16 



Colour whitish grey, with a slight yellow tinge. 



Length of adult female about 0.80 mm. 



Remarks. This is a very distinct species, easily recognisable both by 

 the general form of the body and by the structure of some of the appendages. 



Occurrence. The only place where I have observed this species, is at 

 Farsund, south coast of Norway. It occurred here occasionally together with 

 C. longicornis in a depth of about 20 fathoms, sandy bottom. 



Distribution. Firth of Forth (Scott), Gulf of Naples (Giesbrecht). 



Gen. 3 CyClOpmella, G. O. Sars, n. 



Generic Characters. General appearance resembling that in the genus 

 Cyclopina, the anterior division of the body being considerably dilated, the posterior 

 narrow and attenuated. Head defined from the 1st pedigerous segment by a 

 well-marked suture. Anterior antennae comparatively short and composed of a 

 limited number of articulations. Posterior antennae with the first joint simple and 

 quite smooth. Mandibles short and stout, with the palp less fully developed than 

 in Cyclopina, being simple, without any outer ramus. Maxilla} likewise rather 

 short, palp with the 2 outer appendages well developed and of about equal size, 

 one of the apical spines, as also those of the masticatory lobe, unusually thick, 

 almost digitiform. Anterior maxillipeds rather compact, with the claw of the 

 2nd basal joint scarcely different from the spines of the terminal part. Posterior 

 maxillipeds much smaller, and of the usual structure. Natatory legs well developed 

 differing somewhat in structure from those in Cyclopina. Last pair of legs less 

 rudimentary than usual, being distinctly 3-articulate, with the terminal joint 

 comparatively large and armed with strong lanceolate spines. 



Remar~ks. This new genus is somewhat allied to Cyclopina, though dis- 

 tinguished by certain apparently fundamental differences, of which may be named 

 the distinct separation of the head from the 1st pedigerous segment, and the 

 simple structure of the mandibular palp. Only a single species of this genus 

 has hitherto come under my notice. 



7. Cyelopinella tumidula, G. 0. Sars, n. sp. 



(PI. VIII). 



Specific Characters. Female. Body comparatively short, with the anterior 

 division greatly tumefied and almost pyriform in shape, the greatest width occurring 



