397 



Occurrence. Only a solitary specimen of this form, a fully grown ovigerous 

 female, has hitherto come under my notice. It was found in the same sample 

 as the last-named species. 



Page 217. 



For Ameira tenuicornis, Scott, 

 read : Ameira Scotti, G. 0. Sars, n. sp. 



Remarks. Having now examined the true Ameira tenuicornis of Scott, 

 which will be described below, I propose to name the present species as above. 



Page 218. 

 Ameira tau, (Giesbrecht). 



Distribution. Polar Islands north of Grinnell Land (2nd Fram Exp.). 



Page 220. 



For Ameira tenella, G. 0. Sars, 

 read: Ameira attenuata, Thomps. 



Ameira attenuata, I. C. Thompson, Revised Report on the Copepoda of Liverpool Buy. Trans. 

 Liv. Biol. Soc.. Vol. VII, p. 195, PI. XXXIf. 



Remarks. I think I am right in identifying the form described in the 

 present account on page 220 as Ameira tenella with A. attenuata of I. Thompson. 

 The figures given by that author are certainly far from being accurate, but there 

 are so many points of agreement that, on a closer comparison, I am led to the 

 conclusion that these 2 forms are in all probability identical. 



Page 221. 

 Add the following species: 



Ameira tenuicornis, Scott. 



(Suppl. PI. 27). 



Ameira tenuicornis, Th. Scott, in 20th Ann. Report of the Fishery Board for Scotland, Part III, 



p. 549, PI. XXIV, figs. 19. 



Specific Characters. Female. Body extremely slender and narrow, sub- 

 linear in form, with the anterior division only slightly broader than the posterior, 

 the two being of about equal length. Rostral prominence very small. Last caudal 

 segment a little shorter than the preceding one. Caudal rami shorter than the 

 anal segment and only slightly longer than they are broad, apical setae however 

 of quite unusual length, the inner medial one being even longer than the whole 



53 Crustacea. 



