38 Cincinnati Society of N'ntiiral History. 



reduced to s3aion3'ms. Varieties are figured of the well known H. 

 olivieri, Fer., H. subj^rofuga, Stabile, U. pyramidata, Drap., H. 

 muralis^.MuW., Clausilia koheltiana, Kiister, and many other species. 

 Such a treatment of the various genera of our North American snails 

 would be the most important contribution to our conchology that 

 could noft^ be made; and the material for doing it is abundant. It is 

 to be hoped that some competent person will, ere long, undertake the 

 work. 



Glandina (Oleacina) decussata, De5ha3-es, var. (Bland, Binne}^ 

 Tr^'on). — Having* lately received a number of specimens of this exceed- 

 ingl}^ rare species, as thus identified, from western Texas, embracing 

 specimens of everj- age, I wish to put upon record m}- opinion that 

 the high authorities here quoted are no doubt in error in this determi- 

 nation, or that the figure in pi. Ixi., ToTestrial JloUusks, vol. v., 

 originall^^ called b\^ Dr. Binne3% " Glandina truncata, Sa3^, var.," is 

 much out of the way. The spire of m3^ specimens is much less acute, 

 and more like that of G. texasiana. The " revolving lines," which are 

 so plainly- shown in Mr. Binne3''s figure, are invisible on m3' specimens 

 without the aid of a magnifier. Glandina decussata is described as 

 having seven or eight whorls, while the largest specimens of the present 

 form have but six. If a variet3^ of Glandina decussata^ it is certainl3^ 

 a ver3' distinct one. It is associated with Ilolospira roemeri, Pfr., a 

 species equall3' rare, with a Ilacroceramus, which Mr. Bland refers, 

 doubtfull3', to J/. ^:>o?z^(^c«/5, Gould; ^x'lVii fx Bidimidus, of which onl3^ 

 dead specimens were received, and which resembles in outline, ver3' 

 nearl3', the B. patriarcha, W. G. Binne3'; with the H. mooreana, W. 

 G. Binne3', and H. he^dandieriana, Moricand. 



Holospira roemeri^ Pfr. — This shell, ver3' rare in collections, was 

 received with the preceding. All the specimens were dead, but some 

 w^ere in a fair state of preservation, so as to indicate all the characters 

 distinctl3\ It inhabits crevices of the rocks, and only comes out in 

 rainy or damp warm weather. Judging from the number of dead 

 specimens, it can not be scarce in the localities where it occurs. 



Helix (Polygyra) espiloca, Eavenel. — I collected large numbers of 

 this shell in December, 1878, at Orange, Texas, and Brashear City, 

 Louisiana. Its station was under logs, bits of bark, boards, etc., and 

 it had spread, at the latter locality, even into the 3"ards of private 

 residences, and under the plank sidewalks of the principal streets. The 

 H. pulchella, Miill., and Pupa contracta^ Sa3^, were found with it at 

 Brashear. 



Ariolimax columhiana, var. hecoxi. — I have received, at different 



