. 42 



8. R. tenuis, Hinds. 



H. and A. Adams, Genera, ii. 386, 1858. 



9. R. undulata, Gould, Proc. Bost. Soc. Nat. Hist. iv. 80, 



1851. 

 Bost. Jour. Nat. Hist. vi. pi. 15, f. 7, 1853. 



La Paz, Loiver California. 



Genus LABIOSA, Schmidt. 



1. L. anatina, Spengler, Skrivt. Nat. Hist. Selsk. v. 120, 



1799. 



3T((ctra anatina, Spengler. 



2. L. cyprina, Gray. Wood, Index Test. pi. 1, f. 1, 1818. 



Reeve, Conch. Icon. Monog. Mactra, f. 37, 1854. 



3. L. lineata, Say, Jour. Acad. Nat. Sci. ii. 310, 1821. 



Amer. Conch., Binney's ed., 102, 158, pi. 9. 

 31aetra Nuttallii, Reeve (not Liitraria Nuttallii, Conrad), 



Conch. Icon. Monog. Mactra, f. 125, 1854. 

 Mactra 7-ecurva, Wood, Index Test. Sup. f. 2. 



South Carolina. 



4. L. papyracea, Lam., An. sans Vert. (Desh. ed.) vi. 93, 



1835. 

 Sowerby's Genera, f. 2, 1847. 



6. L. ventricosa, Gould, Proc. Bost. Soc. Nat. Hist. iv. 89, 

 1851. 



Bost. Jour. Nat. Hist. vi. 390, 1853. Mazatlan. 



Genus VANGmELLA, Gray. 



1. V. Taylorii, Gray. 



Resania laneeolata, Gray, MSS. Reeve, Conch. Icon. Monog. 

 Lutraria, f. 17, 1854. Hew Zealand. 



Genus ZENATIA, Gray. 



1. Z. acinaces. Quoy. 



Reeve, Conch. Icon. Monog. Lutraria, f. 14, 1854. 



I^eio Zealand. 



2. Z. Cuming'iana, Deshayes, Zool. Proc. 14, 1854. 



Reeve, Conch. Icon. Monog. Lutraria, f. 13, 1854. 



JVetv Zealand. 



3. Z. Solenoides, Deshayes, Zool. Proc. 72, 1854. 

 Lutraria Leshayesii, Reeve, Conch. Icon. Monog. Lutraria, f. 



1, 1854. New Zealand. 



