ROI'ODA 



he length of the lateral teeth 0*26 (the oldest onlj measured 

 ■ 1 ngtie wi series "I tooth-plates, and in the radula sheath 



1 which '. full) developed; thus the whole numb ries was 23. The median 



"ii either side of the only slight!) projecting point. The lateral 

 denticles on one edge (fig, 

 The oesophagus was of the same length as the bulbus pharyngeus. 



I .1111 ii"t able t" decide whether this form is new, or is to 1"- referred to »hl- of thi 



Coryphella sp. 



PI. IV, Kg. 20; \', figs. 1 1 13. 



•.hi-- form one specimen was taken on Isafjord on the 7 of June 1895, and preserved in 

 ill ohol. 



This individual was 9"" long, by a breadth of 2-~, r:m and a height of 3"" ; tin- length of the 

 rhinophores and the tentacles was v$ mm , of tin.- dorsal papillae rs""'; tin- breadth of the fore end of 

 tin- foot witli its corners projecting in a fingerlike manner, was 2-25""". — The colour was now only 

 whitish with remnants of a dark brown pigment, especially on the hack and sides. 



The form was as in other Coryphellae. The head was large; the papillae (which had for a 

 irt fallen off) appeared to be gathered into four groups that onlj seemed to contain few series, 

 and few papillae in each series. The anal opening was at the hind end of the second group of papillae, 

 in the d Ige. 



The bulbus pharyngeus was 2" long, of the common form; the secondary mouth cavities 



were rather large, their hind wall black-brown, their opening wide. The mandibles were yellowish, 



with a darker hinge-part, the masticatory edge had a series of (about .|< .) denticles mostly truncate 



111. and inside of these several irregular series of low tubercles (fig. 1 1 ). The tongue was of the 



in, with 5 series of tooth-plates, further back 9 series were found, two of which were not 



I; thus the total number of series was i.j. The median tooth-plates were yellow, the 



almost colourless. The length of the median plates was o-20 mn ', by a breadth of o-iO m m , 



: the length of the lateral ones was almost o-i4 m '". The median tooth-plates 



in "i tlu common form, with 5 — 6 powerful denticles on each side of the short, 



•tie bent point. The lateral tooth-plates (figs. 12 b; 20b) had the common form, with a less deep 



h in the fore end, and commonly with 12 13 dentil 



Thi ireely to be identical with the preceding one, the lateral teeth 



at for tli 



