55 



nre " minutely reticnlated," never smooth. This species was describ- 

 ed by Ml'. Sowerby in Proc. Zool. Soc. Lond, Marcli 1.2, 1814, as 

 CoIumbeUa monilifera, and was also described and figured in the Thes. 

 Conch. CoUimb. p. 144, pi. 40, fig. 177. The figure faithfully ex- 

 hibits the sinus, which is not mentioned in tlio text. The name of the 

 species will be PUurotoma monilifera (Columbella) Sowb. 



Pleurotoma albovittata Ad. Proc. Bost. Soc. Nat. Hist. Jan. 1, 1845, 

 appears to be identical with P. luteo-fasciata Reeve Proc. Zool. Soc. 

 Lond. Oct. 28, 1845. 



Pleurotoma trilincuta Ad. Proc. Bost. Soc Nat. Hist. Jan. 1, 

 1845, appears to be identical v/ith P. trifasciata Gray Mss. in Reeve 

 Conch. Icon. XXXIII, No. 207, Dec. 1845. It is probably a Man- 

 gelia. 



The following species Avere described as Pleurotomae in Proc. 

 Bost, Soc. Nat. Hist. Jan. 1, 1845, but may be referred to Mangelia 

 of Leach, as characterized by Mr. Hinds in Proc. Zool. Soc. Lond. 

 1843, p. 45. 



Mangelia albovittata (Pleurotoma) Ad. 

 " fusca " " 



" dubia " " 



" multilincata " " • 



" trilineata " " 



" candidissima " " 



Buccinum concinnum Ad. Proc. Bost. Soc. Nat. Hist. Jan. 1, 

 1845, is a Columbella, and may take the name of C. decipiens. 



Columbella purpurascens Ad. Proc. Bost. Soc. Nat. Hist. Jan. 1, 

 1845, appears to be identical with G. dormitor Soivb. Proc. Zool. 

 Soc. Lond. March 12, 1844, and in Thes. Conch. Columb. p. 143, 

 pi. 40, fi^. 173. This figure is colofed like a faded specimen. 



Buccinum obesiim Ad. Proc. Bost. Soc. Nat. Hist. Jan. 1, 1845, 

 is a Columbella, and may take the name of C. obesa. The color is 

 more frequently pale yellowish brown, with a very dark spiral band of 

 the same color on the lower part of the whoi-ls of the spire and on the 

 summit of the convexity of the last whorl, with another similar band 

 anteriorly. This species is very closely allied to O. 'atomella Duel. 



Note on Geomelania Jamaicensis Pfr. While No. 3 was in press, 

 I received from Jamaica a fine specimen of this shell, precisely like 

 the Cuvningian specimen. That the differences between this shell 

 and G.^rainor are of specific value, we are therefore more confident. 



