﻿dall] REVIEW OF FROG-SHELLS AND TRITONS 121 



Some years ago I showed that Aspella Morch must be referred 

 to the Muriciihc, near Trophon. 1 



Still earlier Stimpson had shown that a similar disposition must be 

 made of Eupleura, 2 which seems to be nearly related to Ocincbra. 

 Ever since Montfort's time a certain proportion of naturalists have 

 recognized the distinction between the groups typified by Bursa and 

 Gyrineum or Apollon. Quite recently ECesteven in a very excellent 

 review of Lotorium 3 has thrown much additional light upon the 

 subject. 



The writer in some earlier publications, not having been able to 

 review the whole history of the nomenclature of this family, used 

 names in the sense in which he found them used by Morch and 

 others in the literature, and for some years urged the rejection of 

 undefined generic names, and of some works as authorities, which 

 did not seem to him to have been actually published in the strict 

 sense of the word. Recognizing, however, during the years which 

 have elapsed, that the consensus of opinion is that such names should 

 be accepted and several of the works are entitled to citation, in more 

 recent work he has endeavored to conform to the current practice of 

 specialists in zoological nomenclature. This explanation seems due 

 to explain some discrepancies of treatment in the nomenclature of 

 certain genera, when earlier and later papers are compared. 



II. Notes on Triton and Its Allies 

 Very soon after the publication of the tenth edition of the Systema 

 Naturae it became evident that further subdivision of some of the 

 Linnean genera would be necessary, as well as certain changes in 

 the general features of their classification. The first move, however, 

 due to O. F. Midler, was, so far as the present family is concerned, 

 a consolidation in which were included Buccinum, Murex, etc., of 

 Linne, in fact by implication all the canaliferous Prosobranchs, under 

 a new name, Tritoiiiiim. This was contrary to the rules of nomen- 

 clature and the name cannot be used, although it was accepted by 

 Bolten, Link, Cuvier and various other authors for a portion of the 

 species included under it. The first binomial author to subdivide our 

 group was Bolten, the names used by Klein being prelinnean and 

 polynomial, and only quotable historically. Bolten included a ma- 

 jority of the Lamarckian Tritons under the name Tritonium, begin- 



1 Report on Gastropoda of the "Blake," Bull. Mus. Comp. Zool., xvin, No. 

 xix, pp. 206-10, 1889. 

 2 Am. Jouni. Couch.. 1, p. 58, 1865. 

 3 Proc. Linn. Soc. N. S. Wales, xxvn, part in, pp. 443-483, Dec, 1902. 



