. agrestis, LINN., Syst. Nat, Ed. x., i., 1758. 



Umax agrestis. [B. & B.] 

 Fig, 10, 



Animal, pallescent, rufescent, or nigrescent; macu- 

 lated ; tentacles blackish ; mantle oval, gibbous, con- 

 centric-striate, one-third as long as the body; dorsal 

 glands flattened, with the interspaces darker; respiratory 

 orifice near the posterior, lateral, edge of the mantle, 

 and bordered with white; length I to 2 inches. 



