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composed of 7 well-defined articulations, the 2nd of which is produced behind to 

 a strong conical projection. Posterior antennae and oral parts nearly as in L. 

 cornuta. 1st pair of legs comparatively more slender, with the outer ramus dis- 

 stinctly 3-articulate and exceeding half the length of the 1st joint of the inner, 

 apical claw of the latter ramus rather elongated, being fully 3 times as long as 

 the distal joint. Natatory legs resembling in structure those in L. cornuta, yet 

 differing in the absence of any seta inside the proximal joint of the inner ramus. 

 Last pair of legs much smaller than in the type species, distal joint narrow fusi- 

 form in outline, inner expansion of proximal joint triangular in form and scarcely 

 extending to the middle of the distal joint, number of marginal setae in both 

 joints as in L. cornuta. 



Male exhibiting the usual sexual differences from the female. Inner ramus 

 of 3rd pair of legs with the projection of the middle joint peculiarly transformed, 

 being converted to a sigmoid lamella with 2 knob-like prominences of the outer 

 edge and partly cowering the last setiferous joint. Last pair of legs with the 

 distal joint narrow linear in form and carrying 5 setae, one of which, attached 

 to the inner edge, is rather strong, spiniform; inner expansion of proximal joint 

 almost obsolete, with 2 unequal seta3. 



Colour yellowish, tinged with light red or orange. 



Length of adult female 0.76 mm. 



Remarks. This is unquestionably the species originally described by Glaus 

 under the name of Cleta serrata, as clearly shown by the figures he gives of the 

 1st and last pairs of legs. The form recorded by Th. Scott as Laophonte pro- 

 pinqva is identical with Claus's species. It is well distinguished from L. cornuta 

 by the distinctly 7-articulate anterior antennae, the 3-articulate outer ramus of the 

 1st pair of legs and the rather different shape of the last pair of legs. Moreover 

 the anal opercle wants the erect spine found in L. cornuta, and the caudal rami 

 carry each at the tip 2 normally developed setae instead of a single such. 



Occurrence. I have met with this species not unfrequently in many places 

 both of the south and west coasts of Norway, as also in the Trondhjem Fjord, 

 in moderate depths, among algae. Male specimens appear to be equally frequent 

 as female ones. 



Distribution. Heligoland (Glaus), Scottish coast (Scott), coast of France 

 (Canu). 



