122 



DISCOVERY REPORTS 



is a pair of brown eyes. The neck is wide and short. The first chaetigerous appendage 

 is absent and the second may be almost as long as the body. 



From the fourth foot backwards there is a chromophil gland in the ventral pinnule 

 lying just beyond the apex of the ventral trunk. This gland is very variable in size, and 

 may occupy the whole distance from the tip of the trunk to the end of the pinnule, or it 

 may be a comparatively small structure lying just inside the border of the pinnule. 

 There is a small and often indistinct hyaline gland lying above and behind the chromo- 

 phil gland. The ventral surface of the neuropodial pinnule is furnished with numerous, 

 fine, parallel tubules which appear to open at the ventral border of the pinnule. These 

 tubules stain very readily, and constitute a diiTuse extension of the chromophil gland. 

 The gonad lies in the dorsal ramus of the foot. 



Remarks. This is an eurythermic species inhabiting the cold and temperate waters 



of both hemispheres. 



Family TYPHLOSCOLECIDAE 



A large lobe above the brain (caruncle) Travisiopsis 



Cerebrallobe indistinct Sagitella 



Genus Sagitella, Wagner 



Body cylindrical. Prostomium conical ending in a palpode. A lobe above the brain 



and paired nuchal organs. No vibratile cushions. The first three segments have each a 



single pair of foliaceous cirri, and the remaining segments have dorsal and ventral cirri. 



Bristles absent from the first few segments. The body ends in a pair of foliaceous anal 



cirri. 



Sagitella lobifera, Ehlers (Fig. i6 a, b). 



Ehlers, 1912, p. 24, pi. iii, figs. 1-4. 



Monro, 1930, p. 90. 

 Occurrence. St. 395 (11); 590 (3). 



Specific characters. Between 25 and 30 mm. in length by 3 mm. in breadth for 22 

 cirrigerous segments. The colour in spirit is pale yellow or pale green. In life it is deep 

 scarlet. The head is a sharply 

 tapering cone and ends in a fili- 

 form palpode (Fig. 160). There 

 is a foliaceous cirrus on each side 

 of the head and the following 

 two segments have each only a 

 single pair of cirri. As regards 

 the nuchal organs, there is in the 

 median line a single backwardly- 

 directed tongue-shaped process, 

 at the sides of which is a pair of 

 backwardly-directed pinnate lobes 

 about as long as the head. These 

 pinnate lobes have up to five to six branches on each side of the main stem. Actually 



•5MM 



« h 



Fig. 16. Sagitella lobifera. 

 a. Head from above, cirri not shown. b. Anal cirri. 



