344 JOURNAL OF CONCHOLOGY. 



In 1 84 1 in Wiegmann's x^rchiv fiir Naturgeschichte (p. 225) 

 Dr. Pfeiffer has shown that the name Aciada should be used in 

 preference to that of Acme. 



The genus Aciaila wviS proposed in 1821 by Hartmann ^ 

 for the Bid. Uneatns of Draparnaud. Later in the same year he 

 changed the name to Acme"-, and again in 1840 ^ he placed this 

 species in the genus Piipida of Agassiz. 



Hartmann assigned no reason for these changes, and there- 

 fore if the law of priority is to be respected we must retain the 

 name originally proposed, and this has been adopted by Kobelt, 

 H. and A. Adams, Fischer, Woodward, Chenu, and others. 



r.S. — Since writing the above I have been informed by Mr. R. B. Newton 

 that the name Cydostouia is not retainable, and that Poinatias should 

 be substituted for it. He proposes to publish a Note upon the subject 

 in the April number of the Annals and Magazine of Natural History. 



1 Steinmiiller's Neue Alpina, i 205. 215. 



2 Sturm's Deutschland's Fauna, Abt. vi. Heft. 5, pp. 37, 49, pi. i, f. 4 ; Heft 6, p, 2, 

 figs, a, b, c, D. 



3,Erd- und Susswassergaster. Heft. i. p. =;. 



Helix hortensis m. sinistrorsum and m. scalari- 

 forme in S. Devon. — In June, 1890, a very characteristic 

 specimen of the m. scalariforme, jfths of an inch high and 

 Y^gths of an inch broad, was found about three feet up a white- 

 thorn hedge, at Topsham, South Devon. Subsequently, a 

 specimen of the m. sinistrorsum was found in the same spot. 

 Both were the yellow bandless form referable to v. lulea. — 

 E. Collier, Manchester. 



Helix hortensis v. lutea 12045 at Dovedale. — 



In looking over some specimens of Helix hortensis v. hdea, 

 taken at Dovedale in the autumn of last year, I found one with 

 band formation, 12045. I thought, as this is an unusual band 

 formula, it might be worth while to mention its capture. — 

 H. MiLNES, Winster, near Derby, March loth, i8gi. 



J.C., vi., Apr.. 1891. 



