Io6 CURRENT LITER ATURK. 



knowledge, cannot f.iil to be of the greatest importance. While it is very 

 interesting to guess at the position and possible origin of the Aplacophora, it is 

 much more important that more forms should be worked out, in order that there 

 may be some foundation for, what at present, can only be regarded as interesting 

 speculation. The generalisations in this memoir, do not go beyond the point 

 warranted by the result obtained. It is a solid contribution, and marks an 

 important advance in our knowledge of these interesting mollusc-;. — W.E.C. 



Hedley, C— studies on Australian Mollusca. Pt. v. Proc. Linn. Soc. N.S.W., 

 IQ02, pp. 700-708, pi, x.\xiv. 

 The following njw species are described and figured: ColiiinhcUa plc.xa, 

 PunctnreUa 'i^alci-ita, Philinc trapezia. Figures of various other species are 

 given, and valuable notes on their nomenclature and classification. 



Drummond, Isabella, M. — Notes on the development of Paliulitia [ Vivipara'] 

 I'ivipara, with special reference to the Urinogenital organs and theories of 

 Gasteropod torsion. Quart. Journ. Micnx Sci., 1902, vol. 46, pp. 97-143, 

 pis. 7-9. 



Miss Drummond has studied the development oJ the urinogenital organs 

 of Vivipara, and arrives at the following conclusions : the functional kidney of 

 the adult belongs, as von Erlanger has already shown, to the left side of the body 

 and the right is not lost, as described by von Erlanger, but persists as the genital 

 duct. An indicition of the original coelomic connection between gonad and 

 kidnev, is present in the course of development. The gonad arises as a solid 

 proliferation of the morphologically dorsal wall of the pericardium. It arises 

 from the original left side, and shows no sign of a paired origin. 



The authoress then briefly summarises the theories of Biitschli, Plate, 

 Pelseneer, Amaudrut and Boutan on Gasteropod torsion, and divides such theories 

 into two classes, viz. i. Those which view the present position of tlie pallial 

 conplex as due to a forward movement along the i ight side of the body, which 

 resulted from greater growth of the left side than of the right, ii. Those which 

 view the present position ot the pallial complex as due to a ventral flexion, 

 followed by a vertical rotation of the whole visceral hump upon the heal. The 

 evidence for the second of these views seems greater than that for the fii st. 



DautzenbaPg'. Ph. — Description de deux Bulimulides nouveaux provenant du 

 Perou. Journ. de Conchyl., 1901, vol. xlix, pp. 213, 214, pi. vii, fig. 1-4. 

 The two species described and figured are Peiviiaetis iocosciisis and P. baeri. 



Dautzenberg, Ph. et Bernier, J.— Description d'un Bulimide nouveau, 

 provenant de la Nouvelle Caledonie. Ibid., pp. 215, 216, pi. vii, tig. 5, 6. 

 Leiicocliaris porphyrocliila. 



Dautzenberg", Ph. — Sur deux deformations observees chez des Placostylits 

 de la Nouvelle Caledonie. Ibid., pp. 217, 218, pi. vii, fig. 7, 8. 

 The author describes and figures two interesting monstrosities of Placo- 

 slyliis porphyrostoiiiiis, Pfr., and P. fibratiis, Martyii. 



DoUfus, G. et Dautzenberg", Ph. — Nouvelle list des Pelecypodes et des 

 Brachiopodes fossiles du Miocene moyen du Nord-Ouest de la F"rance. 

 Ibid. pp. 229-280. 

 The authors' catalogue 185 species of molluscs and various varieties, the 



following species are new : Coripia hoistcli and Prasina lecointrcae. 



Dautzenberg, Ph. — Descriptions de coquilles nouvelles provenant de la 

 Nouvelle-Caledonie. Ibid., pp. 299-302, pi. viii. 



