Horváth Géza (szerk.): A Magyar Természettudományi Múzeum évkönyve 7. (Budapest 1909)
Soós, L.: Anatomy and systematic position of Campylaea coerulans
CAMPYLAEA COERULANS. 43 some respect similar to that of the C. coerulans since it has two mucus glands ramified at the ends, yet it is in general more related to the genus llclix (s. str.), which is proved principally by its four-edged dart. Not less important are the differences in the shells of the two species. Those of C. coerulans are the most similar to those of the Campylaeae , while the shell of A. Grateloapi, as is known, is most closely related to that of the Manila viae , I therefore regard C. coeralans as a representative of a distinct genus. In naming this new genus «Hazaya» I wish to do honour to the memory of the most excellent Hungarian malacologist J. HAZAY. KOBELT 1 looks upon the peculiarities of the gnawing apparatus of the A. Grateloupi as such important characteristics that he would be inclined to regard this species as the last representative of an extinct family, and to take it quite out from among the Helices, and set up a new family for it. In accordance with this conception H. coerulans should be placed into the same family as A. Grateloupi, but the case of II. coerulans has shown that this placing into a separated family is not sufficiently justified. The construction of the reproductive system of II. coerulans shows undoubtedly that this species was developed from the Campylaeae, therefore the genus Hazaya must be regarded as a side-branch of the genus Campylaea, the gnawing apparatus of which has been transformed by accomodation to changed conditions of existence, to the changed food, which can be concluded from the fact that J I. coerulans lives under quite other circumstances than the Campylaeae. The Campylaeae lives in places more humid and richer in vegetation, II. coerulans, however, on the driest rocks, where it can find nothing else except dry, or in rainy weather saturated mosses and lichens. Why this gnawing apparatus, the radula of which is provided with sicklelike teeth, and a jaw not ribbed but only striated, is more convenient for gnawing mosses, is a question which for the present can not be answered. It is possible that similar conditions separated the direction of development of the Maculariae and Allognatlius, I therefore regard the resemblances of the gnawing apparatus of Allognatlius and Hazaya as the result of a convergent development. In the « Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft» (1908, Vol. 40.. No. 3, p. 132) Mr. P. HESSE published a paper intitled «Kritische Fragmente». A part of this paper was devoted by the author to the criticism of my article published in the Hungarian 1 Helix Quedenfeldti von Martens. iNachrbl. d. Deutsch. Mal. Ges. XXIII., 1891, p. 140.)
