263 



Colour of female pale yellow, with dark green ovaria. 



Length of adult female 0.42 mm. 



Iti'iiiark*. This is perhaps the smallest of all the known species of the 

 present genus, and is moreover easily recognised by its short pyriform body, as 

 also by the structure of some of the appendages in both sexes. 



Occiirrence. I have only met with this form in the upper part of the 

 Christiania Fjord. It occurred there occasionally on a muddy bottom in shallow 

 bays near the town. 



174. Laophonte inopinata, Scott. 



(PI. CLXXXIII). 



Laophonte inopinata, Th. Scott, Additions to the Fauna of the Firth of Forth. Tenth Annual 

 Report of the Fishery Board for Scotland, Part III, p. 256, PI. XT, figs. 112. 



Specific Characters. Female. Body slender, sub-cylindric in form, with 

 the segments sharply marked off from each other, and clothed at the hind edge 

 with scattered spinules with a dense fringe of small denticles between them. 

 Rostral projection triangular. Urosome much shorter than the anterior division, 

 and having the lateral expansions of the segments well defined and densely hairy; 

 last segment exceeding in length the preceding one. Caudal rami comparatively 

 short and of uniform width throughout, somewhat divergent and clothed both at 

 the edges and on the upper face with short hairs; middle apical seta much elon- 

 gated, exceeding half the length of the body, and having its distal part densely 

 clothed with woolly cilia, tip naked and turned up in a hamiform manner. 

 Anterior antenna? composed of only 6 articulations, the last 2 being confluent, 

 2nd joint simple and exceeding in length the 3rd. Posterior antenna? rather strong, 

 with the outer ramus normally developed. 1st pair of legs not much elongated, 

 outer ramus biarticulate, and scarcely half as long as the proximal joint of the 

 inner. Natatory legs poorly developed, with the setae much reduced both in size 

 and number, inner ramus in the 2 anterior pairs biarticulate, in 4th pair quite 

 rudimentary, uniarticulate. Last pair of legs well developed, distal joint somewhat 

 fusiform in outline, and provided with 5 setae arising from digitiform projections 

 of the edge; inner expansion of proximal joint short and broad, not nearly ex- 

 tending to the middle of the distal joint, marginal seta? 4 in number, the outer- 

 most but one much the longest. Ovisac small, rounded. 



Male not examined. 



Colour light yellow. 



Length of adult female 0.55 mm. 



