of the Fishery Board for Scotland. 125 



or secondary joints ; these joints, which are of an ovate form and about 

 one and a half times as long as broad, bear five setae round the lower 

 outer margin and end, the middle one being rather longer than the others; 

 the produced inner portion of the basal joints, which scarcely reach to the 

 end of the outer secondary ones, have the sides slightly rounded and taper 

 to the narrowly-rounded apex ; they are each furnished with five setae — 

 three on the lower inner margin and two close together at the apex, as 

 shown by the following drawing (fig. 7). 



The f ureal joints are shorter than the last abdominal segment ; they 

 each appear to be abruptly truncate, and their principal setae are elongated 

 and slender (fig. 8). 



Habitat. — In a shore gathering collected at Musselburgh, Firth of 

 Forth, in 1894 ; rather rare. 



Remarks. — The copepod described above has as great resemblance to 

 Stenhelia as to Dactylopus in its general appearance and in some of its 

 structural details, as, for example, in the structure of the first thoracic 

 feet, but in the structure of the antennules, mandibles, and fifth thoracic feet 

 its relationship appears to be closer to Dactylopus ; it differs from 

 described species in structure of the antennules, in the comparatively stout 

 form of the first thoracic feet, and in the form and armature of the fifth 

 pair. It appears to be a littoral species, as I have only observed it in 

 inshore gatherings. 



Dactylopus vararensis, T. Scott, sp. nov. PL iii., figs. 17-24. 



Description of the Female. — Body moderately stout, length about 

 *75 mm. (about ^ 3 of an inch). 



Rostrum prominent, slightly incurved (fig. 17). 



Antennules short, eight-jointed, the first four and last joints sub-equal 

 in length, the other three short ; the first four joints are also considerably 

 stouter than the last four (fig. 18) ; the formula shows approximately the 

 proportional lengths of the joints : — 



23 •' 22 • 29 ■ 18 ■ 6 • 10 • 7 ■ 20 



The secondary branches of the antennae are composed of three joints, 

 but the middle one is small. 



The mandibles are stout and sub-cylindrical, and the biting part is some- 

 what oblique and armed with about three strong and several small 

 spiniform teeth; the basal joint of the palp is somewhat dilated, and 

 carries two branches, the proximal one being considerably smaller than the 

 other, as shown in the drawing (fig. 19). 



The second maxillipeds have the penultimate joint moderately elongated 

 and narrow, with a fringe of small setae on the inner aspect of its proximal 

 half ; the end joint is scarcely broader than the base of the terminal claw, 

 which is moderately long and slender, and incurved toward the extremity 

 (fig. 20). 



In the first pair of thoracic feet, the outer branches, which are com- 

 posed of three sub-equal joints, are rather longer than the first joint of the 

 inner branches ; the first two joints are armed with moderately strong 

 spines on the outer distal angles, while the end joint bears, at the apex, 

 two slender spines and two setae ; the first joint of the outer branches is 

 moderately stout, but scarcely twice as long as the combined lengths of 

 the outer two, which are small, narrow, and sub-equal : the inner branches 

 are armed with a stout terminal claw and two setae ; the first and second 

 joints are also each provided with a seta near the distal end of the inner 



