NO. 1425. THOMAS MARTYN—DALL. 429 



Of the above MHra derives from Rumphius, 1705; and OJlva prob- 

 ably from Olea Argenville, 1757. How he came to apply CocJdea^ 

 which had always been used for some form of gastropod, to a group 

 of bivalves remains a mvstery. 



I close this discussion by giving a list of the species iigured 

 by Martyn from his Explanatory tables, those of the first 80 

 plates from our own copy, those of the second eighty from Chenu's 

 reprint, which is unfortunately more or less marred by typographical 

 errors. 



These names are not followed by an authorit}" after the specific name, 

 and they are not all due to Martyn. Some of the species are Linnean, 

 and Cyprxa cai'neola derives from Rumphius. Moreover, until one 

 is familiar with the tables the arrangement is sometimes puzzling. 

 The columns are narrow, space limited, and the engraver seems to 

 have had an artistic fervor for keeping his masses 'balanced.' Thus, 

 when a number of species of one genus follow one another, in several 

 cases the generic name is not put opposite the first one, but at the 

 middle of the group with dashes or vacancies above and below. Then 

 again the specific names are not ranked to the right of the column 

 uniformly, but part to right and part to left, to give the column 

 balance and avoid ungraceful lines — a true engraver's trick. To one 

 accustomed to regular columns of t3^pe in tabular order the arrange- 

 ment seems at first glance helter-skelter; but in nearl}' every case 

 the context, or the indicatory letters of the early plates, enable the 

 puzzle to be solved after a little consideration. 



There are 190 specific names and eight varietal names (engraved as 

 trinomials quite in modern fashion) on the explanatory tables. Among 

 the one hundred and ninety regular specific names there are seven 

 compound nouns, such as peU Is-erniinea and crista-galli; these were 

 not usually at that date hyphenated as we are now accustomed to do. 

 Linnjeus used such names, and they have never been regarded as 

 inconsistent with binominal nomenclature. I have hyphenated these 

 names in the list. There is one case in which the generic name has 

 been accidentalh' omitted, while the English and French trivial 

 names in the column to the left give no clue, as I have not been 

 able to find either of them in any of the lists of early conchological 

 S3"non3'ms. 



One of Chenu's entries, number 82, has been so mangled that I can 

 make nothing of it. It was probably Buccinum vexillum, the figure 

 representing Yoluta vexillum, of modern authors. 



The name suhruhlcunda for a TelUna is repeated in the references 

 to plates 156 and 159 in Chenu's reprint. The species are different 

 and probablv one of these names should be ruhicunda. Similar errors 

 can be corrected onl}^ by reference to an original copy. 



