242 



RECTIFICATIONS. 



Since the time when the printing of the " Expedition Shells " was 

 begun, in 1846, great changes have been made in nomenclature. 

 Very many new genera and subgenera have been instituted, some 

 of which have been fully established by the structure of the mollusks 

 producing the shells. Meantime, also, the same species has, in many 

 instances, been described by diiferent authors under different names. 

 Some of the most important rectifications, thus becoming necessary, 

 are given below, and are, for the most part, indicated by being in- 

 closed in brackets [ ]. 



Page 3. Chiton [Onithochiton] quercinus, jaspideus (p. 4) ; den- 

 tiens (p. 6.) 



Page 3. Chiton [Lophyrus] jugosus. 



Page 4. Chiton [Lepidopleura] platessa. 



Page 4. Chiton fruticosus = C. divergens Rv. (1847.) 



Page 5. Chiton [Leptochiton] pruinosus, interstinctus. 



Page 5. Chiton [Lucia] confossus (6) petaloides. 



Page 5. Chiton [Chastopleura] muscosus, vespertinus. 



Page 6. Patella talcosa = P. cuprea Rv. (1854.) 



Page 7. Patella [Tectura] fimbriata = P. cinis Rv. (1854.) 



Page 8. Patella Paumotensis = P. cretacea Rv. (1854), and pos- 

 sibly may be P. pentagona Born. 



Page 8. Patella luctuosa Rv., may be P. margaritaria Chem. 



Page 8. Patella piperata seems to be P. rustica L. 



Page 9. Patella [Scutellina] cinnamomea. 



Page 9. Patella [Nacella] instabilis. 



Page 9. Patella [Scurria] conica. 



Page 9. Lottia [Tectura] pintadina, probably — patina Esch. ; 

 some of its varieties are T. mesoleuca Menke (1851) diaphana, 

 Cumingii and verriculata Rv. 



Page 9. Lottia [Tectura] onychina. 



Page 9. Siphonaria normalis — S. funiculata, postea lirata Rv. 

 (1856.) 



