SYLLIDAE 125 



Syllis prolixa, Ehlers. 



Ehlers, 1901, p. 92, pi. ix, figs. 1-7. 



Monro, 1930, p. 100, fig. 32. 



Syllis longifilis, Ehlers, 1901, p. 95, pi. x, fig. 3. 



Occurrence. St. 53 (numerous). 



Specific characters. Up to about 10 mm. in length. The back is marked by 

 transverse brown bands. There is one band at each intersegment and another, widely 

 interrupted in the median line, in the middle of each segment. The head is broader than 

 long and there are two pairs of eyes. The pharyngeal tooth is terminal ; and the pharynx 

 extends to the 12th chaetiger and the proventriculus to the 22nd. The longer dorsal 

 cirri have about 50 articles. The bristles are unidentate. 



Remarks. This species is very close to Syllis vittata, Grube. 



Syllis sclerolaema, Ehlers. 



Ehlers, 1901, p. 86, pi. x, figs. 1-2. 

 Monro, 1930, p. 102, fig. 35. 



Occurrence. St. WS 85 (7); WS 244 (i); WS 246 (2); WS 762 (2); WS 771 (numerous); 

 WS 773 (4); WS 782 (4); WS 856 (2). 



Specific characters. Up to about 35 mm. in length. The head is very short, twice 

 as broad as long. There are two pairs of minute eyes, the anterior larger than the hinder. 

 The palps are very broad at the base. The pharynx extends to the 15th chaetiger and the 

 proventriculus to the 22nd. There is a terminal tooth and a circlet of 10 papillae. 



The dorsal cirri are inserted rather high up above the foot and the longer have about 

 40 articles. The difference between the longer and shorter dorsal cirri is not marked. 

 There is a large and tapering ventral cirrus. 



The foot is rounded in outline and has two unequal lips. It is supported by two or 

 three acicula and carries a number of bristles, broad at the head of the shaft and with 

 the articulation between blade and shaft obscure. The blade has the appearance of an 

 uninterrupted continuation of the shaft (pseudoypsiloid) and ends in a bidentate hook. 



Syllis brachychaeta, Schmarda. 



Augener, 1918, p. 247, pi. iv, figs. 83-85; pi. v, fig. 98; text-fig. 20. 

 Benham, 1927, p. 55. 



Occurrence. St. 190 (2). 



Specific characters. Up to about 30 mm. in length. The head is transversely oval 

 and there are two pairs of eyes. The tooth lies in the front of the pharynx which extends 

 to about the loth chaetiger; the proventriculus reaches to about the i8th. The short 

 dorsal cirri have a characteristic spindle-shaped appearance and are composed of about 

 12 articles. The bristles have rather short bidentate blades. 



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