146 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Syrnola producta (C. B. Adams). Chemnitzia p. Smith and 
Prime (’TO), p. 395. Odostomia p. Verrill (’73), p. 656. 
A few specimens from Ulva in Upper Harbor. Bare. 
Syrnola fusca (C. B. Adams). Chemnitzia f. Smith and 
Prime (’TO), p. 395. Odostomia f. Verrill (’73), p. 656. 
Four specimens found with the preceding. Bare. 
Odostomia bisuturalis (Say). Chemnitzia b. Smith and Prime 
(’TO), p. 395. Odostomia b. Verrill (’73), p. 656. 
Tolerably common on Ulva and in black mud in shoal, brackish 
water. 
Odostomia trifida (Totten). Chemnitzia t. Smith and Prime 
(’TO), p. 395. Odostomia t. Verrill (’73), p. 656. 
Very common with the preceding. Young of this or preced¬ 
ing species 4 mm. long were taken SejAember 6 on the Ulva. 
Bachiglossa. 
Muricidae. 
Eupleura caudata (Say). Verrill (’73), p. 642. JRanella c. 
Smith and Prime (’70), p. 397. S. 
Common about the oyster beds, unfortunately. Very variable in 
appearance according as the relations of lip and varix differ at 
different stages of growth. 
Uroscdpinx cinerea (Say). Verrill (’73), p. 641. Bueeinum 
plicosum Menke. Smith and Prime (’70), p. 397. S. 
Another common pest of the oyster beds. Egg capsules abun¬ 
dant July 5th to August 15tli. 
COLUMBELLIDAE. 
Anachis avara (Say). Verrill (’73), p. 643. Columbella a. 
Smith and Prime (’70), p. 398. 
var. similis (Bavenel). Verrill (’73), p. 644. 
Verrill and Dali differ widely in their treatment of these forms. 
Verrill (’73) gives A. similis as a distinct species, larger than A. 
avara , more slender and more fusiform, more northern in distribu¬ 
tion. Dali (’89) assigns to A. avara a range from Massachusetts 
Bay to Georgia, while to its “ dwarf form,” A. similis , he assigns a 
range from Cape Lookout to Yucatan. Without attempting a dis- 
