parts, 21, 22, 23, 26, 27, 30, 31, 3^4, 35, contain 60 si)ecies and 

 varieties of Bulinus, many of which are quite new. Of the 51 

 Chitones, contained in parts 38 to 45, many are extremely beau- 

 tiful, and some were brought to the country, for the first time, 

 by Mr. Cuming. Parts 46 to 51, contain 32 species and 

 varieties of Cardium. A complete monograph of the small, but 

 interesting genus Eulima, consisting of 15 species, is given in 

 parts 52 and 53. We feel particularly gratified in having been 

 enabled, in parts 58 to 67, to make 57 additions to the known 

 species and varieties of Murex, a genus which should be better 

 studied than it is, including, as it does, many of what may be con- 

 sidered, in form, sculpture and colouring, as the most elegant of 

 shells. Parts 68 to 78, and 80, contain, with a catalogue, all the 

 species and varieties of the genus Fissurella, about 64 in number. 

 Parts 79 and 81 to 83, present illustrations of 15 species of 

 Monoceros, a catalogue of which genus will be given in part 135. 

 In parts 84, 85, 88, 89, 92, 93, are represented 22 species of 

 Ranella. The 60 species of Neritina, figured in parts 86, 87, 90, 

 91, 94 to 100, will be formed into a complete monograph, by the 

 addition of a catalogue, to be given with part 138. 



On summing up the whole, it will be found that the 131 parts, 

 already published, contain 1,062 figures of 714 species and varie- 

 ties making important additions to 15 difterent genera, and 7 

 complete catalogues, 3 more of which will appear in the next 

 seven parts. 



We think it decidedly the better plan to keep works of (his 

 nature unbound in Solanders^ or book-boxes, and arranged ac- 

 cording to the genera ; but for the convenience of subscribers, 

 who may be anxious to bind their copies, we think it best to 

 state that parts 133 and 134, will contain the remainding species 

 of Margarita, with a catalogue. Parts 135 and 136, Chilina, 

 with a catalogue, and also a catalogue of Monoceros. Parts 

 137 and 138, with other subjects, ■■■ catalogue of the genus 

 Neritina. All the subjects hitherto commenced, will then be 

 as complete as we can make them at present. 



G. B. S. Junr., begs leave to add, in conclusion, that no pains 

 or expense will be spared to render the Conchological Illustra- 

 tions increasingly worthy of the place ii must necessarily occupy 

 in the scientific literature of the country. 



