of the Fishery Board for Scotland. 247 



somewhat robust, and bears a short plumose seta near the middle of the 

 upper margin. A small secondary joint, furnished with two marginal and 

 two terminal plumose hairs, springs from the middle of the joint nearly 

 opposite the marginal seta. The second joint is about equal in length to 

 the first, but considerably narrower (fig. 16). The mandible-palp is small, 

 narrow, one-jointed, and furnished with a few short plumose hairs (fig. 

 17). In the posterior foot-jaws the first joint is narrow ; the second is 

 considerably dilated, and furnished with a strong hooked claw, scarcely 

 equal in length to the joint from which it springs. The inner branches 

 of the first pair of swimming-feet are elongate and rather slender. The 

 second joint is proportionally much longer than it is in several described 

 species of Laophonte, being equal to fully one-third of the length of the 

 first joint. Terminal claw slender, and only slightly curved. The outer 

 branches, which consist of three sub-equal joints, are equal to about half 

 the length of the first joint of the inner branches (fig. 19). The inner 

 two-jointed branches of the fourth pair extend slightly beyond the end 

 of the second joint of the outer branches (fig. 20). The inner portion of 

 the basal joints of the fifth pair is produced into a sub-cylindrical lobe, 

 obliquely rounded at the end, and provided with four plumose setae 

 arranged at nearly equal distances round the lower half and end of the 

 inner edge. The secondary joints are small and cyclindrical in form, and 

 furnished with five setae on the irregular edge of the truncate apex (fig. 

 21). Caudal stylets narrow, and rather longer than the last abdominal 

 segment. 



Male. — The tooth on the under side of the second joint of the male 

 anterior antennae is scarcely so large as in the female. The terminal joints 

 are modified somewhat like those of the male of Laophonte depressa (fig. 

 15). The inner branches of the third pair of thoracic feet are very short, 

 and provided with a strong irregularly-curved spiniform appendage (fig. 

 21). The inner portion of the basal joints of the fifth pair are not pro- 

 duced, but are slightly bilobed, each lobe bearing a single apical seta. 

 The secondary joints are somewhat similar to those of the female, but 

 rather narrower (fig. 23). The sixth appendage is very small, and 

 furnished with two short hairs. 



Habitat. — Off St Monans. Rare. 



Remarks. — The slender form of this species, considered in connection 

 with the armature of the anterior antennae, is alone sufficient to enable it 

 to be distinguished from others of the same genus. It is unlike any other 

 Laophonte known to me, except, perhaps, Laophonte serrata (Claus). 



Laophonte littorale, T. and A. Scott. 



1893. Laophonte littorale, T. and A. Scott, p. 238, pi. xi. figs. 

 7-14. 



Description. — Female. Length, -85 mm. (^th of an inch). Body 

 elongate, sub-cylindrical. Forehead very slightly produced into a bluntly 

 rounded rostrum Anterior antennae sparingly setiferous, and composed 

 of seven joints ; the third joint is longer and the fifth shorter than any of 

 the others. The proportional lengths of all the joints are shown by the 

 formula : — 



9 ' 10 • 12 * 5 ' 3 • 6 • 8 ' 



5-6-7 



Secondary branch of posterior antennae rudimentary, and consisting of 

 one small joint bearing a small apical seta. Mouth organs nearly as in 

 Laophonte curticauda, Boeck. Inner branches of the first thoracic feet 

 moderately stout. The second joint is scarcely equal to one-fourth of the 

 length of the first, and the terminal claw is stout and hooked at the apex. 



