a 
100 HYALINIA RADIATULA. 
and Bland; from Onondaga co. by Rev. W. M. Beauchamp; from Plattsburg by 
G. H. Hudson; from Cayuga Lake Valley by N. Banks; and from Monroe co. by 
J. Walton. As V. hammonis it is recorded by F. C. Baker from Hayden’s Mills 
near Auburn; and as V. radiatula from Madison co. and Staten Island by Mr. Clapp. 
Nevada—Z. viridulus, Lahontan area, W. G. Binney (Call, Bull. U.S. Geol. 
Surv., 1881, p. 24). 
North Carolina—V. hammonis tabulated for Roan, Smoky, and French Broad 
Mountains (Walker and Pilsbry, Proc. Acad. Nat. Sci. Philad., June 1902). 
Ohio—Recorded as Z. viridulus from Cincinnati, Hamilton co., by J. F. James ; 
Kent, Portage co., by Mr. G. W. Dean ; Columbus, Franklin co., by H. Moores ; 
from Garrettsville by Mr. 8S. M. Luther; and as V. radiatula from New Phila- 
delphia by Mr. G. H. Clapp. 
Oregon—Z. viridulus quoted from Portland (Binney, Manual Land Shells, 1885). 
Pennsylvania—Vitrea hammonis, near Leetsdale, Allegheny co., Nov. 1905 ! 
and Edgeworth, G. H. Clapp. Lansdowne Valley ; Wissahickon; and near Falls 
of Schuylkill (Schick, Naut., April 1895, p. 135). 
Rhode Island—H. viridula not common under logs, near Tiverton (Thomson, 
Journ. of Conch., 1885, p. 369); and reported as Vitrea radiatula from Warwick 
by Mr. G. H. Clapp. 
Texas—Z. viridulus reported from Hempstead by F. A. Sampson. 
Utah—Z. viridulus quoted by W. G. Binney (Manual Land Shells, 1885, p. 64). 
Vermont—//. viridula, Hartland, B. P. Ruggles. 
Virginia—Var. circumstriata cited from Ballston and Mt. Vernon by Mr. Clapp. 
Geographical Distribution.—H. radiatula is evidently a very 
ancient species, as is testified by its wide distribution in temperate climes 
in both the Old and New Worlds and is truly cireumpolar. 
+. 145.—Map of the Geographical Distribution of the aggregate 
form of Hyalinia radiatula Alder. 
“<4 Probable Range. eae | Recorded Distribution 
It is diffused throughout the British Isles, its occurrence having been 
verified for almost every county and vice-county into which the country 
is divided, and according to Mr. R. Standen, it is very suggestive 
that in the south-west district of Ireland—one of the most primitive 
regions in the British Isles, where so many American types of plants and 
insects still linger—the great majority of the specimens of this species 
should be the greenish-white variety, which is the prevalent American 
form, and which is comparatively rare in other parts of Ireland and 
decidedly uncommon in England. 
