26 THE NAUTILUS. 



Cape Fear, North Carolina, to the northern shores of South 

 America. 



Atrina serrata Sowerby, 1825, (-J- squamosissima Phil., 1849; -f- 

 seminuda Reeve, non Lam. ; -j- muricata Holmes, non Linne or 

 Reeve ; -f seminuda of American authors, not Lam.). 



Cape Hatteras, North Carolina, to Guadeloupe, West Indies. 



The type of serrata was a very young shell with finely developed 

 sculpture. The true Pinna muricata (L.) Reeve, is probably an 

 Oriental species, it is not at present known from America. 



ON TWO SO-CALLED " BULIMI " FROM THE NEW HEBRIDES. 



BY C. F. ANCEY. 



Several years ago, Dr. Wm. D. Hartman described and figured 

 two very interesting land shells from Segon Island, New Hebrides 

 Archipelago, under the names of " Bnlimus " ruga and " Bulimus " 

 JBernieri. The English diagnoses and illustrations of these appeared 

 in the Proceedings of the Academy of Natural Sciences of Philadel- 

 phia, 1890, page 284, plate III, figs. 1 and 2. These shells were 

 until quite recently known to me from the figures and descriptions 

 quoted above, but I succeeded when in Paris in December, 1896, in 

 procuring specimens. My opinion was they were not at all 

 " Bulimi " as suggested by Dr. Hartman, but modified forms of the 

 Diplomorpha type. I now think there can be but little doubt they 

 belong to the latter genus. The texture of shell, outline and exter- 

 nal characters are not dissimilar, and in the best preserved speci- 

 mens of Diplomorpha ruga and bernieriboth have the throat tinged 

 with blood-red color as in the typical D. iayardi, although the de- 

 scriber mentioned the fact in one of them only. No epidermis re- 

 mains on the shells, not very numerous indeed, observed by me, but 

 it may be very deciduous, and its absence gives the shells a rough 

 and uneven appearance. I am indebted to Mr. Ph. Dautzenberg 

 for a nice example of bernieri, and the shell is somewhat straw- 

 colored like ruga. Of the latter, I procured two specimens, one 

 much larger than the type, the other, on the contrary, considerably 

 smaller. The parietal denticle is wanting in the species under con- 

 sideration, as well as in Diplomorpha delatouri. 



Segon Island, the locality where ntga and Bernieri were found, 

 is, I believe, in the Espiritu Santo group, that is, in the northern 



