Annelida ChjEtopoda of New Jersey. Ill 



anterior eyes, bifurcate at their outer third, swollen at base, three times as long 

 as the head ; median antenna arising back of the eyes, near the posterior margin 

 of the head, one-third longer than the head ; buccal segment hardly distinct 

 from head, bearing two pairs of tentacular cirri, of which the upper had about 

 the length of the lateral antennae, the lower, of the median ; second segment 

 with ordinary dorsal cirrus ; no sexual setae. 



This species was very common from just below water mark to fifteen feet, 

 living on certain forms of sea-weed. In number of individuals it probably sur- 

 passed any other species of Annelid found in the harbor.* 



Fam. NEREHLE. 



NEREIS (L.) Cuvier. 

 Nereis limbata Ehlers. 



PLATE III, FIGS. 21, 22. 



Ehlers. Die Borstenwiirmer, p. 567. 1868. 



Verrill. Invert. Animals of Vineyard Sound, etc., pp. 318, 590, pi. xi, fig. 51. 1874. 



Webster. Annel. Chaet. of the Virginian Coast, p. 235, pi. vi, figs. 70-75. 1879. 



Male. 

 The dorsal cirri of the first seven segments have a peculiar form, which seems 

 to have escaped notice. Near the end they are slightly enlarged (fig. 21), 

 then suddenly become smaller, ending in a delicate, almost filiform appendix. 

 The dorsal cirri of the middle region have one margin crenulated for nearly 

 their entire length (fig. 22) ; the ventral cirri have a few crenulations near their 

 outer end. 



Found living very near high-water mark, and common everywhere in the 

 harbor, except in pure sand. 



Nereis Culveri n. sp. 



PLATE III, FIGS. 23-30. PLATE IV, FIGS. 31, 32. 



Head (fig. 23) emarginate in front ; anterior half of lateral margins concave, 

 posterior half slightly convex ; posterior margin straight ; from the anterior 

 emargination, a deep, triangular depression runs backward to the middle line, 

 so that the front half of the head seems to be divided into two lobes, broadly 

 rounded in front; length to width as two to three. 



Eyes: anterior pair elliptical or elongate-oval, on the middle line, lateral; 

 posterior pair circular, a little within the front pair, close to the posterior 

 margin. 



Antennae remote from each other at base, conical, length to length of head as 

 three to four. 



Palpi very stout with long terminal articles, in extension reaching beyond the 

 antennae, in contraction falling much short of them. 



Proboscis (fig. 24) : it is in the structure of this organ that the chief pecu- 

 liarities of this species are to be found. There are no paragnathi. At the 



* Regarded by Prof. Langerhaus as identical with Autolytus prolifer Grube. (See Zeitschrift 

 fur Wissenshaftliche Zoologie, p. 574. 1879.) 



