204 . VL PRINCIPLES OF 



quiato other bodies e. g. Phytolithus enslformis 

 Conchy liolithus Sacculus Condi. Pecten. &c. &c. 

 4. or from the names of authors \vho have culti- 

 vated the study of reliquia e. g. ConchijlioUthus 

 Lesteri Conch. Woodwardii Conch. Plotii. &c. 

 &c. 



Trivial names applied to permanent species whose 

 originals are known, must be formed from the names 

 which the original species bear in the most approved 

 systems. 



The denomination of a plant or animal being in- 

 compleat, except the generic be joined with the 

 trivial name,, both must be used in forming the 

 trivial appellation of the 'fossil species, e. g. CON- 

 CHYLIOLITHUS AnomicR Gryphi CONCHYL. Ostrea 

 varice ERISMATOLITUS Piastres truncate?. &c. 

 &c.f. 



In establishing English names for the different permanent spe- 

 cies, it will be found most convenient to take the name of the family 

 only, omitting that of the genus as, from CONCHYL. Anomites 

 striatus, we would form " the striated Anomite" from ERIS- 

 MATOLITHUS Madreporites floriformis -" the jlower*shaped 

 Madreporite" &c. &c. 



tThe use of two words for the trivial appellation is contrary 

 to the Linnean canon, that " the trivial name must form one 

 word only" This is a rule, however, which Linne himself has 

 not strictly adhered to ; many instances occurring, in the Linnean 

 writings, where an old or long established name, though consisting 

 of two words, is retained as the trivial distinction Thus we have 

 POLYPODIUM Fit. mas POLYP. Fil. famina ASPLENIUM 



