POLYCH^TA 



285 



Fig. 454 



Lepidonotus 



squamntus 



(Verrill). 



setae curve over the back to the middle line where they end in hooks; 

 length 12 cm.; width 4 cm.: Vineyard Sound, in from 10 to 100 

 fathoms. 



2. Lepidonotus Leach. Body broad, with nearly parallel sides, 

 and 12 pairs of elytra; head with 3 tentacles, 2 long- palps, and 2 pairs 

 of peristomial cirri; eyes sessile: under stones near tide 

 lines; 2 New England species. 



L. squamatus (L.) (Fig. 454). Elytra tuberculated ; 

 color dark brown; length about 3 cm.; width 8 mm.: very 

 common from New Jersey to Labrador; Europe. 



L. sublevis Verrill. Elytra smooth; color light brown 

 or graj', with sj^ots ; length about 3 cm. ; width 7 mm. : 

 Virginia to Massachusetts; not so common as the above. 



3. Harmothoe Kinberg. Body flattened and elon- 

 gate, with 15 pairs of elytra; head bilobed and with 3 

 tentacles, 2 long palps, 2 pairs of peristomial cirri and 4 

 eyes; segments completely or nearly covered by elytra: 

 2 New England species. 



H. imbricata (L.). Color variable, grayish or brownish, sometimes 

 with a black dorsal stripe; 42 to 44 segments; 2 to 3 cm. long: Long 

 Island to Greenland; from low-water mark to GO fathoms; Europe; 

 North Pacific. 



H. aculeata Andrews (Fig. 455). Surface covered with" spines; 34 



segments; length up to 2 cm.: the com- 

 monest scale annelid at Beaufort, N. C; 

 under stones, etc., in shallow w^ater. 



4. Pholoe Johnston. Body with 

 less than 70 segments and with numer- 

 ous pairs of elytra which alternate with 

 the dorsal cirri anteriorlj- but occur on 

 every segment posteriorly; 2 pairs eyes; 

 2 short peristomial cirri ; 1 tentacle : 

 several species, 1 in New England. 



P. minuta (Fabricius) (Fig. 456). 



Number of segments in adult about 68; 



number of pairs of elytra 44; length 



2 cm.: Cape Cod, and northwards; in shallow water; Europe; North 



Pacific, 



5. Sthenelais Kinberg. Elongated worms with numerous seg- 

 ments (over 100) and but 1 tentacle; 2 pairs eyes; elytra veiy numer- 

 ous, alternating with dorsal cirri anteriorly but on every segment pos- 

 teriorly: many species, 2 in the Woods Hole region. 



Fig. 455 



Fig. 456 



Fig. 455 — Harmothoe aculeata — 

 head with extended proboscis (An- 

 drews). 1, proboscis ; 2, palp ; .">, 

 tentacles ; 4, peristomial cirri : .', 

 prostomium. Fig. 456 — Pholoe 

 minuta (Leunis). 



