COE : NEMERTEANS OF WEST AND NORTHWEST COASTS. 225 



lets usually with 2 stylets each (PL 24, iig. 191 ; Text-fig. 39). 

 There are 9 or 10 proboscidial nerves. 



Both cephalic and submuscular glands well 

 developed ; cerebral sense organs of moderate 

 size, situated in front of brain. Xephiidia 

 extend through almost entire esophageal 

 region ; a single i)air of large efferent ducts 

 are situated in their middle portions. 



Intestinal caeca short and little developed, 

 not extending nearly to brain. 



Habitat. — The species is known only from 

 Alaska, where it is recorded from Yakutat 

 and from Sand Point on Popof Island (Coe, 

 :01). The few specimens found were from 

 15-25 cm. in length, and were collected 

 between tides vmder stones. 



50. Paranemertes carnea Coe. 



Proc. Wash. Acad. Sci., 3, p. 37, PL 3, figs . 



3, 4; PL 7, fig. 4; PL 8, fig. 7, 1901 ; Harri- 



man Alaska Expedition, 11, p. 37, 1904. 



PL 23, figs. 177, 178; Text-fig. 40. 



This species has a very pale red or fiesh- 

 like color, and may be readily distinguished 

 from other described forms by: (1) the 

 rather stout body, rounded anteriorly, much 

 flattened posteriorly ; (2) head very variable 

 in shape and may l)e ])ointed, roimded, or 

 emarginate in front, according to state of 

 contraction ; (3) usually 20-32 ocelli on head 

 arranged in four more or less distinct clusters 

 (PL 23, fig. 177) ; (4) central stylet of pro- 

 boscis of the Amphiporus type, but the armature is peculiar in that 

 there are usually six pouches of accessory stylets with usually two 

 slender stylets each (PL 23, fig. 178; Text-fig. 40) ; (5) proboscis 

 has 11, 12 or 13 nerves. 



Individuals may occasionally grow to a length of 50 cm., although 

 most of the specimens collected were less than half this length. 



Fig. 39. — Paranemertes 

 pallida. Outline of sty- 

 let apparatus of probos- 

 cis. 



