Page:Smithsonian Miscellaneous Collections, Volume 85.djvu/95

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 * Canadia setigera Walcott, 1911, Smithsonian Misc. Coll., vol. 57, p. 119, pl. 23, figs. 1-3.
 * Canadia setigera Walcott, 1916, Ann. Rep. Smithsonian Inst., 1915, pl. 12, figs. 1-3.

The original description states that "this species differs from C. spinosa in being more elongate, slender, and with much smaller bundles of finer setae."

It is further stated that a series of 36 specimens shows gradation between the two types originally illustrated. It seems, however, that in reality several distinct forms are included in the species as now constituted.

Plesiotypes.— U. S. N. M., Nos. 83930a-c.

A single wide Canadia that shows the body annulations very well and that has numerous setae seems to differ from C. spinosa mainly in the larger bundles of setae.

Holotype.—U. S. N. M., No. 83932.


 * Canadia irregularis Walcott, 1911, Smithsonian Misc. Coll., vol. 57, p. 120.

Original description.—"A slender species not over 20 mm. in length. The setae are irregular in size and appearance and suggest partially worn macerated specimens of the slender forms of C. setigera."

The specimens on which this description was based are now illustrated for the first time. A study of the figures, however, causes some doubt to arise regarding specific differentiation from C. grandis.

Lectotype and paratypes.— U. S. N. M., Nos. 83933 and 83934a and b.


 * Canadia sparsa Walcott, 1911, Smithsonian Misc. Coll., vol. 57, p. 119.

Original description.—"A slender form with only two strong setae on each very short parapodia. Finer setae may occur but they are not shown in the one specimen."

This form is another that was not illustrated in 1911. In this case two questions may be raised: First, the specific identity of all the specimens seems doubtful, and second, the generic reference to Canadia is also uncertain.

Holotype.—U. S. N. M., No. 83935.