36 Transactions of the Society. 



reference, having headings such as " Textularia, Planche 30, Z. 2 " 

 (Z. 3 ; N. 4, etc.), and each species has a number attached appa- 

 rently referring to a note-book. These are in no way consecutive. 

 On these drawings the name of the species and its phace of origin 

 are always written in ink. At the foot of the sheet the words 

 " Coquilles libres " nearly always appear (see p. 23). I think the 

 letters IST. G. Z. etc. refer to Soldanian figures. 



(v) Sheets full of d'Orbigny's original sketches in outline 

 made under the Microscope. They are on small odd scraps of 

 paper, made originally in pencil and afterwards inked over. 

 Surface decorations and markings are only partially indicated, 

 as in Foruasini's reproductions, which are tracings by Berthelin 

 from these outlines, selected as I have indicated above. ^ Notes 

 in pencil or ink are scribbled upon these sketches, as to the 

 texture and markings of the shells,^ the name proposed to be 

 given to it, and the place of origin. Each one bears a number 

 apparently referring to a note-book. 



(vi) Sheets containing figures cut from published work?, 

 added later by d'Orbigny, from " Diet. Sci. Nat.," " Cuba, 1839," 

 "Vienna, 1846," etc. The figures published in the eight plates 

 of the Atlas to the '' Tableau " generally appear on these 

 sheets. 



It would appear that (v) were made from the specimens direct ; 

 (iv) were made from (v) (some perhaps from earlier authors) ; 

 whilst (i) and (ii) were made from (iv). The whole of the plates 

 could easily be finished by a competent artist from (iv) and (v). 

 Eoughly speaking, there are 70 finished plates (i), 7 partly 

 finished (ii), and 79 framed and outlined plates (iii), making 156 

 in all. The only " Planches " which are incapable of being com- 

 pleted with certainty are the two, coming under (iii), destined 

 for the confused genus " Soldania." ( Vide post, Appendix F., 

 note 21.) These two consist of frames with outlines, but there 

 are no drawings or sketches in the files, and no names, numbers, 

 or references on the sheets, nor have I been able to find type- 

 specimens of any species referred to " Soldania " either in Paris or 

 at La Eochelle. 



In the Alveolina file only, there is a sheet of synonyms from 



* Sometimes, it must be confessed, Berthelin's tracings were too faithful, and 

 remind one of the Chinese tailor who conscientiously reproduced the patches in 

 the worn trousers he was given to copy. D'Orbigny made corrections on these 

 sketches currente calamo, and these are faithfully reproduced iu Berthelin's 

 tracings. Cf. the figure otBulimina arcuata (No. 11 in Appendix I., pi. i., fig. 12), 

 where d'Orbigny mistook a foreign speck for an aperture and put it in. He 

 subsequently put his pencil through it, and this is apparent in Dr. Fornasini's 

 figure. D'Orbigny's method of indicating surface markings is clearly shown 

 in the reproduction of the sketch of Botalia dubia (Plate X., fig. 5), where the 

 papillae which cover the surface of the shell are merely indicated in the manner 

 described. 



^ As, for instance, "plane," " glabre," " imailUe," " assicuUe" etc. 



