A. E. Jlirri/l — Marine Neniertemis of Neio Engliiud, etc. 425 



ly under stones, among living mussels, between the roots of grasses 

 and algae, etc., from near low-water mark nearly up to high-water 

 mark of medium tides. 1 have collected it at Great Egg Harbor, 

 N. J.; New Haven, Conn.; Noank, Conn,; Newport, R. I.; Wood's 

 Holl, Mass.; in the harbors of Provincetown, Barnstable, Salem, and 

 Gloucester, Mass.; Portland and Eastport, Me., etc. 



This S])ecies is very gregarious, a large number usually living- 

 coiled up together in a tangled mass, from which, however, the in- 

 dividual worms can easily disengage themselves when disturbed. 

 It occurs nearly up to high-water mark where other nemerteans are 

 not found. 



Superticially this species resembles, in color and general a|)})ear- 

 ance, the young of L. viridis (dark green variety), but it is relative- 

 ly much longer and more slender, and has a much longer and nar- 

 rower head, with decidedly longer lateral slits, and the mouth is 

 placed much farther back. 



Lineus arenicola Veniii. 



7'e,trastetnina{'^) nren'kol((. YcrviW, liiverteljiiite Animals of Viueyaid 8oiiud, etc., 

 p. 335, pi. xix, fig. 98, 1873. 



PLATE XXXVIII, FIGURES 5, bCl. 



Body subterete, long, slender, slightly depressed, of nearly uni- 

 form width ; the head is very versatile, usually sub-conical or lanceo- 

 late, flattened, occasionally becoming partially distinct from the 

 body by a slight constriction at the neck. Ocelli four, those in the 

 anterior pair nearer together, The lateral fosste are long, and dee}) 

 slits on the sides of the head. Mouth small, often sub-triangular, 

 situated Just back of the i)osterior ends of the lateral fossiu. Body 

 deep ilesh-color or pale purplish. 



Length about 100""", in extension. 



Savin Rock, near New Haven, Conn., in sand at low- water mark. 



This species has not been taken except in the original locality. It 

 ai^pears to be very rare in our waters. Possibly it is a southern 

 s[)ecies that does not ordinarily live so far north. 



Lineus pallidas Veniii. 



Lineus paUidus Verrill, Notice of Recent Addit. to Mar. Invert., Part I, in Proc. 

 National Mus., ii, p. 18G, 1879. 



PLATE XXXVII, FIGURES 9, 9rt. 



Body long and very slender in extension, subterete, attenuated 

 posteriorly. Head elongated, usually obtuse and wider than the 



