COE: NEMERTEANS OF WEST AND NORTHWEST COASTS. 253 



61. Amphiporus paulinus Punnett. 

 Proc. Zool. Soc. London, p. 92, 1901. 



Amphiporus paulinus Coe. Harriman Alaska Expedition, 11, p. 155- 



1903. 



This species is descril)ed by Punnett as being a slender form, 

 50-90 mm. in length and np to 4 mm. in greatest diameter. 



Color in life unknown, ])ut after preservation the worms assume 

 a pale yellowish brown color dorsally, and are almost white ven- 

 trally. 



Submuscular glands well developed, reaching back to intestine. 

 Intestinal caeca do not extend nearly to brain. 



Proboscis sheath extends only about six sevenths the length of 

 the body ; the proboscis is about three fourths as long as body and 

 contains 15 neiwes. Its armature consists of central stylet and 2 

 pouches with 4 reserve stylets each. Basis is of same length as 

 central stylet. A single efferent nephridial duct lies on each side. 

 C'erebral organs in front of brain. There are mimerous ocelli. 



Habitat. — Collected by Professor D'Arcy Thom[)son, Pribilof 

 Islands, Bering Sea (Punnett : 01). 



No specimens answering this description have come into my 

 hands from any of the numerous collections made in Alaska, 

 although I have seen no iiemerteans from the islands indicated. 

 This species is quite distinct from any other known form of the 

 genus, which is so abundantly represented on the west coast of 

 North America. 



62. Amphiporus punctatulus, sp. nov. 

 PI. 21, tigs. 129-140; PI. 24, %. 194. 



Head and anterior portion of body rather narrower than parts 

 farther back, but head is not marked off from I'est of body. A pair 

 of shallow oblique grooves lie upon sides of head as usual. Poste- 

 rior portion of body flattened doi'so-ventrally ; posterior extremity 

 much flattened, with rounded posterior outline. 



Size. — The fifteen specimens contained in the two lots mentioned 

 below were all between 35 and 50 mm. in length, and about 4 mm. 



