59 



more slender than in Z. .yinatus, spines outside the last 2 joints of the outer 

 ramus provided, as in that species, with a dense brush of cilia on one of the 

 edges. Last pair of legs differing conspicuously in form from those in the other 

 known species, 'distal joint rather large and somewhat lozenge-shaped, outer margin 

 convex, inner straight, apex narrowly produced, both edges densely ciliated; 

 proximal joint constricted in the middle, with the posterior edge deeply concaved 

 and quite smooth between the marginal setse, 2 of which, attached close to the 

 extremity, are considerably elongated. 



Body of a light yellow colour, with a dark orange transverse band across 

 the back, occupying the dorsal parts of the 2 anterior free segments of metasome; 

 urosome more or less deeply tinged with the same colour. 



Length of adult female 0.62 mm. 



HemarJcs. This form may be easily distinguished both from Z. spinatus 

 and Z. Aurelii by its short, broad, shield-like body, and by the characteristic 

 form of the last pair of legs. It is very strange that this distinct species, which 

 most probably also occurs off the Scottish coast, has quite escaped the attention 

 of that diligent observer, Th. Scott. It has perhaps been confounded by him with 

 Z. spinatus. 



Occurrence. The present species is by no means rare off the west coast 

 of Norway. It is however never found close to the shore, like Z. spinatus, but 

 seems to be restricted to the region of the red algse, where it often occurs in 

 considerable numbers. 



Distribution. Polar islands north of Grinnell Land (2nd Fram Expediton). 



37. Zaus Goodsiri, Brady. 



(PI. XXXV). 

 Zaus Goodsiri, Brady, Monograph of British Copepoda, Vol. II, p. 156, PI. LXVt, figs. 10 13. 



Syn : Zaus ovalis, Claus (not Goodsir). 



Specific Characters. Female. Body oblong in form and much depressed, 

 with the integuments very much incrusted. Cephalic segment large and broadly 

 rounded in front, rostrum broad, lamellar. Epimeral plates of the 3 succeeding 

 segments tongue-shaped, with a nodiform projection at the base anteriorly. Last 

 segment of metasome comparatively larger than in the 2 preceding species, though 

 much narrower than the other segments. Urosome equal in length to about 2 /s 

 of the anterior division, genital segment rather large and, like the succeeding 

 segment, produced at the postero-lateral corners to conical projections finely cili- 



