FROM THE FAROE CHANNEL. 9 



the fourth (PI. 2. fig. 10). The proportional lengths o£ the 

 various joints are shown by the formula : — 



Number of the joints 1 2 3 4 5 6 7 8 



Proportional lengths of the joints: 16 14 10 13 5 7 8 13 



The antennae (second antennae) are somewhat similar to those 

 of Dactylopus Stromii. 



The mandibles (PI. 2. fig. 11) are also similar to those, of the 

 same species. 



The second maxillipeds (second foot-jaws) are moderately stout; 

 the first and second joints are each provided with two small setse, 

 as shown in the drawing (PI. 2. fig. 12). The terminal claw, 

 which is nearly as long as the second joint, is only slightly curved, 

 and furnished with a small lateral seta. 



The first four pairs of thoracic feet are almost similar to those 

 of Dactylo'pus Stromii (PI. 2. fig. 13). 



The fifth pair (PI. 2. fig. 14) have a general resemblance to the 

 same pair of feet in Dactylopus Stromii, but the armature of 

 the basal joint and the form as well as the armature of secondary 

 joint are different ; the basal joint is furnished with about five 

 terminal setge, the two iunermost of which are short and of 

 nearly equal leugfch, the next two are also subequal, but they 

 are about twice the length of the others — all these four setje are 

 moderately stout ; the fifth, which is close to the fourth, is com- 

 paratively small and slender. The secondary joint is broadly 

 ovate and is provided with sis setae round the distal eud ; the 

 innermost and the three outermost of these setae are moderately 

 stout and plumose, while the remaining two .ire slender and 

 elongate. 



The f ureal joints are very short. 



The male differs from the female in several ^particulars, the 

 following of which appear to be the more obvious : — The anten- 

 nules (anterior antennae) are modified for grasping. The first 

 joint of the inner branches of the first thoracic feet (PI. 3. fig. 1) 

 is shorter and proportionally much stouter than that of the 

 inner branches of the first pair in the fen] ale. The end joint of 

 the inner branches of the second pair of feet is prolonged into a 

 stout and spiniform process, which extends beyond tlie end of 

 the outer branches, and which bears one or two setae, as well as 

 an elongated slender filament (PI. 3. fig. 2). The fifth pair 



