524 Mr. R. B. Newton on the 



and attached as its type the Tvrho delphinus of Linngeus, 

 which had hitherto been identified with his Cyclostoma of 

 1801. In 1821 Hartmann introduced Pomattas in a totally 

 different sense to that founded by Studer in 1789 ; hence it 

 is apparent that a change in this name being necessary, and 

 there being no available synonym to receive it, Hartmanm'a, 

 recently proposed by me, must now be recognized. 



Attention has lately been drawn to the fact in a contem- 

 porary journal * that this generic name had been utilized 

 in botany, which, however, does not militate against its use 

 in a zoological sense, as, according to the corrections made in 

 1865 in the British Association Rules, the subjects must be 

 kept entirely distinct. Thus by the operation of the law of 

 priority I have been enabled to reduce these eight genera to 

 the number of four, which will henceforth stand as follows : — 

 Pomati'as, Scala, Delphinula, and • Hartmannia. I am quite 

 aware of the subsequent work done by Lamarck on his genera 

 tScolaria, Delphinula, and Cyclostoma, as well as that of 

 Deshayes on Delphinula, quotations from which are given in 

 the Rev. Canon Norman's criticism ; but we can only treat 

 these genera from the dates on which they were separately 

 founded, as no attempts were made in Lamarck's later re- 

 searches to furnisli a practical revision of the types of his 

 earlier genera, except in the case of Delphinula, which he 

 made perfectly definite for all time. Nothing could be clearer 

 than the history of Pumatias, 1789; its distinct diagnosis 

 and association with so well known a type leaves no loophole 

 for hesitation as to what it included. The second species 

 referred to under this genus was P. variegatus, a mere list or 

 manuscript name wdthout description of any kind. Not 

 until 1820t do we hear of it again, when we lind that 

 Studer himself included it as a synonym of Cyclostoma macu- 

 lutum, Drap., which species he and subsequent authors have 

 shown to be the same as Helix sejyteiuspiralis $ of Razou- 

 niowsky, 1789 §. This species, then, belongs to Pomatias as 

 diagnosed by Hartmann, but which, differing from Studer's 

 of J 789, now becomes Hartmannia. 



Canon Norman makes some critical observations on the 

 tentli Nomenclature Rule of the British Association which 

 deseive close attention. The rule stands thus: — ''A name 



* ' British Naturalist,' May 1891; p. 100. 

 t * Verzeicliniss/ 1820, p. 2'2. 



X Quoted wrougly b}' Cauon Noiiuan in his footnote, p. 448, as Poma- 

 tias sep(e77isphrih'ti. 



§ Jli.rt. Nat. Jorat, 178l», vol. i. p. 278. 



