16 Moll. 
MOLLUSCA. 
Jaarverslag omtrent de zoologisch station der nederlandsche dierkun- 
dige Vereeniging,” Ned. T. D. iii. pp. 44-47. 
The shells of the littoral zone in Jersey are enumerated by E. Duprey ; 
Ann. N. H. (4) xviii. p. 338-344. 
Mactra suhtruncata (Dacosta) found in the Baltic Sea in the stomach 
of Platessa; Wiechmann, Nachr. mal. Ges. 1876, p. 18. 
3. Mediterranean and Caspian Seas. 
Aradas & Benoit have concluded their work on the living sea-shells 
of Sicily, bringing up the number of species to 936 by minute distinc- 
tion ; some new species. Kobelt gives critical remarks on it in JB. mal. 
Ges. iii. pp. 281-284. 
Several additions to the Mediterranean fauna given by the Marchese 
Monterosato {supra) ; the shells have been found in coral masses at 
Sciacca, Southern Sicily. 
78 species from depths of 150-200 metres at Messina, enumerated by 
G. Seguenza, Bull. mal. Ital. (2) ii. pp. 62-65. 
Caspian Sea. The researches made by 0. A. Grimm in various 
depths prove that this sea is not so very poor in animal life as hitherto 
supposed. He distinguishes the following zones ; — 
1. Littoral, to 8 metres : Neritina liturata, Vreyssena, Cardium edide^ 
Hydrohia caspia. 
2. From 8 to 16 metres : Drey sHna poly morpha prevailing. 
3. From 16 to 30 metres : Cardium edule prevailing. 
In both these, there are several species of Cordium, Dreyssena caspia^ 
Hydrohia caspia^ and Lithoglyphus caspius. 
4. From 30 to 36 metres : Dreyssena caspia and Hydrohia caspia. 
5. From hence to 216 metres : Hydrohia caspia^ Lithoglyphus caspius^ 
and Dreyssena rostriformis. 
6. Below 216 metres : Rissoa dimidiata. 
Grimm, “ Kaspinskoe more i ego fauna,” St. Petersburg: 1876, 8vo, pp. 
122-168. 
4. Tropical Atlantic. 
Recent shells from the Cape de Verde Islands [indicated Zool. Rec. xii. 
p. 147] more fully described and figured by E. v. Martens, JB. mal. 
Ges. iii. pp. 236-243. 
West Indies. The known species of Rissoidm^ Gerithiidce^ Planaxidce^ 
Tarritellidce^ and Littorinidee enumerated, their arrangement in genera 
and sub-genera amended, and some new added by Morch, Mal. Bl. xxiii. 
pp. 45-58 & 87-143. The Scalidce [Scalariidoi'], are discussed by the same 
author in J. Ac. Philad. viii. pp. 189-207, pi. xxix. 
5. Indian Seas. 
Red Sea. The known species of Stromhidee, 18 in number, including 
Terehellum, are enumerated, with full synonymy and indication of their 
