ERRATA, CORRIGENDA ET ADDENDA. 



Page 16, line 5, for and term read and term one of. 

 36, 19, J- read -^ to ^. 



42, ,, 19, 20, for the A. sfriata, which is the A. patelliformis, read the 

 A.striata, which is a mere form of the A. patelliformis. 

 ,, 54, ,, 35, for Lima subauriculatus read Lima subauriculata. 

 ,, 123, ,, 11, rectum read intestine. 

 ,, 128, ,, 30, 31, for BRTMACULATA read BIMACULATA. 

 ,, 131, 1, for the branchial artery read the branchial artery or vein. 

 ,, 135, 28, as it has many features of the Myadce and AnatinidoR, read 

 as some authors say it has many features of the Myadce. 



168, 10, Having written to Professor Ed. Forbes in Feb. 1849, on what 

 I conceived to be the improper association of Lutraria with 

 the Mactridat instead of being placed with the Myadee, he 

 replied thus :- 4 . Craig>s Court> Feb fi> Ig49< 



" My dear Sir, 1 quite agree in all you say about Lutraria, 

 and shall keep your letter for the Appendix. So entirely 

 did I agree in the view you take, that I sent the MS. to 

 he printed with the Myadce. The printers, however, mis- 

 laid it, and I was forced to put it in the old place. 

 " Believe me, dear Sir, with many thanks, 



" Most sincerely yours, 

 " W m Clark, Esq." " EDWARD FORBES." 



,, 246, 31, for in the Articulata read in the annelidan Articulata. 



247, ,, 17, van read rear. 



296, ,, 31, ,, Chemnitzida read Chemnitziw. 



310, 20, branded read brindled. 



,, 331, ,, 16, ,, tenebra read terebra. 



444, ,, 22, 23, Dele the words " the cause has perhaps been its anomalous 

 aspect." 



