COE : NEMERTEANS OF WEST AND NORTHWEST COASTS. 281 



Color. — Pale brownish anteriorly, becoming deep bro'WTi in 

 intestinal region, much paler beneath ; head deep flesh color, inclin- 

 ing to pale brown (PL 2, fig. 23). Color of body consists of innu- 

 merable minute dark brown dots scattered thickly over the deep 

 flesh colored ground color. Intestinal caeca reach forward to brain 

 as dark, lobulated organs. 



After preservation dorsal surface retains a pale brownish color. 



Ocelli. — Usually 25 or more ocelli of small size are situated on 

 each side of head. Sometimes they appear to be ari-anged in anterior 

 and posterior clusters, but are usually irregularly scattered along 

 antero-lateral margins of head as far back as the brain. The ocelli 

 which are situated the most posteriorly are farthest removed from 

 margins of head. 



Proboscis. — Proboscis sheath extends practically to posterior end 

 of body. Proboscis of moderate size, pale pinkish in color. Central 

 stylet very slender and acutely pointed ; basis bell-shaped, rounded 

 posteriorly, and about three fourths as long as stylet. Each of the 

 two lateral pouches contains usually two or three very slender 

 stylets, of size and shape like central stylet. Basis averages about 

 .045 mm. in length and .025 to .030 mm. in width; stylets are about 

 .06 mm. long. 



Liternal orgayxization. — Cephalic glands well developed, but 

 submuscular glands are practically wanting. Pylorus passes back 

 for a long distance before opening into dorsal wall of the broad 

 unpaired intestinal caecum lying beneath it. Tliis caecum sends off 

 nunierous slender, paired diverticula anteriorly and dorsally above 

 the lateral nerves. The most anterior pair of these diverticula 

 extend as far forward as the posterior ends of the dorsal ganglia. 



Cerebral sense organs voluminous, situated almost immediately in 

 front of brain. Ducts pass anteriorly to latero-ventral surfaces of 

 head as in related species. 



N^epJiridia are situated immediately posterior to brain. Rather 

 large tubules lie beside and internal to the lateral nerves and open by 

 means of a single pair of efferent ducts to ventro-lateral margins of 

 body a short distance behind brain. 



Habitat. — Piles of wharf, San Pedro Harbor, California. Not 

 common. Dredged off Santa Catalina Island in 50 fms. 



