1891.] BAKER — SHELLS FROM THE MAURITIUS. 29 



diagnosis that will cover one form and exclude all the rest. On this 

 account a large number of specific names have been proposed, 

 amounting to fifty or more, but of these only three can be satisfactorily 

 separated as distinct species, with the addition of four varieties. 



Family SCALIDiE. 

 132. Scala rubrolineata, Sowb. 

 ^33- " (Opalia) lamellosa, Lam. Both very common. 



Family EULIMIDiE. 



134. Stylifer speciosus, H. Adams. 



135. " sp. 



136. Eulima major, Sowb. Vide Thes. Conch, t. i6g, f 4. A 

 species received in considerable numbers from Mauritius collectors. 

 Eiiliiiia arciiata, Sowb., is said to be a s3M'ionym. 



137. Eulima Cumingii, A. Adams. 



Family PYRAMIDELLID^. 



138. Pyramidella dolabrata, Linn., var. terebellum, Miill. 

 A common form, very large and with the spiral chocolate-colored 

 bands very deep and conspicuous. 



Family TRITONIDiE. 



139. Triton tritonis, Linn. Several small specimens averag- 

 ing six inches in length. 



140. Triton (Simpulum) pilearis, Linn. A large number 

 received, including the forms aquatilis, Reeve, and intermedins^ Pease, 

 which are by some authors considered distinct. I can see no good 

 characters by which to separate them. 



141. Triton (Simpulum) rubecula, Linn. 



A beautiful set. Some specimens have black blotches between 

 the spiral ribs. 



142. Triton (Simpulum) gemmatus, Reeve. 



143. " (Cabestana) labiosus, Wood. 



144. " (Ranularia) tuberosus, Lam. From the descrip- 

 tion, I should say that T. mauritianus, Tapparone-Canefri, described 

 without figure, should be placed here as a synonym. 



