PUGET SOUND NEMERTEANS, 



201 



the Enopla constitute the Metanemertixi, while the remaining 

 representatives of Hubrecht's Palceonemertini {y\z., the EupoHdae) 

 are grouped with the ScJiizonemcrtini under the ordinal term 

 Heteronemertini. 



Thus with the establishment of Biirger's system there appears 

 to vanish the last vestige of artificiality in the ordinal classifica- 

 tion, and for the first time we have a system that may be called 

 a natural one. 



III. SPECIAL DESCRIPTIONS. 

 Protonemertini. 



I. Carinella sexlineata n. sp. 



In form, color and internal anatomy this species very closely 

 resembles C. siipcrba (Kolliker), being marked by creamy white 

 lines and annulations disposed upon a 

 ground color of reddish brown. The 

 principal difference lies in the pattern of 

 the markings, which renders the form 

 the most complicated of the genus. 



Near the anterior margin of the head 

 and well in front of the mouth occurs 

 transverse band i (Fig. 15, I), which in 

 the type specimen consisted of a broader 

 dorsal and narrower ventral half meeting 

 laterally in a sharp posteriorly directed 

 angle. From band i there extends a 

 mid-dorsal line the whole length of the 

 body. A short distance behind the neck^ 

 occurs band 2, which is broad and dis- 

 tinct, but interrupted laterally whence 

 proceed caudad two-paired lateral lines. 



These extend the whole length of the Fig. 15. Corinella sexlineata 



body. A mid-ventral line also com- "• ^p- I. Lateral. II. 

 mences from band 2, arising from a 

 flecked area involving the lower laterals. 



^ Neck ^ constriction separating head from rest of body 



Dorsal aspect. Drawn 

 from alcoholic specimens. 



