of the Fishery Board for Scotland. 255 



two small lateral appendages. Anterior foot-jaw small, armed with a stout 

 curved terminal spine and two marginal setiferous lobes. Posterior foot- 

 jaw uncinate, forming a moderately strong prehensile organ, the terminal 

 claw slender and strongly curved. The inner branch of the first pair of 

 swimming feet elongate, two-jointed, the last joint small, the first nearly 

 twice the length of the three-jointed outer branch. A small seta springs 

 from the inner margin of the second basal joint, and another from the 

 inner margin and near the proximal end of the elongate first joint of the 

 inner branch. Two slender hairs, one of which is setiferous, spring from the 

 extremity of the last joint. Each of the three joints of the outer branch is 

 armed near the exterior distal angle with a short spinous seta ; three hairs 

 — two of which are long and setiferous and bent near the middle — spring 

 from the extremity of the last joint. The inner branches of the second, 

 third, and fourth pairs are one-jointed, that of the fourth rudimentary; 

 the outer branches are three-jointed, the joints subequal and more 

 strongly setiferous than those of the first pair. Fifth pair foliaceous, — the 

 same on the both sides, — one-branched, and furnished with three hairs on 

 the outer margin and four on the inner — the upper of the four being 

 densely setiferous. The extremity of each branch terminates in a stout 

 blunt-pointed spine nearly as long as the branch to which it appears to be 

 articulated. Abdomen four-jointed, the first segment composed of two 

 coalescent joints, and about twice the length of the next two together, the 

 second, third and fourth segments subequal. Caudal stylets fully half as 

 long as the last abdominal segment, slightly divergent, each stylet 

 furnished with a long geniculated terminal seta and several small 

 hairs. 



Male closely resembling the female but smaller ('87 mm). Anterior 

 antennae eight-jointed, the two first joints long, as in the female, the fifth 

 shorter than any of the other joints, and furnished with an olfactory ap- 

 pendage. The antennae are distinctly hinged between the sixth and seventh 

 joints, and indistinctly hinged between the third and fourth. The posterior 

 antennae, mouth-organs, and first pair of swimming feet as in the female, 

 The last joint of the outer branch of the second pair of swimming feet 

 like that of the female, but furnished with an additional and moderately 

 stout plumose hair, the normal position of which appears to be that shown 

 in the figure (fig. 12). A long spiniform appendage springs from the 

 basal joint of the third pair, and close to, but inside of, the one-jointed 

 inner branch (fig. 14). This appendage is more tlmn twice the length of 

 the inner branch, and as long as the two first jowftt of the outer branch. 

 The fifth pair of feet is furnished with fewer marginal hairs than those of 

 the female, and the terminal spine seems to be continuous with, and not 

 articulated to, the basal part of the foot. Abdomen five-jointed, caudal 

 stylets and setae as in the female. 



Laophonte horrida (Norman). 



1869-70. Gleta minuticornis, Buchholz, 'Die zweite deutsche Nord- 



polar-fahrt, 3 p. 393, pi. xv. fig. 3. 

 1876. Clef a horrida, Norman, 'Report of the Valorus Expedition,' 



p. 206 (Proc. Roy. Soc). 

 1880. Laophonte horrida, Brady, loc. cit., ii. p. 74, pi. xxiv. 



figs. 1-11. 



Habitat. — Washed from a large root of sea-weed brought up in the 

 trawl-net near the middle of the estuary between Fidra and St Monans 

 during February last (1892). This remarkable species is readily dis- 

 tinguished by the strong dorsal armature of the body segments. The 

 first pair of feet have the basal part long and rather slender. The rostrum 



