CURRENT LITERATURE. 29 



BakeP, F. C. — A Revision of the Limnaeas of Northern Illinois. Trans. Acad. 

 Sci. St. Louis, 1901, vol. xi, pp. I — 24, pi. i, and 13 figs, in text. 



The author recognises nine species in Northern Illinois viz., L. stagnalis, L., 

 rcflexa, Sa-y, pa hi sir is, O. F. Miill., cajycraia, Say, cuhcnsis, Pfr., columella, Say, 

 Jiuviilis, Say, dcsidiosa, Say, and catascojnum. Say. He is of opinion that a new 

 classification is required, based upon anatomical characters ; the present grouping 

 by shell chnracters being totally unsatisfactory on account of the extreme variability 

 of the individuals. In support of this statement, he points out that different forms 

 of L. cmarginata, Say, var. mighelsi, Binn. , which he has recently examined, can 

 be placed in all of the usually recognised subgenera, so-called (Radix, Bulimnea, 

 Limnophym, etc.). The typical cmarginata is typical of Limnophysa, the var. 

 mighelsi oi Radix, whilst all the intermediate forms occur connecting the extremes. 



Of the above mentioned nine species, descriptions are given in nearly all cases of 

 the shell and animal, jaws, radula, distribution, and habitat, followed by critical 

 remarks upon the synonymy, variation, etc. 



Hedley, C— Studies on Australian Molluscs. Pt. II. Proc. Linn. Soc. N.S.W., 



1900, pp. 495 — 513, pis. XXV — xxvi. 



The author continues his interesting studies on the lines laid down in part i. A 

 large number of additions to the Australian fauna are recorded, in addition to the 

 following new species : Puncturclla kcsteveni, Liotia rostrata, L. jihiltata, 

 Scalcuustuma striatum, Leucotina hclva, Diplommatina oreadis. Salinator, nom. 

 nov. is suggested for the group typified by Ampullar ia frag His, Lam., which will 

 replace ihe Ampullar ina of authors, not Sowerby. The Myl Ma inacqualis of Dall, 

 is probably the M. gcmmata of Tate. It seems now definitely settled that the name 

 Nerila melanotragits, E. A. Sm., has priority over N. saturata, Hutt. The genus 

 Menon proposed in the first part of these Studies (p. 90) would seem to be synonymous 

 with Cliileutoinia, Tate and Cossmann, the former name is therefore withdrawn, but 

 Mr. Hedley maintains that the genus must be included in the Eulimidac (where he 

 placed Menon) and not in the Rissiodae. 



Melvill, J. Cosmo. — Description of Bulimulus duJcinficldi, n. sp., from Parana, 

 Brazil. Proc. Malac. Soc. Lond. , 1900, vol. iv, p. 116, fig. 



Woodward, M. F. — Note on the Anatomy of Valuta ancilla (Sol.), Ncptuneopsis 

 gilchristi, Sby., and Voluntilithcs abyssicola, (Ad. and Rve. ). Proc. ISIalac. 

 Soc. Lond., 1900, vol. iv, pp. 117 — 125, pi. x. 



Sowerby, G. B. — Descriptions of new species of Marine Mollusca collected by 

 the late Otto Koch at the Island of Cebu, Philippines. Proc. Malac. Soc. 

 Lond., 1900, vol. iv, pp. 126 — 129, pi. xi. 



Wiegmann, Fritz.— Anatomische Untersuchungen von Solaropsis. Nachr. 

 Deutsch. Malak. Gesell., 1900, pp. 178—184. 



Weigmann, Fritz. — Beitrage zur Anatomic, i. Anatomische Untersuchungen 

 einiger mittel-italienischer Arten. Nachr. Deutsch. Malak. Gesell., 1901, 

 pp. 8—16. 



MollendOPff, 0. von. — Ueber einige Nomenclaturfragen. Nachr. Deutsch. 

 Malak. Gesell., 1900, pp. 161 — 178. 



Nagele, G. — Einige Neuheiten aus Vorderasien. Nachr. Deutsch. Malak. Gesell. 



1901, pp. 16 — 31. 



Sterki, V.— New Pisidia. Naut., 1901, vol. xiv, pp. 99—101. 



