i8 93 .] THE BRITISH NATURALIST. 



139 



Var. major, Moq. — Pond near Darlton. 



Var. minor, Moq. — Lowe says the var. minutus " is the general form 

 of Limnaus truncatulus found in this neighbourhood." 



Limncea glabra, Mull. — " One specimen has been found in this 

 neighbourhood ; it was dredged in the river Leen, at Bulwell, a very 

 singular locality" (Lowe). I know of no other record of the occurrence 

 of this species in the county. 



Sub-family ANCYLIN^E. 



Genus Ancylus, Geoff. 



Ancylus fluviatilis, Mull. — Occurs in most streams having a stony 

 bottom. 



Var. capuloides, Jan. — Tottle Brook (Lowe). 



Var. albida, Jeff. — Bulwell Forest, in a stream of extremely pure 

 water coming from a spring (Musson). 



Genus Velletia, Gray. 



Velletia lacustris, L.— Generally distributed, but not abundant, and 

 usually of small size. 



MR. DALE ON NOMENCLATURE. 



("British Naturalist," March, 1893, pp. 50-53.) 

 BY DR. BUCKELL. 



Mr. Dale's paper is chiefly marked by two characteristics; profound 

 animosity to the works of Staudinger and Kirby, and great carelessness 

 in verifying alleged facts. 



Mr. Dale starts with the statement that the most important of the 

 rules adopted by the British Association in 1842 was "that the 12th 

 edition of the " Systema Naturae " of Linnaeus should be adopted as 

 the starting point." No such rule was adopted by the British Associ- 

 ation. The rule which was adopted was that the law of priority 

 should not extend to authors older than Linnaeus. It is true that the 

 1 2th edition is mentioned in the argument of the Committee, but there 

 is nothing to show that the rival claims of the two editions (10th and 

 12th) were considered by the Committee at all. 



Mr. Dale next sa}'s that the law of priority " must be read in con- 

 junction with the rule fixing the starting point at the 12th edition of 

 the ' Systema Naturae.'" As there is no such rule, Mr. Dale's "must" 

 becomes inoperative. 



With regard to Mr. Dale's remarks on " nonsense and barbarous 

 names," fox at least one illustration of which he is indebted to the 



