37 



22. Ectinosoma gothiceps, Giesbrecht. 



(PL XX, fig. 2). 



Ectinosoma gothiceps, Giesbrecht, Die freilebenden Copepoden der Kieler Fohrde, p. 106, PI. I, 



figs. 3, 12; PI. IV, figs. 17, 35; PI. V, fig. 3; PI. VII, fig. 8; PI. VIII, figs. 10, 11; PI. IX, fig. 17; 



PL X, figs. 10, 21; PI. XI, fig. 13; PL XII, figs. 6, 10. 



Syn? Ectinosoma pygmoeum, Scott. 



Specific Characters. Female. Very like the preceding species, but of 

 much smaller size and somewhat less slender. Cephalic segment, seen dorsally, 

 evenl} 7 contracted in front, rostral plate of moderate size and obtusely acuminate 

 at the tip. Caudal rami very short, not nearly so long as they are broad. An- 

 terior antennse short, 6-articulate, resembling those in E. curticorne, but without 

 any pigmentary patch inside the 1st joint. Anterior lip with a short acute pro- 

 jection in front. Last pair of legs comparatively smaller than in E. curticorne, 

 but with the marginal spines very long and considerably thickened at the base; 

 distal joint shorter and less unequally trilobate than in the above species, outermost 

 apical spine considerably longer than the innermost; inner expansion of proximal 

 joint very short. 



Colour whitish gray. 



Length of adult female 0.45 mm. 



Remarks. The above-described form is unquestionably that recorded by 

 Dr. Giesbrecht as E. gothiceps, and I am also of opinion that the E. pygmceum 

 of Scott is referable to the same species. It is closely allied to E. curticorne, 

 but of much inferior size, and is moreover distinguished by the short caudal rami, 

 the absence of the pigmentary patch on the anterior antennae, and also by the 

 somewhat different structure of the anterior lip and the last pair of legs. 



Occurrence. I have met with (his small species occasionally in several 

 places both on the south and west coasts of Norway, as also in the Trondhjem 

 Fjord, in moderate depths. 



Distribution. Kiel Bay (Giesbrecht), Firth of Forth, Isle of Man (Scott). 



23. Ectinosoma mixtum, G. 0. Sars, n. sp. 



(PL XXI, fig. 1). 



Specific Characters. Female. Body moderately slender, with the cephalic 

 segment, seen dorsally, gradually contracted in front, rostral plate well developed 

 and somewhat deflexed, narrowly rounded at the tip. Caudal rami about as long 



