22 Moll. 
MOLLUSCA. 
Semper, K. Neuer Bericht ueber die im Juni 1890 erhaltenen 
lebenden Achatinen aus Zanzibar. SB. Ges. Wiirzb. 1890, p. 72. 
Siialer, N. S., & Foerste, A. F. Preliminary Description of North 
Attleborough Fossils. T. c. pp. 27-41, pis. i & ii. 
With many new species. 
Sharp, B. Note on Variations in Bulimus exilis. P. Ac. Philad. 1890, 
p. 148. 
Shimek, B. A New Species of Freshwater Mollusk. Bull. Lab. Iowa, i, 
pp. 214 & 215. 
Siemiradzici, J. V. (1) Kritische Bemerkungen ueber neue oder wenig 
bekannte Ammoniten aus dem Braunen Jura von Popielanz in 
Lithauen. JB. Mineral. 1890, i, pp. 169-176. 
List and notes on fossils ; 3 new species of Cosmoceras. 
. (2) Ueber den Oberen-Jura in Polen und dessen Cephalopoden- 
Fauna. Verh. geol. Reichsanst. 1890, pp. 279-282. 
■. (3) Zur Stammesgeschichte ober-jurassischer Ammoniten. JB. 
Mineral. 1890, ii, pp. 75-87. 
Simroth, H. (1) Ueber einige Aetherien aus den Congofallen. Zool. 
Anz. xiii, pp. 662-664. 
On Shells from the Congo, specially modified by life in a swift 
stream. 
. (2) Beitriige zur Kenntniss der Nacktschnecken. N. Acta Ac. 
L.-C. Nat. cur. liv, pp. 1-91, pis. i-iv 
Trichotoxon , n. g., Atoxon , n. g., Buettneria , n. g., Phaneropus, n. g. 
. (3) Die von Herrn E. von Oertzen in Griechenland gesammelten 
Nacktschnecken. Abh. Senck. Ges. xvi, pp. 1-26, 1 pi. 
Smith, E. A. (1) Note on Hydrobia jenkinsi. Tr. Ess. Club, iv, pp. 
212-214, woodcut. 
. (2) A Reply to Mr. J. T. Marshall’s “ Further Notes on British 
Hydrobice” J. of Conch, vi, pp. 244-247. 
. (3) A List of Shells from the Tizard Bank, Chiua Sea. T. c. 
pp. 265-267. 
. (4) On a New Genus and some New Species of Shells from 
Lake Tanganyika. Op. cit. vi, pp. 93-96. 
Nassopsis , n. g., for Paramelonia nassa var. grandis. 
. (5) List of Land- and Fresh-water Species, collected by Dr. Emin 
Pasha in Central Africa, with Descriptions of New Species. T. c. 
pp. 146-168, pis. v & vi. 
. (6) A List of the Species of Achatina from South Africa, with a 
Description of a New Species. T. c. pp. 390-394. 
