MOLLUSC A. 
117 
Under the title, “ Abbildungen iind Besclireibungen neiier 
Oder wenig gekannter Concliylien,” R. A. Philippi has com- 
menced a new work at Cassel, the first number of which has 
appeared. Cassel, 1840. 
It contains six plates, upon each of which, species of one genus only 
are represented. The plates are also numbered according to the genera, 
so that, at the conclusion of a volume, or of the whole work, they can 
be arranged systematically. The aim of the work is to represent, in 
good plates, new or little known Shells, — which aim it seems likely to 
accomplish, as the more recent plates of the second number for 1843, 
which has already appeared, are progressively improving. Those of the 
first number contain the genera Melania, Stromhus, Helix, Natica, and 
Unio. 
G. B. Sowerby’s Thesaurus Conchyliorum, or Figures and 
Descriptions of Shells, Part 1, London, 1842 (the other parts 
I am not acquainted with), contains Monographs of Helicina, 
Pupina, Rostellaria, Aporrhais, Strutliiolaria, and Strom- 
hus. 
There are figures of all the species with each number, and the larger 
ones on a scale smaller than nature, so that each plate is full in figures. 
The descriptions are short, consisting merely of the specific character. 
The work is absolutely necessary for the naming of collections. 
Two sheets of text, which conclude the first volume, have 
been received of the Histoire Naturelle de ITle de Cuba, par 
Ramon de la Sagra, in which D’Orbigny has written the 
Mollusca. They contain the genera Pyramidella, Tornatella, 
Siphonaria, Vermetus, Odontostoina, Helicina, and Cyclos- 
toma. The first seven sheets of the second volume have 
already appeared. The work is making rapid progress. 
Numbers seventy-three to eighty-two, of Kiener’s Species 
General et Iconographie des Coquilles Vivantes have appeared 
in the year 1842, and contain the text for the genera Ceri- 
thiimi, Ranella, and Tritonium, and plates of the Tritonium 
and Murex. 
Of Lovell Reeve’s Conchologia Systematica, or complete 
System of Conchology, the fii*st two parts of which have 
161 L 
