414 A. E. Yerrill — Marine Nemerteans of New England^ etc. 



Color, when alive, deep salmon or l)right orange-red, flesh-color 

 below. 



Length of the largest examples, 2 to 3'5 meters, or about 7 to 12 

 feet, in extension ; diameter, anteriorly, 6 to 8""", or -30 of an inch. 



When preserved in alcohol this species soon loses all its color, 

 contracts greatly in length, and l)ecomes quite hard ; sometimes the 

 body is considerably flattened, but in most cases it retains its sub- 

 terete form except toward the posterior end. The head often shows 

 the shallow, dorso-lateral, longitudinal foss;e (not slits) and the two 

 large anterior groups of ocelli can usually be seen indistinctly as 

 dark rounded patches beneath the thick outer integument. The 

 small proboscis is often protruded a short distance, its pore being 

 then rather small and slightly below the tip of the snout. The 

 mouth is not visible in the preserved specimens, but my original 

 sketches, made from life, show what I then supposed to be the con- 

 tracted mouth beneath the head, distinct from the proboscis-pore. 



In some horizontal sections of the head the anterior ocelli form an 

 upper pair of transverse groups nearer the front than the sides of 

 the head, while two smaller clusters; lower down in front, seem to 

 be nearly separate from the up})er ones. In some specimens these 

 large anterior groups are formed of four or five transverse horizontal 

 rows, of which the upper row runs back to a small lateral cluster of 

 ocelli. The a^sophagus has a large i)licated anterior portion in the 

 head. The mouth appears to open decidedly behind the proboscis- 

 pore. 



In sections of the body the intestine, blood-system, and muscular 

 layers are nearly as in Amphiporus, but the muscular layers are 

 unusually thick. 



One specimen, taken August 12, 1873, contained large eggs, 

 arranged in about six rows of sacs, above and at the side of the in- 

 testine, on each side. The armature of the proboscis has not been 

 observed, but in other respects the proboscis agrees with that of the 

 allied species ; the length of the anterior region is about twice the 

 diameter of the body ; the posterior portion is long and slender. 



Off Cape Elizabeth, 68 fathoms, soft mud, August 12, 1873 ; Gulf 

 of Maine, 88 fathoms, mud, station 45, 1874 ; off Martha's Vineyard, 

 192 fathoms, fine sand and mud, station 869, 1880 ; off Martha's 

 Vineyard, 229 fathoms, sandy mud, station 925, 1881 ; off George's 

 Bank, 852 fathoms, gray mud, station 2531 ; off Block Island, 156 

 fathoms, fine mud and sand, station 2537; off Block Island, 131 

 fathoms, fine sand, station 2544, 1885, (U. 8. Fish Commission). 



