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17a
Dall

(5) Combine [[line encompassing 5 & 6]]
Synopsis of the Mactridaē of North America, by Wm. H. Dall. [The Nautilus, VIII, No 3, July 1894, pp. 25-28.]
I. A revision of the classification of the Mactridaē of the eastern coast of the United States, with an enumeration of the species.

(6) 
Synopsis of the Mactridaē of North America south to Panama, by Wm.H. Dall [The Nautilus VIII, No 4, Aug. 1894, pp. 39-43]
II. This paper contains a complete revision of the Mactridaē of the west coast of North America, south to Panama, with an enumeration of the species.

(7)
Description of a new species of Doridium. from Puget Sound, by W.H. Dall. [The Nautilus VIII, No 7, Nov. 1894, pp. 73-74]

A description of an interesting new Doridium (D. adellaē, Dall).