Bibliographical Notices. 275 



in Malacozoology, together with the indication of the writer who 

 gave them, and the time at which he did so, the work in which 

 each was first described, the various senses in which the same 

 name is used by various writers, and the synonyms or names desig- 

 nating the same object in the works of other writers ; in short, an 

 historical account of every genus, containing all notices of import- 

 ance with regard to it. It is impossible, as the author himself de- 

 clares, that a first essay of this sort should be absolutely complete ; 

 but from the whole of the works which he was able to peruse, and 

 these include all the more important ones for his purpose, the above 

 particulars are extracted with the utmost accuracy, and all names 

 and corrections which may subsequently come to the author's know- 

 ledge are to be published in a supplement at the end of the work. 



The first part of the ' Primordia' has just been published, in which, 

 after a short preface, the author has thought it necessary to direct the 

 reader's attention to those excellent laws of nomenclature proposed 

 by Linnaeus in his ' Philosophia Botanica,' adapted and illustrated 

 according to their use in Malacozoology (pages vii.-xiv.). Then 

 follow the complete titles of 170 works, perused and quoted by the 

 author, in chronological order ; and the remaining sheets of this part 

 contain the letter A. of the alphabetical index itself. 



The index comprises all names of classes, orders, tribes, families, 

 genera and subgenera of living and fossil Mollusca, excluding the 

 Cirripeda, Tunicata and Rhizopoda, which do not belong to the Mol- 

 lusca, although still referred to this class by some naturalists. 



Figures of Flowering Qactece, edited by Pfeiffer and Otto ; with 

 German and French descriptions. Vol. i. 1843 ; Vol. ii. Nos. 31 

 & 32, 1846. 



This work gives coloured figures of flowering Cactece, the greater 

 part of which had not yet been figured. The first volume contains 

 in six parts (from 1838-1843) natural- sized figures of Mammillaria 

 bicolor, cirrhifera, Seitziana, uberiformis, uncinata, eriacantha and 

 pycnacantha ; Echinocactus Sellowianus, centeterius, phyllacanthus, 

 leucacanthus , acutissimus and hybocentrus ; Echinopsis multiplex ; Ce- 

 reus flagriformis , Curtisii, coccineus, setaceus, eriophorus, undatus, 

 Schrankii ; Phyllocactus Hookeri, Phyllanthus and latifrons ; Epiphyl- 

 lum Altensteinii \ Rhipsalis platycarpa and pentaptera ; Opuniia Sal- 

 miana, curassavica, foliosa, coccinellifera, brasiliensis, and Pereskia 

 Bleo. — Vol. ii. No. 1 : Discocactus insignis ; Echinocactus Pfeifferi, 

 turbiniformis ; Echinopsis oxygona ; Cereus peruvianus. — Vol. ii. 

 No. 2 : Echinocactus tetracanthus ; Echinopsis turbinata and pectinata ; 

 Mammillaria zephyranthoides, and Pfeiffera cereiformis, a new genus 

 of Rhipsalidece described by the Prince of Salm-Dyck. 



