286 ANNELIDA 



S. leidyi Quatrefages (S. picta Verrill). More than 150 pairs of 

 elytra present; color grayish with a mid-dorsal stripe; head brown with 

 a central red spot and a white spot on each side; length 15 cm.; width 

 4 mm.: North Carolina to Massachusetts Bay, in shallow water. 



FAMILY 2. PHYLLODOCIDAE. (FiG. 452, E.) 



Elongated, active polychsets with broad, leaf-like dorsal and ventral 

 cirri which do not cover the back; prostomium with 4 or 5 short ten- 

 tacles and 2 or 4 eyes; peristomium with usually 4 long cirri on each 

 side; proboscis with longitudinal rows of prominent papillae: about a 

 dozen genera with numerous species. 



Key to the genera of Phyllodocidae here described : 



! Four pairs of peristomial cirri present. 



61 Four tentacles 1. PHYLLODOCE 



6 2 Five tentacles 2. EULALIA 



c 2 Two pairs of peristomial cirri 3. ETEONE 



1. PHYLLODOCE Savigny. Body long, slender, and flattened, with 4 

 tentacles on the prostomium, and often a pair of rudimentary parapodia 

 on the peristomium together with the cirri: about 60 species, 7 in New 

 England. 



P. gronlandica Oersted. Color green or yellowish with irregular 

 brown markings ; usual length 10 to 15 cm. : New Jersey to Greenland, 

 from low-water mark to 50 fathoms. 



P. catenula Verrill. Color pale green with longitudinal rows of 

 brown spots on the back; prostomium longer than broad, with a pair of 

 large brown eyes; tentacles short; peristomial cirri very long; length 

 up to 7 cm.; width 1.5 mm.: Rhode Island to Bay of Fundy and north- 

 wards, from low-water mark to 50 fathoms; common. 



2. ETTLALIA Oersted. Body slender and flattened, with 5 tentacles 

 on the prostomium and 4 pairs of peristomial cirri: 7 species in New 

 England. 



E. pistacia Verrill. Color bright yellowish-green; body slender; 

 tentacles short; peristomial cirri long; length 4 cm.; width 1.5 mm.: 

 Long Island Sound to Maine, in 4 to 12 fathoms, among hydroids, etc. 



3. ETEONE Oersted. Body slender, flattened with 4 tentacles and 

 2 pairs of cirri on somite 2 which is fused with the peristomium: 4 

 species in New England. 



E. alba Webster. Color white; length 40 mm.: on mussel beds; 

 New Jersey to Cape Cod. 



FAMILY 3. SYLLIDAE. ( FIG. 452, B.) 



Elongated worms, mostly under an inch in length, with usually very 

 long slender dorsal cirri, which may be flattened; prostomium with 3 



