EASTERN PROVINCE INTERIOR REGION SPECIES. 303 



Eelix muliiUneala, Say, Journ. Acad. Phila., ii, 150 (1821); ed. Binney, 15. — Fekus- 

 SAC, Hist., 1)1. xlvi, a, fig. 3. — Binnky, Bost. Jouru. Nat. Hist., 1, 480, pi. 

 xLv (1837) Terr. Moll., ii, 103, pi. iii.— Leidy, Torr. Moll. U. S., i, 254, pi. 

 viii, figs. 1-G (1851), auat.— De Kay, N. Y. Moll., 41, pi. iii, fig. M (1843).— 

 Peeiffeh, Synib. ad Hist. Hel., i, 41 ; Mou. Hel. Viv., i, 290; in CnRMNixz, 

 ed. 2, ii, 41, pi. Ixxi, figs. 17-19 (1849).— Reeve, Con. Icon., No. 691 (1852).— 

 Deshayes, IuFer., i, 113. — W. G. Binney, Terr. Moll., iv. 



Mesodon multUineata, Thyox, Am. Journ. Conch., iii, 45 (1867). — W. G. Binney, Terr. 

 Moll., V, 320. 



Ill the States bordering on the Ohio River, from New York toMiune- 

 sota. It is a species of the Interior Region. 



Animal blackish, granulated ; granules whitish, with darker inter- 

 stices; foot beneath black. 



The specimens figured show how variable the species is in size. In 

 color it is also very variable; sometimes it is found of a uniform red, 

 at others albino. 



The varieties mentioned by Pfeiffer and Deshayes are distinguished 

 merely by the revolving bands. In a large suit of specimens it is rare 

 to find two on which these bands and lines are similarly arranged. 

 Some have a parietal tooth. 



It would appear from the statement made by Dr. Kirtland that its 

 habits are somewhat peculiar. "Wet marshes are its principal resort, 

 where, during summer, it may be seen climbing about on weeds and 

 blades of grass, apparently endeavoring to avoid the water collected 

 beneath it. At the approach of winter it retreats to the tops of the 

 carex-bogs, where several dozen may be found collected together in a 

 torpid state, with the mouths of their shells closed with an epiphragra. 

 They usually form a shallow excavation on the bog, concealed beneath 

 the tufts of dead grass." The numbers collected in these retreats are 

 sometimes "agglutinated into one mass." This habit of attaching 

 themselves to each other in numbers during their hibernation I have 

 not witnessed in any other of our species, but I believe it is common 

 in some European species. 



Jaw arcuate, of uniform width; ends blunt; anterior surface with 

 numerous, crowded ribs, denticulating either margin. 



Lingual membrane (Terr. Moll., V, Plate VIII, Fig. L) with 42-1-42 

 teeth ; 17 perfect laterals. 



Genitalia (see Terr. Moll., I, I, I. c.) : Penis sac long, stout, with a very 

 highly developed prepuce on the greater part of its course, then taper- 

 ing to its summit, where it receives the vas delerens and retractor 

 muscle; genital bladder long, subcyliudrical, its duct but slightly 



