CURRENT LITERATURE. 183 



P. pacificum, n. sp. is nauliloid in septa, but ammonoid in its calcareous proto- 

 conch in the earliest larval stage. The middle larval stage shows a form not unlike 

 the Paleozoic Glyphioccras ; while the last larval stage is analogous to Nannitcs, a 

 Mesozoic genus. In the adolescent period it passes through the following stages: 

 first one corresponding to Ci/mbitcs or some Cyvibites-Vike form, then to some aego- 

 ceran genus of Upper Triassic or Lower Jurassic age, then to one of the early 

 perisphinctoid genera, then to Cusmoccrns of the Jura, and lastly to Hoplites. Thus 

 by ontogenic study it is shown that Placenticeras developed out of Hoplites, and 

 must therefore be placed with the last mentioned group under the Stephanoceratidae 

 and not Amaltheidac, as is usual in nearly all text-books. 



A parallel study of the ontogeny of P. imcificum and P. califomicum only serves 

 to show that the results must be interpreted with caution, the differences being 

 largely due to unequal acceleration of characters. 



In this and the previous paper we cannot attempt to do more than very briefly 

 indicate the line of ontogenic research, to be fully appreciated, the complete papers 

 must be carefully read, and this all malacologists should do. — W. E. C. 



Sturany, R. — W. A. Obrutschew's MoUusken-Ausbeute aus Hochasien. Denk. 

 K. Akad. Wiss. Wien, 1900, Bd. Ixx, pp. 17 — 48, Tfn. i— iv. 



Dr. Sturany in a very welcome contribution, enumerates 59 species and 4 

 varieties of which the following are new : Pleclotropis comata, Stilpnodisct(s euphycs, 

 Afetodontia griphodcs, Cathaica obrutschewi, C. perversa, Platypetasus obrutschewi, 

 ? Satsuma kutupaensis, Buliminus schypaensis, B. obrutscheivi, B. diaprcpcs, B. 

 teres, B. xcrampelinus and var. thrypjtica, B. conimeiisalis, B. ottonis, B. asaphes 

 and var. brcvior, B. amphidoxus, B. interstrcotus, B. euonymus, Serina cathaica, 

 Grdlr., var. egressa, Piqwpsis dissociahllis, P. poliistrepta, P. po.raplesia, Opeas 

 schcnsiensc, Planorbis exarescois, P. neumayri, Valvata kukunorica, Corbicula 

 obruischcivi, C. methoria, and Unio tschiUensis. All the new forms are figured, in 

 addition to 9 previously described by Dr. von Moiiendorff. A very useful Biblio- 

 graphy, enumerating upwards of 100 papers, completes this interesting memoir. 



Sturany, R. — Diagnosen neuer Gastropoden aus dem Rolhen Meere. Anz. K. 

 Akad. Wiss. Wien, 1900, Nr. xvii, pp. i — 4. 



The new species are Ficsus bifrons, JVassa tkaumasia. A'', steindachner.i, N. 

 xcsta, JV. munda. A" lathraia, A", stiphra, and N. sporadica. 



Hedley, C— Studies on Australian Mollusca. Ft. i. Proc. Linn. Soc. N.S.W., 

 1900, pp. 87 — 100, pis. iii — iv, and 4 figs, in text. 



Mr. Hedley hopes in this series of papers to "fix by illustration the identity of 

 such unfigLired species as" he can obtain, and to note the occurrence of species on 

 the coast of N. S. Wales not previously recorded. In the present part he treats of 

 the following : Sirius, n. gen., type Raulinia badia, T. -Woods. The author agrees 

 with Tate in considering r!:ii/Iiiiia indistinguishable from the prior Isapsis, H. and 

 A. Adams. Fossarics si/dii, i/f ii.sis, and Cuuthouyia acideata. Mcnon a new genus 

 o{ Eulimidac, with M. (ihccji-s as the type. Sella attenuata, and Teinostowa orhitum. 

 In addition to the above mentioned new species, figures of the following are also 

 given: Stylifer loddcrae, Pelt., Zcidora tasmanica, Bedd., Amauropsis mocrchi, 

 Ad. and Ang., Loddcria ininima, T. -Woods, Fissuridea lineata, Sby. , and the 

 animal of Notarchus ylaucus, Chsm. 



Simroth, H. — Ueber einige Nacktschnecken von Montenegro and Corsica. 

 Nachr. d. Deutsch. Malak. GeselL, 1900, pp. 77 — 95. 



The following are described as new : Limax icohlbercdti, L. woltcrstorffi, L. 

 ohscurus, Agrioliniax corsicus, Amalia dalmatini, Am. viontenegrina. The 

 absence of any figures considerably detracts from the value of an otherwise very 

 interesting paper. — W. E. C. 



