129 



Colour dark yellow changing to olivaceous brown. 



Length of adult female 0.70 mm. 



Remarks. This form has been identified by Glaus with' the Canthocamptus 

 Stromi of Baird, and all subsequent authors have followed Glaus in this view. 

 In my opinion, however, such an identification cannot properly be maintained, as 

 the figures given by Baird clearly show his form to be not a Dactylopusia but 

 without doubt a Laophonte, and in all probability the species recorded by Boeck 

 as Laophonte curticauda. I have therefore found it necessary to give the present 

 form a new specific name, and to transfer that proposed by Baird to the above- 

 named species of Laophonte. The form here in question is nearly related to the 

 2 preceding species, though easily distinguishable by its much shorter and stouter 

 body, as also by the structure of the last pair of legs in the female. 



Occurrence. This is by far the most common .of our Dactylopusise and 

 perhaps one of the commonest Harpacticoida, occurring along the whole Norwegian 

 coast, everywhere in the littoral region among algae, and often also found abun- 

 dantly in tidal pools. 



Distribution. Heligoland (Glaus), coast of Bohuslan (coll. Cleve), British 

 Isles (Brady), coast of France (Canu). 



82. Dactylopusia micronyx, G. 0. Sars, n. sp. 



(PI. LXXIX. fig. 2). 



Specific Characters. Female. Body resembling in its general form that 

 of D. vulgaris, though somewhat more slender and more tapered behind. Anterior 

 antennae very small, 9-articulate, penultimate and antepenultimate joints less di- 

 stinctly defined. 1st pair of legs with the outer ramus short and stout, scarcely 

 exceeding half the length of the inner, terminal joint lamellar, with the 2 outer- 

 most claws extremely small; apical claws of inner ramus very unequal, the inner 

 one much elongated, 3 times as long as the outer. Last pair of legs with the 

 distal joint comparatively smaller than in D. vulgaris and of a more regular oval 

 form, marginal setae 7 in number, 2 of them issuing from the inner edge; inner 

 expansion of proximal joint large, triangular, extending as far as the distal joint, 

 none of the joints with chitinous stripes inside the edge. 



Male with the inner ramus of 2nd pair of legs similar to that in D. vul- 

 garis, but having the apical spines more elongated and rather unequal, the outer 

 one slender, setiform, the inner very strong and somewhat lamellar at the tip. 



