OF CONCHOLOGY. 5 



L. Oahuensis, Soul. 



1830. L. Oahuensis, Soul., Voy. Bonite, Vol. 2, p. 527, pi. 29, 

 fig. 38—41. 

 " L. affirm, Soul., Voy. Bonite, Vol. 2, p. 528, pi. 29, 

 fig. 42—44. 



1842. L. Sandwichensis, Phil., Archiv f. Naturg. 



" " " Chemn., 2d ed., pi. 4, fig. 25-26. 



1847. L. volutata, Gld., Proc. Bost. Soc, Vol. 2, p. 211. 

 1852. " " Am. Expl. Exp., p. 122, fig. 142. 



L. RUBELLA, Lea, plate 3, figs. 1 — 2. 



1843. L. rubella, Lea, Trans. Am. Phil. Soc, Vol. 4, p. 12. 



This species inhabiting the Island of Kauai may possibly 

 prove to be a var. of Oahuensis. It differs from that species in 

 color, and varies very widely in shape. 



At some localities its whole surface is beautifully reticulated, 

 thus connecting it with the following species : — 



L. RETICULATA, Gld. 



1847. Physa reticulata, Gld., Proc. Bost. Soc, p. 214. 

 1852. " " Am. Expl. Exp., p. 118, fig. 140. 



L. UMBILICATA, Mighels. 



1845. Physa umbilicata, Migh., Proc. Bost. Soc, Vol. 2, p. 21. 



I have not met with any umbilicate specimens of this genus 

 on the Islands. 



L. PRODUCTA, Mighels. 



1845. Physa producta, Migh., Proc. Bost. Soc, Vol. 2, p. 21. 



The two species described as above by Dr. Mighels must 

 probably be abandoned. The types Avere destroyed by fire, and 

 I cannot discover any specimens in other collections in the 

 United States. It is impossible to identify them from the 

 descriptions. 



2. The columella of the following species differs from that of 

 the above in being straight, simple, generally flattened, and 

 white. They may have escaped notice heretofore, the first for 

 reason of its variety, and the other two from their small size. 



L. TURGIDULA, Peasc. Plate 3, fig. 3. 



T. solidiuscula, ovata, striis incrementis tenuiter notata ; 

 transversim minutissime striata ; anfr. 5, convexis, ultimus turgi- 

 dulus, I longitudinis testse fere sequans ; sutura impressa ; spira 



