22 Canon A. M. Norman — I^otes on the 



is very small (fig. 5). The antennae and mouth-organs are 

 simihir to those of D. longirostris. 



The first pair of thoracic feet (fig. 6) are moderately stout ; 

 the outer branches^ which are composed of three nearly equal 

 joints, are about as long as the first joint of the inner branches, 

 the spines on the outer m.argins are elongated and slender, 

 and the second joint bears a plumose seta on the inner distal 

 angle ; the length of the first joint of the inner branches is 

 equal to about twice the length of the second and third com- 

 bined, but the second joint is very small ; the armature of 

 the inner branches is similar to that of the same brandies in 

 typical specimens of D. longirostris. The next three pairs of 

 thoracic feet are somewhat similar to those of the typical 

 form, but the fifth pair seems to differ in one or two parti- 

 culars; the inner produced part of the basal joint in this pair 

 is broadly subcylindrical and the obliquely truncated apex is 

 furnished with five plumose setaj ; the two outermost setae 

 spring from the outer angle and are close together, but the 

 others are more widely apart ; the secondary joint is broadly 

 ovate and extends somewhat beyond the end of the basal 

 joint ; the armature of this joint consists of the same number 

 of setae as on the secondary joint of the same pair in D. longi- 

 rostris (fig. 7), The furcal joints (fig. 8) are very short. 



Hah. Vadso Sound ; rare. 



It will be observed that this form, while agreeing generally 

 with the typical D. longirostris, Claus, has the first pair of 

 ihoracic feet proportionally stouter and shorter, and the outer 

 branches are about as long as the first joint of the inner ones, 

 and the fifth pair are more broadly foliaceous ; but though 

 these differences are fairly well marked, they can scarcely be 

 considered of specific value. 



DactyJopus tenuiremis, Brady & Robertson. 



1875. Dactylopus ienuirevm, Brady & Kobertson, Brit. Assoc. Report, 

 p. 197. ' ^ ' 



This species occurred very sparingly in gatherings from 

 Bog Fiord, Lakse Fiord, and Vadso Sound. It has also been 

 collected in the Arctic seas by Mr. Bruce. 



(?) Dactylopus brevicornis, Claus. 



1866. Dactylopus brevicornis, Claus, Die frei lebenden Copepoden von 

 Isizza, p. 29, t. iii. i:gs. 20-25. 



One or two specimens apparently belonging to this small 

 species were collected in Bog Fiord and Vadso Sound. 



