261 



Mule with the 2nd pair of legs of exactly the same structure as in female. 

 3rd pair of legs with the inner ramus transformed in the usual manner, spiniform 

 projection of middle joint sigmoid, terminal joint comparatively short, and pro- 

 vided with only 3 setse. Last pair of legs much smaller than in female, distal joint 

 gradually widening towards the end, and provided with 5 setae. 



Colour not yet ascertained. 



Length of adult female 0.48 mm. 



Remarks. The present species is easily distinguishable from any of the 

 4 preceding ones, both as regards its external appearance and the structure of 

 some of the appendages, especially that of the last pair of legs. It is one of 

 the smallest species known. 



Occurrence. Some few specimens of this distinct form were found in a 

 sample taken by Mr. Nordgaard in the Salten Fjord, north of the Arctic Circle, 

 and kindly sent to me for examination. I have much pleasure in naming it in 

 honour of that distinguished naturalist, to whom I am indebted for the examination 

 of this and many other interesting species of Copepoda. 



172. Laophonte parvula, G. 0. Sars, n. sp. 



(PI. CLXXXI). 



Specific Characters. Female. Body rather short and stout, gradually 

 tapering behind, with the segments sharply marked off from each other. Rostral 

 projection of moderate size and obtusely pointed at the tip. Urosome almost as 

 long as the anterior division, lateral expansions of the segments not very pro- 

 minent. Caudal rami short, only slightly longer than they are broad, and scarcely 

 at all divergent, apical setae of moderate length. Anterior -antennae distinctly 

 7-articulate, 2nd joint produced behind to a triangular projection. Posterior an- 

 tennas with the outer ramus normally developed. Posterior maxillipeds not very 

 strong. 1st pair of legs with the outer ramus distinctly 3-articulate, and exceeding 

 half the length of the proximal joint of the inner. Natatory legs of normal struc- 

 ture. Last pair of legs with the distal joint narrow oblong in form, and provided 

 with 7 marginal setae, the 2 proximal ones of the outer edge closely juxtaposed, 

 one of the apical setae very slender; inner expansion of proximal joint triangular, 

 and extending somewhat beyond the middle of the distal joint, marginal setae 5 

 in number, all of nearly equal length. Ovisac of moderate size, rounded oval 

 in form. 



Male unknown. 



