216 



Hemlock Lake furnish it in gvoafc aljumlancr>. In the spring the 

 animal secretes copiously a brownish fluid which stains the fingeivs^ 

 and which probably is the matter used to color tlie brown parts of the 

 shell. In captivity it is not given to rambling, and if supplied with 

 food will remain for days in the same place. The eggs are de[)osited in 

 June and July, and measure 2 5 by 2 1 mm. I first noticed tlie young 

 early in August, when they measured 2G mm. in greater diameter. 

 They increased to 3-8 before hibernating in October. They had then 

 and for the following summer a well-marked keel at the upper third of 

 the last whorl. Mature shells measure 18 5 mm. in greater diameter by 

 16 mm. in lesser diameter, and have an average height of 10 mm. 

 They are sul>iect to considerable variation in elevation and depression 

 and in the greater or less distinctness of the alternating color marks. 



Patula striatella, Anlh. —This is closely related to the last species 

 in form, structure and habits, but appears to evince a greater love for 

 the woods. The under side of a rotting liard wood log is its favorite 

 resort, and in such stations in Billings' bush and elsewhere I have 

 taken it in great numbeis in late autumn and early spring, and, in less 

 abundance, during the summer. It is usually light-brown in color, but 

 is sometimes of a t eddish tinge. Young shells, as in the case of 

 P. alteniata, are prominently keeled, and some specimens retain this 

 peculi.uity to maturity. The average greater diameter is 5 mm., but 

 some specimens found measure 65 mm. 



Piauogyra asterisous, Morse. — Mr. Harrington found this shell in 

 moss gathered in Dow's swamp in 188-3, and it was recorde I from 

 Ottawa for the fii'st time in Transactions No. 5 of the Clu!>. I find it 

 also among shells collected in Eardley in 1881. It does not appear to 1)6 

 uncommon in moss in moist, well-shaded localities. Although less than 

 two millimetres in greater diameter (its exact rneasui-ement is 1-8) it is 

 easily distinguishable f)-om other minute species l>y the numerous thin 

 laminie projecting at short intervals from the body whorl and giving 

 the shell the appearance of an asterisk, after which it is very appro- 

 priately named. 



J/ellcodlscus Imedtas, Sdi/. — This beautiful little shell is not un- 

 common in rich woods under moss and fallen trees, but does not occur 

 anywhere in great numbers. Billings' bush or Dow's Svvamp may be 



