THE NAUTILUS. 45 
these shells should be separated from rusticana without 
examining a larger series showing the variation. 
(24.) S. verrilli Bld. Apparently belongs to sect. Lucene, but 
I have not seen specimens. 
(25.) S. grenlandica Beck. Specimens in the Binney and 
Bland collection from Kuksuk, Greenland, almost cer- 
tainly belong to this group; although the species seems 
to have leaning toward the Campestres, with which it 
allies itself through S. chrysis and S. annewa. 
Section IV. Campestres. 
(26.) S. campestris Say. Mr. Singley sent me specimens of this 
from Long Key, Florida; they seemed to me nearly identi- 
cal with S. lineata from Kremmling, Colo. A variety of 
campestris was named inflata by Lea. 
(27.) S. lineata W. G. Binney. Found in rejectamenta at Kremm- 
ling, Colo., together with a form elongata, Ckll., J. of Conch., 
1892, p. 39. 
(28.) S. greerii Tryon. This is considered asynonym of S. obliqua, 
but a dead shell in the Binney and Bland collection from 
Vicksburg, Miss. (Tryon), appeared to resemble campestris. 
(29.) S. chrysis Westerl. 
(30.) S. annexa Westerl. This and the last appear to belong here, 
but are probably related somewhat to grenlandica. The 
presence of whitish streaks on the arctic species is note- 
worthy. Dr. yon Martens (Conch. Mittheilungen, 1885) 
has described a var. auwrelia of S. chrysis from Alaska. 
(31.) S. unicolor Tryon. A specimen so named is in the Binney 
and Bland collection from New Orleans, La. It isa peculiar 
shell, apparently of sect. Campestres, very globose, spire short 
and blunt. 
(32.) S. turgida Westerl. This species is unknown to me; it is 
recorded in Land— och Sétv. Moll. Vega—Exped. 1885. 
(33.) S. decampti Tyron. Belongs to Amphibine, and was acci- 
dently omitted in the proper place. It is considered a form 
of ovalis, but a specimen from Michigan (Tryon), in the 
