CURRENT LITERATURE. 105 



References to Plates. A key to the genera and subordinate groups of Urocopti- 

 dae, with a general discussion of the affinities and distribution of the family- 

 will form the Introduction to volume xvi, the first two parts of which will contain 

 monographs of the remaining genera, and an Index. 



Hedley, C — Studies on Australian MoUusca. Part vii. Proc. Linn. Soc. N.S.W., 

 1902, pp. 596-619, pis. xxix-xxxiii. 

 Mr. Hedley, in the seventh part of these Studies, discusses Chione lagopos, 

 Lam., which name supersedes the Venus amtralis, Sby. ; an interesting form of 

 Maclra is figured and described under M. abbreviata. Lam., as a variety, but it 

 appears likely that it will ultimately prove to be a new species. The new species 

 described and figured are : Purpura pseudamygdala, Assiminea pagodella. Caecum 

 lilianum, and eight species of Triphora. Notes on the nomenclature and distri- 

 bution of many other molluscs are given, and figures of Gylindrobulla fischeri, 

 A. Ad. and Aug., Endodonta melbournensis. Cox, E. subdepressa, Brazier, E. 

 otwayensis, Petterd, and E. tamarensis, Petterd. 



Kennard, A. S. and Woodward, B. B. — On the Occurrence oi Neritina gratelou- 



piana, Fer. (hitherto misidentified as N. fluviatilis), in the Pleistocene 



Gravels of the Thames at Swanscomb. Proc. Malac. Soc. Lond., 1903, 



vol. v, pp. 320-321. 



In 1901 the authors recorded N. fluviatilis, L., as occurring in countless 



numbers in a section of the high terrace gravel of the Thames, at Swanscomb. 



Examples of these have since been submitted to Dr. Boettger, who identifies them 



as N. gratcloupiana, Fer. {=crenulata, Klein). The nearest Uving form is N. danu- 



bialis, Mlf. 



The occurrence of this species affords, as the authors point out, an extremely 

 interesting example of the imperfection of the palaeontological record. On the 

 Continent it is unkno^ATi in any deposit of later age than the Upper Miocene, 

 in the Thames Valley it appears in the Pleistocene in countless profusion, and is 

 unknown in any later deposits, while the living English species, N. fluviatilis, 

 though known from the Miocene of Germany, is unknown in any deposit older 

 than the Holocene in the British Isles. 



Godwin-Austen, H.H.— Further description of the animal of Danmyantia carimta 



Colhnge, showing its similarity to D. smithi, CoUinge and G.A., with 



remarks on this genus of Issel, Collingea of Simroth, and Isselentia of 



Collinge. Proc. Malac. Soc. Lond., 1903, vol. v, pp. 311-316, pi. xi. 



The author contends that the Collingea smithi, Cllge. and G.A., and Damay 



antia carinata, Cllge., are one and the same thing and that Isselentia, Cllge., is 



probably a subgenus of Damayantia, Issel. 



The differences between these three genera are so evident, both externally 

 and internally that any confusion of them can only be due to either woeful 

 ignorance, or a strange incapabiUty to perceive and rightly appreciate their 

 characters. But an author who has described the generative organs of the 

 genus Girasia as " in every way similar to those of Austenia,'' a,nd those oi Aus- 

 tenia as " very similar " to those of Macrochlamys, and those of the latter genus as 

 " like species of Oxytes,'" can scarcely expect his writings to be taken seriously. 

 Stiasny, Gustav.— Die Niere der Weinbergschnecke. Zool. Anz., 1903, Bd. xxvi,- 

 pp. 334-344, figs. 1-5. 

 After pointing out that not a few of the leading text- books are wrong in 

 their account of the kidney of Helix pomatia, the author gives a detailed descrip- 



