Annelida Cb^jtopoda of New Jersey. 103 



outer margin fringed ; from two to seven rather stout, cylindrical papillae arising 

 from the surface, near the posterior margin ; last seven segments without elytra. 



Feet (fig. 2) of the usual form, margins of both dorsal and ventral rami with 

 flattened somewhat triangular prolongations ; ventral cirri arising at about the 

 outer third and projecting a little beyond the foot, sparsely covered with papillae 

 similar to those found on the superior cirri. 



Setae of dorsal ramus quite stout (fig. 4), numerous, about half as long as the 

 ventral setae, although the longest dorsal are as long as the shortest ventral ; those 

 of the ventral ramus (fig. 3) long, numerous, ending in a single curved point. 

 The dorsal setae are usually more numerous than in fig. 2, very nearly concealing 

 the prolongation of the ramus. 



Color. Head, flesh-color ; palpi, brown with white tips ; antennae and all 

 superior cirri with one or two black rings at about the outer third; elytra 

 extremely variable ; they may be white, yellow or flesh-color, with markings 

 varying much both in form and extent, and in color from light brown to very 

 dark brown ; on one specimen the elytra were light orange, with transverse linear 

 markings of dark brown, on the anterior segments ; body usually white above, 

 without markings, or with transverse lines or spots of black or purple ; the last 

 segments have usually black markings ; the ventral surface may be white, or 

 white tinged with red or purple. 



This species is very fragile, readily breaking up and losing their elytra when 

 disturbed. Middle third widest ; last third tapering rapidly ; first third slightly 

 tapering. 



Length of adult specimens, 25 mm ; width, 4-6 mm . 



Common, associated with Lepidonotus squamatus, and like that species 

 abundant on beds of Mytilus edulis. 



LEPIDAMETKIA Webster. 



Armel. Chtet. of the Virginian Coast, p. 209. 1879. 

 Lepidametria commensalis Webster. 



Op. cit., p. 210, plate iii, figs. 23-31. 



Not common ; only three specimens were collected. 

 Lives in the tube of Amphitrite ornata Verrill. 



Fam. SIGALIONID^E. 



STHENELAIS Kinberg. 



Annulata Nova., etc., Ofvers af Kongl. Vet-Akad-Forh. 1855. 



Sthenelais picta Verrill. 



Verrill. Invert. Animals of Vineyard Sound, etc., p. 582. 1874. 

 Webster. Annel. Chset. of the Virginian Coast, p. 213. 1879. 



Not common. Dredged. 



