138 



Occurrence. I have met with this form occasionally in several localities 

 both on the south and west coasts of Norway, from the Christiania Fjord up to 

 the Trondhjem Fjord. It is not, like Zaus sp'matus, a strictly littoral species, but 

 only occurs in moderate depths ranging from 6 to 20 fathoms. 



Distribution. British Isles (Brady), coast of Bohuslan (coll. Cleve). 



87. Amenophia pulchella, G. 0. Sars, n. sp. 



(PI. LXXXIV, fig. 2). 



Specific Characters. Female. Body comparatively shorter and stouter 

 than in the preceding species, rounded oval in outline, with the greatest width 

 considerably exceeding half the length, and occurring about in the middle. Ce- 

 phalic segment very large and only slightly constricted in front. Epimeral plates 

 of the 3 succeeding segments closely imbricate and greatly exstant laterally. 

 Urosome comparatively short and broad, scarcely half as long as the anterior 

 division, the first 3 segments considerably produced at the lateral corners, and 

 densely fimbriate at the edges. Caudal rami about as in A. peltata. Anterior 

 antennae somewhat more attenuated distally, terminal part very slender. Posterior 

 antennae and oral parts scarcely different from those in A. peltata. 1st pair of 

 legs likewise of a very similar structure, differing, however, in the somewhat 

 greater length of the inner ramus as compared with the outer, and having the 

 seta of the 1st joint attached beyond the middle. Last pair of legs with the 

 terminal joint of the same structure as in A. peltata; inner expansion of proximal 

 joint however slightly different, being narrowly produced in the middle. 



Body of a clear yellowish colour, with a bright pink band across the 

 middle, occupying the whole of the first 3 free segments of metasome, and bor- 

 dered in front by a light orange shade. 



Length of adult female 0.50 mm. 



Remarks. This new species is closely allied to A. peltata, but is of smaller 

 size and considerably more robust form of body, differing also slightly in the 

 structure of the 1st and last pairs of legs. In the living state, it is moreover 

 at once distinguished by its peculiar and beautiful colour. 



Occurrence. Some few specimens of this form, all of the female sex, 

 were taken many years ago at Christiansund, on the west coast of Norway. 





