370 







Remarks. The present form is closely allied to M. forficula (Glaus), an 

 indeed I have long been in doubt about its real specific difference. Having how- 

 ever met with this form in many different localities and always found the above 

 mentioned characteristic difference in the structure of the last pair of legs per- 

 fectly constant, I prefer to describe it here as a new species. The forms recorded 

 by Boeck as Thalestris Jcarmensis and by Th. Scott as T. forficuloides, belong both 

 to the type species, as proved by the structure of the last pair of legs. 



Occurrence. I have met with this form in many places, both of the south 

 and west coasts of Norway and northwards to the Trondhjem Fjord (Bejan). It 

 is a pronouncedly littoral form, being only found in the uppermost part of the 

 littoral zone, and very often in shallow pools left by the tide. 



Page 128. 

 Dactylopusia vulgaris, G. 0. Sars. 



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



Page 129. 

 Dactylopusia micronyx, G. 0. Sars. 



Remarks. This form seems to be the same as that recorded by Messrs. 

 Normann and Scott as D. valida. I do not however know, which of these 2 

 names should be retained for the species, as they were proposed about simul- 

 tanously. 



Page 131. 

 Add the following species: 



Daetylopusia latipes, Boeck. 



(Suppl, PI. 11, fig. 2). 

 Dactylopits latipes, Boeck, Oversigt over de ved Norges Kyster iagttagne Copepoder. Chr. Vic 



Selsk. Forhandl. f. 1864, p. 270. 

 Syn. Dactylopus brevicornis, Scott (not Clans). 



Specific Characters. Female. Body very robust, with the anterior division 

 considerably dilated and of rounded oval form. Urosome much narrower and 

 about half the length of the anterior division. Caudal rami very short, being 

 nearly twice as broad as they are "long; innermost but one of the apical setse 

 exhibiting at the base inside a very conspicuous dilatation. Anterior antennae 

 short and thick, consisting, as in D. Irevicornis, of 5 joints only, with a slight 



