Q'i 2 THE MARINE ANNELIDES OP THE ORDER SERPULEA, 



broader but short geniculate blade which rapidly tapers to a fine 

 point. Along the outer side of the blade runs a row of minute 

 denticles. The dorsal seta? of the remaining thoracic segments 

 are much more prominent but not very numerous; they are 

 terminated sometimes by short blades which resemble in form 

 those of the first notopodium, but are devoid of the denticles ; 

 sometimes by flattened discs. The ventral uncini are very 

 prominent hooklets. 



In colour the body is pinkish ; the branchiae light green with 

 narrow longitudinal lines of brown ; the membranes between the 

 branchiae are white. 



The tube is of a soft membranous character. 



This species occurs with Serpula vasifera and Pomatoceros 

 elaphus under large stones, etc., in Port Jackson. 



13. SABELLA PUNCTULALA. N. Sp. 



The general colour of this species is green, due partly to net- 

 works of minute pseudohsemal vessels on the surface, partly to the 

 green ova. The dorsal surface is brownish green. The win le 

 surface of the body is ornamented with minute, irregular, rounded 

 spots of a dark crimson, and still smaller dots of greenish white; 

 similar dots occur in pairs at regular intervals along the stems of 

 the branchiae ; the latter are ornamented also with transverse 

 green and brown bands, here and there one of rose-pink, and 

 occasionally one of Naples yellow. There are about fifty branchiae, 

 and they are devoid of connecting membranes. The collarette is 

 represented by a low fold on the dorsal side stopping short on the 

 ventral side near the parapodia ; between the ventral ends of the 

 fold is a deep, longitudinally-directed depression continuous 

 behind with the narrow dorsal groove. The body contains sixty 

 segments The dorsal setae are tapering at the extremity and 

 finely feathered on one side near the apex, resembling closely the 

 corresponding structures in Serpula vasifera. The ventral 

 uncini are similar to those of the preceding species. The length 

 is nearly an inch. 



This species occurs about low- water mark in Port Jackson. 



