68 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
DeKay in his work on the Molhisca of New York (part 5 of the 
" Zoology of New York," 1843), described and figured TurriieUa inter- 
rwpta Totten, and refers to Turritella impressa Say and T. aequalis 
Say, as extrahmital species, giving a terse diagnosis of eacli. Pyramis 
striatula Couthoiiy, Odostomia trifida Totten, 0. seminuda C. B. 
Adams, and 0. fusca C. B. Adams are also described and* figured 
and 0. inscidpta DeKay is published as new. This last, however, 
has since proved to be a synonym of Odostomia (Menestho) trifida 
Totten. As extrahmital Odostomiae, he lists Odostomia producta C. 
B. Adams and 0. exigua Couthouy. 
After this no additions appear to have been made until 1851. In 
that year Wm. Stimpson published two papers in the Proceedings of 
the Boston society of natural history, and his "Shells of New Eng- 
land." In the first (Stimpson, '51a, pp. 14, 16) Rissoa ebiiniea 
(= Odostomia (Liostomia) eburnea), the ty]oe of the subgenus Lio- 
stomia, and Chemnitzia modesta (= Odostomia (Odostomia) modesta) 
are described, while the second (Stimpson, '51b, p. 114) publishes 
Chemnitzia dealbata {— Odostomia {Odostomia) dealbata) and Chem- 
nitzia nivea (= Turbonilla {TiirboniUa) nivea). In his "Shells of 
New England" he figures Rissoa eburnea, places Pyramis striatulus 
wrongly under the synonymy of Menestho albula Moller and refers all 
the rest of the Py rami del lidae to Chemnitzia, viz. : Chemnitzia nivea 
Stimpson, C. interrupta Totten, C. producta C. B. iVdams, C. fusca 
C. B. Adams, C. dealbata Stimpson, C. modesta Stimpson, C. bisuturalis 
Say, C. trifida Totten, C. impressa Say, C. seminuda C. B. Adams. 
Odostomia insculpta DeKay is considered a synonym of Odostomia 
impressa Say. 
No important contributions were made to this family after this for 
twenty years. Binney in his edition of Gould's " Invertebrata of 
Massachusetts," 1870, described and figured Odostomia producta 
C. B. Adams, O. fusca C. B. Adams, 0. dealbata Stimpson, 0. modesta 
Stimpson, O. bisuturalis Say, 0. trifida Totten, O. seminuda C. B. 
Adams, 0. impressa Say, Turbonilla interrupta Totten, T. nivea 
Stimpson, Rissoella eburnea Stimpson. 
It was in 1872, that Professor A. E. Verrill published his first addi- 
tion to the Pyramidellidae and in the next twelve years he not only 
increased our knowledge of the then known forms, but added enough 
new species to double their number. The following is a list of his 
additions: 1872, Turbonilla elegans, Aclis polifa; 1873, Turbonilla 
