X.-THE ANNELIDA CHvETOPODA FROM PROVINCETOWN AND 



WELLFLEET, MASS. 



By Prof. H. E. Werster and James E. Benedict. 



The annelids on which this paper is hased were collected from June 

 to September, 1879, by the Summer Zoological Expedition of Union 

 College. Of the 90 species found, by far the greater number live 

 between tides. Not much dredging was done, and none at a greater 

 depth than thirty fathoms. Two visits to Wellfleet procured a number 

 of forms not found at Provincetown. Three genera and sixteen species 

 are described as new. Of the genera, Thaumasfoma seems not to be- 

 long to any described family. Eighteen species have their northern 

 limit extended, having been previously found only to the south of the 

 Cape. Nerilla antennata Schmidt and Trichohranchus glacialis Malra- 

 gren are European forms not previously found on our coast. Syllides 

 Oersted is also new to our coast, and is represented by a new species. 

 Cap! fella capitata has not i^reviously been reported from the United 

 States, though found further north. The figures, except figs. 95 — 97, 

 were made by H. E. Webster. 



Family APHRODITID^. 



APHRODITA {Linn.) Kinherg. 



Apheodita aculeata Linn. 



Aphrodita aculeata Linn. Systeina NatiiriB, ed. xii, vol. i, p. 1034, 1767, 

 KiNBERG. Eugeuies Resa, p. 3, pi. i, tig. 2. 1857, 

 Sei.enka. Das Gpfiisssysteni der Aphrodita aculeata, ex Nieder- 



liindi.sches Arcliiv fur Zoologie, pis. iii-iv. 187.*?. 

 Verrill. Invertebrate animals of Vineyard Sound, in Report of 

 U. S. Commissioner of Fish and Fisheries, Part i, p. 580. 1874. 



No large specimens were taken; 20 to 28 fathoms, sand and shells. 



Family POLYNOID^. 



LEPIDONOTUS {Leach) Kinherg. 



Lepidonotus squamatus Kinherg. 



Lcpidonote armadillo Leidy. Marine Invert, Fauna, R, I. and N. J., Ex. Jour. Phila. 



Acad., series ii, vol. iii, p, 16, pi. xi, fig. 54. 1855. 

 Lepidatiotus squamatus Knbg. Fregatten Eugenies Resa. Zoologi, Anuulata, j), 13, 



pi, XV, fig, 15, 1857, 

 [1] 699 



