from the South-west Coast of Ireland. 383 



of papillse. Tlie latter wlien tliey cross the edge look like 

 teeth. The tips of the ventral arms being absent in the type, 

 it is not possible to say if the small suckers are present on 

 these arms also. The suckers on all the arms are placed 

 furthest apart on the proximal portion, gradually becoming 

 placed closer together and reaching their maximum size just 

 before the commencement of the distal third, where they are 

 abruptly succeeded by tlie tiny suckers. The large suckers 

 of the dorsal arms are smaller in proportion than those of the 

 other arms. The tentacles are long, slender, and round. 

 When bent back they extend rather more than three quarters 

 of the length of the mantle. The stem is thickest at its base, 

 whence it narrows gradually but considerably, again expanding 

 into a club furnished with moderate swimming-crest and 

 lateral membrane. The suckers of the club are in four rows, 

 of which the two median are perhaps slightly the largest. 

 About 60 suckers are present on each club, all with circular 

 horny ring, with about four rows of papillae. About 16 pairs 

 of minute suckers occur on the inner surface of the stem, 

 placed close together near the club, becoming gradually 

 more distant. Apparently none are modified into fixing-pads. 

 There are none on the proximal portion of the stem, which 

 is quite smooth in the type for the last 10 mm. Organ of 

 siphon consisting of two quadrangular folds on sides and a 

 median dorsal organ ; the latter is composed of a thin 

 plate occupied by an anterior and two lateral tubercles. 

 From the anterior tubercle on pressure a needle-like process 

 appeared, in the type extending a length of 1 mm. Similar 

 processes claw-like in shape are situated in each of the 

 lateral tubercles. The specimen was taken in the trawl at 

 350 fath. 



Dimensions. 



mm. 



Total length 80 



End of body to mantle-margiu dorsally .... 89 



„ „ top of eye 41 



Breadth of body 18 



„ head between eyes 3 



„ „ across eyes 10 



Length of fin 7 



IJieadtli of fin 7 



„ (diameter) of peduncle of fin 2 



Length of arms : — 



1st on right 11 mm. 1st on left IT 



L>nd „ 13 „ 2ud „ 1:; 



3vd „ 14 „ 3rd „ 11 



4tlj „ D „ 4th „ 8 



Length of tcntuclo 37 



