from the Sorth Sea and adjacent parts. 307 



The proboscis witli its armature, the feet taken from 

 various parts o£ the Ixxly, and the typical bristles of tlie 

 species arc well shown and described in vol. ii. part ii. of the 

 MoDograph *. 



The ficces were found to be in packets, and the masses 

 contaiued pieces of tissue, spon<i;e-s[)icules, and vejretablc 

 matter, which probably gives the green colour to the 

 packets. In the gut of those examined no trace of sand 

 was found. 



Several were females and contained ova which are fairly 

 large. The ova were single, and each had a thick trans- 

 ])arent zona, which, when examined under the iiigh power of 

 a microscope, was studded with an infinite number of small 

 ])ores. The contents of the cases Avere yellow in colour 

 (1^1. XVI. fig. 1). 



This annelid is a tubicolar form, and each tube difFers 

 from its neighbour in design, but all are composed of the 

 tough translucent secretion of the glands, strengthened by 

 pieces of shell, or sometimes attached to an entire valve of 

 Fectcn. According to ^Ir. Arnold Watson, the animals 

 carry about their tubes in caterpillar fashion. 



The first foot of the young form resembles that of the 

 adult, and both cirri are well developed, the dorsal being 

 much stouter than the ventral. Numerous strong yellow 

 sjiines support the foot, and four or five falcate bristles with 

 bifid tips project beyond the skin. In reference to the first 

 foot of the adult, the Monograph states : " though the tip of 

 only one bristle projects beyond the skin, others arc included 

 in the tissues."" The bristles are winged and the folds of 

 the two wings unite, forming a complete tip. 



When the tenth feet are compared very little difference is 

 seen. The foot of the adult has cirri, branchiae, spines, and 

 bristles more strongly developed than those of the young 

 form ; but in both the brush-shaped bristles are almost 

 idoitical in size. The same applies to the feet in the poste- 

 rior regions of both young and adult. One young Nephthijs 

 ciliata was taken along with this species. 



* ' Monop^aph,' vol. ii. part ii. pi. Ixiii. figs. 7-7 </, pi. Ixv. fig-, 10, 

 pi. Ixxv. fig. 5, and pi. Ixxxiv. figs, y-3 c. 



