12s 



/' marks. This form was considered by Prof. Brady as only a variety 

 of J>. ////>//-/'/'-. It is. however, certainly specifically distinct, as is clearly 

 proved, both by tbe distinctly 9-articulate anterior antenna. 1 and by the rather 

 different structure of tbe last pair of legs. Moreover, tbe inner transformed 

 raiuus of tbe -Mid pair of legs in tbe male exhibits characteristic differences from 

 that in the male of 1). fltis/in'/ili-*. 



( )rriii'i'i nc>'. I have hitherto only observed this form in a single locality, 

 viz. in the immediate vicinity of Trondhjem, where some few specimens were taken 

 from tidal pools. 



ion. British Isles (Brady). 



81. Dactylopusia vulgaris, G. 0. Sars (ne\\- name). 



(PI. LXXIX, tig. 1). 



Drtr////oy/).s >'//.'./;. Clans. Die freilebenden Copepoden, p. 12H, PI. XVI, figs. 1 6 (not = Can- 



thocamptus Strihni, Bainl). 



c Characters. Female. Body considerably shorter and stouter than 

 in the 2 preceding species, and conspicuously depressed throughout. Cephalic 

 segment fully as long as the 4 succeeding ones combined; rostrum well developed 

 and somewhat curved. Urosome scarcely exceeding half the length of tbe anterior 

 division, all the segments fringed at the hind edge ventrally with delicate spinules, 

 genital segment scarcely broader in front than behind. Caudal rami about as in 

 I), nri/ln-fit. Anterior antennae of moderate length and distinctly 9-articulate, 

 distal part about the length of the 3 preceding joints combined. 1st pair of legs 

 resembling in structure those in D. tuylrrtn. though having the apical claws of 

 both rami somewhat stronger and distinctly denticulated. Last pair of legs with 

 the distal joint broadly ovate or cordate in form, tip narrowly exserted and ear- 

 ning -1 unequal bristles, outer edge with 3 subeqiial seta 1 , inner one with a single 

 souie\\bat stronger seta; inner expansion of proximal joint rather large, though 

 !'-> broad than in It. llii*hi>i<lc*. and extending about as far as the distal joint, 

 both joinN exhibiting inside the inner edge a row of short transverse chitiiious 

 strip 



Mnl<- with the inner raiuus of i_'nd pair of legs resembling in shape that 

 in />. a- i/li-rtii. apical spines, however, less strong, and spine of outer edge at- 

 tached to about the middle of the distal joint. Last pair of legs with the distal 

 joint much shorter than in female and provided with an additional seta inside. 

 inner expansion of proximal joint extending as far as the distal joint and car- 

 rying .'5 marginal seta 1 . 





