THE NATURAL HISTORY SURVEY. 151 



Remarks: Profunda closely resembles multilineata Say when 

 both are young, being umbilicated and with numerous spiral 

 color lines. In multilineata the band just above the periphery 

 is narrow, while in profunda it .is very wide. When adult the 

 former is imperforate while the latter is widely iimbilicated. This 

 is one of our most abundant mollusks, and is the finest and 

 largest of the Helices in this region. It is very bold in captiv- 

 ity, allowing its captor to pick it up without retracting into its 

 shell. If the term could be applied to mollusks, I should say 

 that it was of an inquisitive turn of mind, for it investigates 

 everything within reach. A single specimen (PI. xxix, Fig. 8) 

 was found at Wolf Lake by Prof. W. K. Higley, in 1888, which 

 is very curiously distorted; the superior part of the peristome, 

 near the body-whorl, is very much bulged, and the lip at 

 this point projects in a tooth-like manner; the periphery, from 

 the aperture to a point half way around the last whorl, is con- 

 cave, or grooved. The animal must have suffered some injury, 

 probably from the pressure of some foreign object. This is, 

 next to Pyramidula alternata, our most common species, and is 

 found everywhere. It may be collected in the Bowmanville 

 woods by hundreds, about old moss-covered logs, and particu- 

 larly about old camp-fires where there is some charred wood 

 It varies greatly in coloration, from light colored to very dark 

 with a wide band. 

 54a. Polygyra profunda alba Walker. 



Polygyra profunda alba WALKER, Terr. Moll. Mich., p. 12, 1899. 



The variety differs from the type in being pale horn colored 

 without bands. Variety alba is not common in this region, and 

 has been found only at Joliet and Bowmanville. 



55. Polygyra albolabris Say, pi. xxix, fig. 6. 



Helix albolabris SAY, Nich. Encyl., Am. ed., pi. i, fig. 1, 1817. 



Helix major BINNEY, Bost. Journ. Nat. Hist., Vol. I, p. 473, pi. xii, 



1837. (Variety.) 

 Helix rufa DE KAY, N. Y. Moll., p. 44, pi. iii, fig. 30, 1843. (Vide 



W. G. Binney.) 

 Polygyra alboJabris maritima PILSBRY, The Nautilus, Vol. V, p. 142, 



1892. (Variety.) 



Helix transversemis LEACH, Mss., The Nautilus, Vol. XI, p. 94, 1898. 

 Polygyra albolabris minor STERK.I, Land & Fr., W. Moll., Tuscar. 



Co., Ohio, p. 2. (Variety.) 

 Polygyra albolabris alleni WETHERBY, The Nautilus, Vol. XI, p. 94, 



1898.* (Variety.) 



*The original reference to this variety has not been found in any work to which the 

 author has access. This is also true of P. ihyroides pulchella ckll. 



