188 Messrs. T. and A. Scott on Thr^ 



Remarhs. — This species was obtained early in 1896 among 

 some " refuse " trawled between Lowburn and Cairndow, 

 near the head of Loch Fyne. The remarkable series of comb- 

 like spinules on the terminal claws of the first pair of 

 swimming-feet arrested the attention at the very outset; the 

 creature had only to be turned on its side under the micro- 

 scope to bring this character prominently into view ; on 

 dissecting the animal it was found that the terminal claws of 

 the posterior foot-jaws were also furnished with a similar 

 series of spinules : these peculiarities in the armature of the 

 appendages referred to, along with differences in the structure 

 of the antennules and of the fifth pair of thoracic feet, separate 

 this from any other species of Dactylopus known to us. We 

 would also point out that, though this species has many of 

 the characters of a true Dactylopus, the structure of the first 

 pair of swimming-feet is somewhat abnormal — for example, 

 the middle joint of the outer branches is scarcely longer than 

 the first, while the inner branches are apparently only two- 

 jointed ; and it may hereafter, for this reason, be considered 

 necessary to remove it to another genus, but meantime we 

 prefer to leave it where it is. 



Eurynotus * insolens, gen. et sp. n. 

 (PI. X. fig. 17 ; PI. XT. figs. 5-13.) 

 Description of the Female. — Length "8 millim. (y'y of an 

 inch). Body robust ; the thorax seen from above is broadly 

 ovate and indistinctly divided into two unequal segments, 

 the division of the segments being indicated by a slight 

 flexure on each side ; the anterior segment is about two thirds 

 the length of the other and slightly wider; the forehead is 

 broadly and more or less evenly rounded. The abdomen is 

 composed of four segments ; the first is somewhat dilated, but 

 the others are comparatively slender, and the caudal stylets 

 are about equal in length to the last abdominal segment; the 

 entire length of the abdomen and caudal stylets is scarcely 

 equal to half the length of the thorax (PL XL fig. 5). The 

 antennules are seven-jointed, short and stout, and taper 

 gradually towards the extremity ; the second joint is much 

 longer than any of the others, and besides being furnished 

 with several small hairs it carries a long plumose seta near 

 the distal end of the lower margin (PI. XL fig. 6). The 

 following are the proportional lengths of the joints — 



Proportional lengths of the joints. . 28 . 48 . 20 . 14 . 10 . 7 . 10 

 Number of the joints 1 2 3 4 5 6 7 ' 



* Gr. 'Evpvvmros, having broad shoulders. 



