1887.] The Norw. North- Atlantic Exped. II 
the inner surface of the gullet-tube, between the epithelium and 
the musculous layer, a fine nervous reticulation is observed (Pl. II 
fig. 3 a) whose filaments extend themselves partly to the epithelium 
(Pl. II fig. 3 b), and partly to the musculous layer (Pl. II fig. 3 o, 
and over this reticulation lie scattered, large ganglia with large, 
round nuclei, enclosing round nucleus-corpuscles surrounded by a 
finely granular protoplasmic mass (Pl. II fig. 3 d). The ganglial 
cells have various forms, are more or less angular, and project se- 
veral prolongations which are very rich in protoplasmic contents. 
I have not been able to detect any connection between the gang- 
lial cells and the nervous reticulation, although it is sufficiently 
probable that such a connection exists. Farther down the intestine 
similar nervous distributions are seen, so that I am disposed to 
believe that the entire intestinal tube is well supplied with them. 
In a transverse section of the uppermost part of the gullet it ap- 
peared, to me, that upon its exterior side, inside of the epithelium 
and well covered by it, there lay a group of small, almost piri- 
form ganglia, which had a pretty large nncleus with nucleus- 
corpuscle; but as they were rather indistinct, and I did not succeed 
in obtaining from this part satisfactory macerated preparations, I 
must confine myself to indicating, that probably in that way a 
nervous distribution takes place to the septa and to the organs 
attached to them. 
Habitat. 
Stations No. 173 and 174. Several specimens; but only a few of 
them (2 adult and 1 young) were brought up undamaged. In 
most of them the integument was torn on the anterior part of 
the body, towards the oral disc, and through the rifts, thus 
produced, the mesenterial filaments, and partly also the repro- 
ductive organs, were forced out and lay quite exposed. 
Specific Characteristics. 
The body cylindrical, 70 m. m. in length, 15 m. m. in breadth 
at the anterior extremity, conically acuminated at the posterior 
extremity, which, latter, is furnished with 12 papillæ giving to the 
anus a stelliform appearance. 
The external surface of the body smooth, with 12 longitudinal 
furrows, and scattered suckers, which in the anterior part of the 
