26 THE NAUTILUS. 
Cape Fear, North Carolina, to the northern shores of South 
America. 
Atrina serrata Sowerby, 1825, (+ squamosissima Phil., 1849; + 
seminuda Reeve, non Lam.; + muricata Holmes, non Linné or 
Reeve ; -++ 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 “ Bulimus” ruga and “ Bulimus” 
Bernieri. 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 bernieri both have the throat tinged 
with blood-red color asin the typical D. /ayardi, 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 ruga and Berniert were found, 
is, I believe, in the Espiritu Santo group, that is, in the northern 
