THE NAUTILUS. 23 



(3.) S. haleana Lea. A specimen in tlie Binney and Bland Collec- 

 tion, from Alexandria, La., marked " halei Lea, type," seems 

 to me to be specifically identical with ovalis Gould. 



(4.) S. retiisa Lea. Said to be a variety or subspecies of ovalis, but 

 so far as I was able to judge from a specimen in the Binney 

 and Bland Collection, it is a valid species allied to S. elegans. 



(5.) S. concordialis Gould. Mv. J. A. Singley sent me this from 

 Lee Co., Texas. It is allied to pfeifferi, but more pellucid 

 and shiny ; thin but rather strong ; color, very pale horn. I 

 have also seen a specimen in the Binney and Bland Collec- 

 tion. 



(6.) S. forsheyi Lea. A specimen in the Binney and Bland Col- 

 lection is from Rutersville, Texas, the original locality. It 

 is shiny and very near to pfeiffei'i. 



(7.) S. nuttalliana Lea. Mr. J. H. Thomson sent me five specimens 

 collected in Wyoming in 1877, which no doubt belong to 

 nuttalliana. They are shiny, with lines of growth well 

 marked; in shape, like pfeifferi, varying towards avara ; 

 color, like avara. A specimen in the Binney and Bland 

 Collection, from Portland, Oregon, is similar. 



(8.) S. elegans Risso. Mr. D. B. Cockerell sent me specimens found 

 by rivers and streams at Toronto, which I could not distin- 

 guish specifically from the European elegans. At the same 

 time, they are equally close to S. haydeni which may, I think, 

 be considered a variety or subspecies of elegans. A speci- 

 men of haydeni in the Binney and Bland Collection tends 

 to confirm this opinion. 



(9.) S. hawkinsi Baird. This I have not seen, but it is apparently 

 very close to elegans. 



( To be conlimied.) 



GENERAL NOTES. 



/ In the July number of the Nautilus it is proposed to begin a 

 series of articles upon the collection and preservation of shells. 

 Notes bearing upon these subjects will be welcome. 



" * * * 'WJiile at Maldonado, Uruguay, I succeeded in finding 

 Helix costellata D'Orb, under dead leaves in damp localities. While 

 in the bay I procured about twenty dredgings with very good results^ 

 having at least three species of Corbula, and about fifty other 



