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26.

This describes Helicina nesiotica, Leptinaria chathamensis, and Zonites Bauri all new species and notes the occurrence of a new species of Pupa and Bulimulus (Pleuropyrgus) Habeli Stearns.

Dall (William Healey)

On the species of Donax of Eastern North America.

[The same, March, 1892. pp. 125-127] This paper gives the diagnostic features of the different species in tabular form and describes as new D. Emmonsi and D. aequilibrata Dall from the late tertiaries of the Carolinas.

Dall (William Healey)

On an undescribed Cytherea from the Gulf of Mexico. 
[The same, April 1892, pp. 134-135.]