81 



Mandibles considerably stronger than in the type species, with the palp well 

 defined, conical in form, and provided at the tip with 2 unequal setae. Maxillae 

 and posterior maxillipeds nearly as in B. Love'ni. Anterior maxillipeds, however, 

 somewhat different, being comparatively more powerfully developed, with only 

 a single bispinose lobe inside, and the terminal part undivided, claw-like, 

 carrying outside, about in the middle, a bundle of 3 curved setae. Legs on 

 the whole less robust than in the type species, with the rami narrower and 

 the spines on both of them uniseriate and much more slender, nearly setiform, 

 2 of them attached outside the terminal joint of the outer ramus; 4th pair 

 smaller than the preceding ones, and having the number of spines consider- 

 ably reduced. Last pair of legs about as in B. Loveni, but with the apical 

 spines more slender. 



Colour of the living animal not yet ascertained. 



Length of adult female scarcely exceeding 0.70 mm. 



Male unknown. 



Remarks. The above-described form is unquestionably referable to the 

 genus Biiprorus of Thorell, but differs from the type species decidedly both 

 as regards the general shape of the body and in the structure of some of the 

 appendages, as indicated in the above diagnosis. It is also of much inferior size. 



Occurrence. 2 female specimens of this form, the one with the incubatory 

 cavity filled with embryos in the last (Nauplian) stage, were found in a small 

 compound Ascidian (Amoroecium) taken by Mr. O. Nordgaard in the Trondhjem 

 Fjord and kindly sent to me for examination together with other kinds of 

 Ascidians. The species is named in honour of that distinguished naturalist, 

 who also otherwise has assisted me in my investigation of the Norwegian 

 Copepoda. 



Fam. Anomopsyllidae. 



Gen. Anomopsyllus, G. O. Sars, n. 



Generic Characters. Body (of female) divided into 3 sharply defined 

 sections: head, trunk and tail. Head comparatively small, triangular in form. 

 Trunk rather tumid and without any distinct segmentation. Tail comparatively 

 short and much narrower than the trunk, terminating in 2 diverging caudal 



