COE : NEMERTE ANS OF WEST AND NORTHWEST COASTS. 115 



ata and C. cingulata found in the same locality, for the former differs 

 in having two white lines on each lateral margin, and the latter in 

 having two lateral and two dorso-lateral white lines. C. cajnstrata, 

 howeA'er, has but three longitudinal white lines, of which one lies in 

 the median dorsal line and one on each lateral margin. As many as 

 200 narrow white rings often encircle the body ; of these the most 

 anterior ring is incomplete and V-shaped and extends ventrally only 

 as far as the lateral margins of body. Anterior and lateral margins 

 of head bordered by a narrow band of lighter color. Body very 

 slender, sometimes a meter or more in length. 



Lateral sense organs situated in the third white ring, as in C. 

 superha. 



In alcoholic specimens the body back of second Avhite ring 

 becomes very dark brown or nearly black, gradually shading pos- 

 teriorly to pale brown. 



Hohitat. — Living in fragile, twisted, grayish, paper-Uke tubes be- 

 neath stones ; abundant at Orca and Virgin Bay, Prince William 

 Sound, Alaska (Coe, :01). Monterey Bay, California, one specimen 

 collected by Professor Wilson in 1899. 



4. Carinella frenata Coe. 



Harriraan Alaska Expedition, 11, p. 129, PI. 15, tigs. 5, 0; PI. 22, 

 figs. 2, 3, 1904. 



Text-figs. 5, 25, 26. 



This species differs from any other described form of the genus in 

 general color of body and arrangement of markings as well as in a 

 number of anatomical peculiarities. The more striking features of 

 external appearance and internal anatomy are as follows : — 



Body rather firm, moderately slender ; head broader than body, 

 rounded or emarginate in front^ much flattened dorso-ventrally, 

 sharply marked off' from l)ody by deep, lateral, transverse grooves ; 

 proboscis pore and mouth as in related species. 



Length of body, 50 cm. or more ; Avidth 2-3 mm. 



Color. — General color of body usually cream yellow or ochre in 

 anterior third ; sage green in intestinal region, or dull rose or flesh 

 color posteriorly when filled wi\h mature ova. Body marked wdth a 

 series of remarkably sharp, deep l)rown, transverse and longitudinal 



