284 ANNELIDA POLYCH^IA — ANDREWS. 



Family NEREIDS. 



NEREIS Cnvier. 

 Nereis limbata Ehlers. 



Ehlers. Die Borstenwiirmer, pp. 567-570. 



Verkill. Invert. An. Vineyard Sd., pp. 318,590, PI. xi, Fig. 51 ; New England An- 

 nelida, part I, PI. V, Fig. 3, 3a ; Note on Nat. Hist, of Ft. Macon (Cones and Yar- 

 row), No. 5. >Proc. Acad. Nat. Sci. Phil., 1876, pp. 299, 300. 



Webster. Annel. Chret. Virginian Coast, pp. 35, 36, PI. vi, Figs. 70-75; Annei. 

 Chtet.jProvincetown, p. 718. 



Nonsexual forms are abundant in dredging material and also nnder 

 stones along the shore, where a large atoke form occurs apparently 

 sexually mature. Heteronereis forms of both sexes were found swim- 

 ming at the surface in September. In aquaria they soon died, but 

 many of them first deposited large quantities of spermatozoa and eggs. 

 The eggs were then fertilized and soon underwent an unequal cleavage. 



Schackelford Bank, Green Rock, Horse Island, etc. 



Nereis irritabilis Webster. 



Webster. Annei. Chaet. of Virginian Coast, pp. 31-34, PL V, Figs. 56-64 ; PL vi, 

 Figs. 65-69. 



Nonsexual forms were found in mud at Crab Point and Shark Shoal 

 "While epitoke female forms were taken in the tow net. 



Nereis pelagica L. 



Malmgren. Annulata Polychfeta, pp. 164-165, PI. vi, Fig. 35. 

 Ehlers. Die Borstenwiirmer, pp. 511-517, PI. xx. Figs. 11-20. 

 Verrill. Invert. An. of Vineyard Sd., pp. 319-591, PI. xi, Figs. 52-55. 

 Webster. Annel. Ch.'iet. Provincetowu, p. 718. 



Numerous small individuals collected near Moorhead. 



Nereis megalops Verrill. 



Nereis alacris Verrill. Proc. U. S. Nat. Mus., vol. 11, 1879, p. 171. 



Xectonereis mefjalops Verrill. Invert. An. Vineyard Sd., pp. 298,592, PL 12, Figs. 



62, 63. 

 Nereis megalops Verrill. New England Annelida, part 1, p. 320. 



The epitoke form originally described by Professor Verrill as Necte- 



nereis megalops was taken at the surface on several occasions, while 



asexual forms and intermediate forms were found amoug Hydroids on 



the piles of Moorhead Wharf. 



Family EUNICID.E. 



EUNICE Ciivier. 

 Eunice ornata, sp. nov. 

 (Plate XIII, Figs. 6-13.) 



Head distinctly bilobed, each part divided in front by a transverse 

 groove into an upper smaller and a lower much larger area. Body 

 rounded above, flat below, tapering gradually towards posterior end. 



