of the Fishery Board for Scotland. 249 



branches consist of one and the outer of two joints, as shown in the figure 

 (fig. 29, PI. VII.). The inner portion of the basal joint of the fifth pair 

 is not developed, but looks like a flattened border to the thoracic segment 

 to which it is attached. It is furnished with three marginal setae ; the 

 outer portion projects outwards in the form of an elongate narrow process 

 carrying a slender apical seta. The secondary joint has an obovate form, 

 and is provided with five setae of variable lengths round the distal end . 

 (fig. 30, PI. VII.). Caudal stylets short, with a considerable space 

 between them. The thoracic and abdominal segments are all fringed 

 more or less with cilia. 



Habitat. — Off West Wemyss, Firth of Forth. Rare. 



Remarks. — This small and very curious species was discovered within 

 the valves of a dead Cyprina shell, accidentally picked out from among 

 some trawl refuse. It seems to combine the form of one of the depressed 

 Dactylopus with the anatomical characters of Laophonte. It differs, how- 

 ever, from the typical Laophonte in the structure of the third pair of 

 swimming-feet, which in this species have the inner branches one and 

 the outer branches two jointed. It also carries two ovisacs, which is 

 very unusual among the Laophonte. It nevertheless agrees in so many 

 particulars with the characters of that genus, that I propose, for the 

 present at least, to place it among the Laophonte. Laophonte simulans is, 

 so far, one of the smallest of the Forth species. belonging to this genus. 



Sub-genus Laophontodes, nov. sub-gen. 



Like Laophonte, Philippi, except that the posterior antennae have no 

 secondary branch, and the fifth pair of thoracic feet are one-jointed. In 

 the second, third, and fourth pairs of thoracic feet the second basal joints 

 are elongate, and the outer branches are articulated to the apex, and the 

 inner branches to the margin, and near the proximal end of the basal 

 joint. The two branches are more widely apart than is usual in the genus 

 Laophonte. 



Laophontodes typic/is, sp. n. (PI. VIII. figs. 2-8.) 



Description. — Female. Length, '4 mm. (^Vnd of an inch). Body seen 

 from above, narrow, elongate ; the breadth gradually decreasing towards the 

 posterior end. All the segments more or less angular. The first cephalo- 

 thoracic segment is nearly quadrangular in outline ; the middle part of the 

 front margin is produced to form a broad sub-truncate rostrum. Anterior 

 antennae short, five-jointed. All the joints are comparatively eJongate, 

 except the fourth, which is very small. The formula shows the proportional 

 lengths of the joints : — 



5 _§J_J_ ;J • 5 • 



1 '.« 2 ' 3 ' 4'5 ' 



Posterior anteunae two-jointed, and of moderate size ; no secondary 

 appendage (fig, 4). Posterior foot-jaws small, three-jointed ; the end joint 

 very small. Terminal claw slender, slightly curved at the apex (fig. 5). 

 First pair of thoracic feet like those of Laophonte. Second joint of the 

 inner branches is scarcely equal to one-third the length of the first joint. 

 Terminal claw slender, strongly hooked at the end. A small seta springs 

 from the base of the claw. Outer tranches three-jointed ; the first and 

 second joints sub-equal, the third shorter, the entire outer branch is 

 equal to fully half the length of the first joint of the inner branch (fig. 6). 

 Inner branches of the second, third, and fourth pairs short, two-jointed, and 

 articulated to the second basal joint near its proximal end. The first joint 

 of the inner branches is very small, the other is elongate. Outer branches 



