604 A. M Verrill — Turhellaria^ Xemertina, and 



Var. lineolata, nov. 



This variety occurs with the preceding form, from which it differs 

 chiefly in color. The cirri and antennae are equall}'^ long, and the 

 setae have the same forms. In formalin each anterior segment is 

 crossed close to the anterior edge by a narrow brown line ; another 

 similar transverse brown line runs across the middle of the segments, 

 but does not reach the sides ; behind the middle of the body these 

 lines gradually fade out. In some specimens they are rather faint 

 even anteriorly. The color in life was not noted. Both varieties 

 were common in the cavities of dead corals, from the reefs ; also in 

 corallines. 



Syllis grandigularis, sp. nov. 



This closely agrees in size and api^earance and in its setae, with 

 S. corallicola. It differs in having a larger and broader head^ 

 widest in front of the eyes, which are black and in a trapeze, and 

 especially in the very large size of the oesoj)hagus and stomach, and 

 their structure. The oesophagus is nearly as long and almost as 

 thick as the stomach, and nearly fills the anterior part of the "body ; 

 its margin is nearly even and entire, but appears to be minutely 

 crenulated when extruded, and the median tooth is very large, blunt- 

 conical, and projects one-third of its length beyond the margin of 

 the extruded proboscis. The stomach is elongated, tapering a little 

 toward both ends ; it occupies 8 segments ; its surface is covered 

 with numerous close, confused and irregular rows of cells,* but they 

 do not form regular, rounded groups, as in most other species. 



The antennae and cirri are all long and slender, — more slender than 

 in S. corallicola and S. catenula, — and composed of numerous round 

 strongly pigmented beads, about as long as broad. The posterior 

 setae are longer than the anterior with strongly incurved acute 

 blades on the lower ones. Allied to S. annularis^ also. 



Length, in formalin, 18™"". 



Syllis (Typosyllis) catenula, sp. nov. 



A smaller and more slender species than the preceding with rather 

 shorter cirri, long palpi, and a rather longer and more cylindrical 

 oesophagus, armed with a small tooth close to the entii'e and even 

 margin, usually with linked markings on back, often causing three 

 rows of pale spots. Head about one-half wider than long (ratio 



*According to some observers these are radial muscular cells, not glandular. 



