no.1761. .1 NEW SPECIES OF ONCHWIOPSIS BALCII. (M 



Genus Velutina Fleming Isl'l'. 



Subgenus Limneria II. and A. Adams, 1853 (syn. l/< villia 

 Gray L857). 



Subgenus Velutella Gray, 1847. 

 Genus Caledoniella Souverbie, 1869. 

 Genus Marseniria, Gray, 1850. 

 Genus OncMdiopsis (Beck) Bergh, IN,-).'}. 



GENERA OP UNCERTAIN POSITION. 



Genus Marseniopsis Bergh, 1886. Radula 2-1-1-1-2. Shell 

 internal, calcareous, degenerate. Sexes separate. Strictly austral. 



Genus Lamellariopsis Vayssiere [1906]. Radula 2-1-1-1-2. 

 Shell internal, calcareous, thin, paucispiral. The published "diag- 

 nosis"' (quite insufficient) does not show any generic difference from 

 Mn is, n hid . Austral. 



Genera Leptonotis, Gray, 1S47; Scse,vogyra, Whitfield, ! s 7 7 ; Lyo- 

 soma, White, 1883. Fossil. 



[In addition numerous names applied to the embryonic shells — 

 see Tryon and Bergh.] 



LITERATURE. 

 Basedow, Herbert. 



[1905.] On Naticoid Genera Lamellaria and Caledoniella from South Australia. 

 Trans. Royal Soc. South Australia, vol. 29, 1905, pp. 181-186, pis. 26 29. 

 Bateson, William. 



[1894.] Materials for the Study of Variation treated with especial regard to J Ms- 

 continuity in the Origin of Species. Macmillan A Co., 1894. 

 Berch, Rudolph. 



[1853.] Bidrag til en Monographi af Marseniaderne, en Familie af de gastraeopode 

 Mollusker. En critisk, zootomisk, zoologisk Undersogelse. Kongl. Danske 

 Vid. Selsk. Skrift, 5"' Kakke, naturvid. og math. Afd., 3die Hind, 1853, pp. 

 239-350, pis. 1-5. 



Although since corrected and amplified in many respects by the later 

 researches of the author, this work of his youth remains the indispensable 

 storehouse of original observations on the Lamellariidae, and the basis of our 

 modern classification. Unfortunately the plates are poor and the text, in 

 Danish only. There is a "separate" issue repaged 1 -119. Pages cited in 

 text are from original pagination. 

 [1857.] Bidrag til en anatomisk Undersogelse af Marsenina prodita (Loven). 



Naturh. For. Vid. Medd., Kjobenhavn, 1857, pp. I 15, pi. I. 

 [1885.] Die Marseniaden. Zoologischen Jahrbiichern, vol. I. 1885, pp. I<i"> 176, 

 1 text-fij.'. 



This short but valuable paper was an early announcement of the author's 

 chief generalizations from the Challenger material and 'he material from 

 Semper's Philippine journeys. It need not, however, be consulted by the 

 English student, as a translation has been published practically unchanged 

 in the ( 'hallenger reports. See next item. 

 [1880. J Report on the Marseniadse. Voy. Challenger, Zool., vol. 15, pt. II, 

 1886, pp. 1-24, pi. I. 



The first, or general part, appears to be a nearly, if not quite, literal t rans- 

 Iation of the item last above. It will be found the most satisfactory and acces- 

 sible brief general account for most English readers. 



Proc. N. M. vol. 38— 1 3 1 



