M4 HELIX 8. 32. 
168. (557.) solitaria Say. (Coll. Nr. 321.) Binn. Terr. Moll. IV. p. 96. 
— Patula A?. 86. — Discus solitarius Mórch in Journ. Conch. 
XIII. p. 382. — America borealis. (I. 402.) 
169. H. Cooperi W. G. Binncey. 
«Testa umbilicata, elevato-2globosa, solida, striis obliquis 
incrementi et lineis spiralibus leviter intercidentibus notata, 
alba, ad peripheriam fascia unica, angusta, rufa cincta, aut 
fasciis et lineis rufis, volventibus, varie dispositis, ornata; su- 
tura impressa; spira elevata; anfr. 5 convexi, ultimus rotun- 
datus, ad aperturam valde descendens; umbilicus mediocris, 
pervius, !/, diam. maj. testae aequans; apertura perobliqua, 
circularis; perist. simplex, inerassatum, ad umbilicum reflexius- 
culum, marginibus valde approximatis, callo albo, crasso con- 
junctis. — Diam. maj. 15, min. 13, alt. 9 mill.» (Coll. Nr. 322.) 
Helix Cooperi Binn. in Proc. Ac. nat. sc. May 1858. p. 1415. 
(Malak. Bl. 1859. p. 6.) 
-— Bin Terr. Moll. IV p; 9T C T4 INO 
— —  . Bland et Coop. in Ann. Lyc. N.-York VIII. 1861. 
p. 367. 
Habitat in provincia Nebraska Statuum Unitorum (Dr. Hayden). 
* 
110. (558) alternata Say. (Col. Nr. 323.) Binn. Terr. Moll. IV. 
p. 98. — Bland in Ann. Lyc. N.-York VIL p. 421. — Patula 
A2. 86. — H. radiata Gmel., scabra Lam., dubia M'Cull. — 
Anguispira allernata Morse in Journ. Portl. soc. 1864. — Dis- 
cus alternatus Mórch in Journ. Conch. XIIL. p. 382. — America 
borealis. (l. 102.) 
T(l. (559. strongylodes Pfr. — Texas. (IV. 91.) — H. alternata 
var.? Binn. Terr. Moll. IV. p. 98. t. 77. f. S. 
19. (560.) strigosa Gould. — Bland et Coop. in Ann. Lyc. N.-York 
VIL. p. 367. — Patula A?. 86. — Oregon. (IV. 91.) 
119. (561. infecta Parr. (Coll. Nr. 324. Pfr. Novit. conch. Fasc. 
XXVI. p. 326. Nr. 442. t. 78. f. 144—416. — H. alternata var. 
Binn. Terr. Moll. IV. p. 98? — Canada. (IV. 94.) 
114. (562) ptychomphala Pfr. — Rhytida A?. 89. — Australia. (III. 98.) 
T5. (563. confusa Pfr. — Australia. (IV. 92) 
116. H. Leichardti Cox. T 
«Helix testa late et perspective umbilicata; depresso -glo- 
bosa, solidiuscula; superne confertim oblique costulata, vix 
nitente, opaca, epidermide rufo-virescente induta; spira con- 
vexa; anfractibus 4!/;, convexiusculis, gradatim increscentibus, 
tumidis, ultimo descendente, convexo, supra ad os modice de- 
presso, obsolete angulato; apertura obliqua, irregulariter trun- 
cato-ovali; peristomate simplici, tenui, marginibus conniven- 
tibus. — Diam. maj. 4,40, min. 4,20, alt. 0,65 unc.» (C.) 
