of the Fishery Board for Scotlaiid. 131 



very small, but the remaining three are about equal in length and taper 

 slightly to the distal end. The antennules are also sparingly setiferous, 

 and carry several stout and elongated sensory filaments. 



The antennae are composed of four joints, the first two are large and 

 somewhat dilated, but the third and fourth are narrow — the third being 

 also very short ; the end joint is furnished at the apex with a stout, 

 strongly-hooked claw and several spiniform setae (fig. 18). 



The mandibles and maxillae resemble very closely the same appendages 

 in Lichomolgus fucicolus, G. S. Brady. The mandible is small, with a 

 dilated base, and carries two stout, moderately long, and strongly curved 

 apical appendages and two small basal setae. The maxillae are small and 

 digitiform, and at the apex furnished with two slender spiniform setae 

 (fig. 19). 



Second maxillipeds very small, and each armed with a stout, strongly- 

 curved, and moderately elongate terminal claw (fig. 20). 



The first feet were damaged, and the inner branches are not figured. 

 The outer branches are three-jointed ; the first joint is short and bears a 

 sabre-like spine on the outer distal angle, but no setae on the inner 

 margin. The second joint, which is also short, carries a sabre-like spine 

 on the outer distal angle and a moderately long seta on the inner margin. 

 The third joint, which is longer and narrower than those preceding, is 

 furnished with three short sabre-like spines on the outer margin, and a 

 similar but rather longer one at the apex. There are also four moderately 

 long plumose setae on the inner margin (fig. 21). 



The second pair have the outer branches very similar to those of the 

 first pair in structure and armature, except that the third joints have five 

 setae on the inner edge. The first and second joints of the inner branches 

 have no spines or setae on the outer margins, but the third joint is provided 

 with a short spine near the distal end of the outer edge, and with two that 

 are longer but of about equal length at the apex. The first joint has one 

 seta on the inner margin, the second two, and the third three. The end 

 oint is also considerably longer than the first or second (fig. 22). 



In the third pair, the first and second joints of the outer branches are 

 similar in structure and armature to the same joints in the second pair ; 

 the third joints are armed with two sabre-like spines on the outer margin, 

 and with two similar terminal spines ; there is also a row of five plumose 

 setae on the inner margin. The inner branches are provided with one seta 

 on the inner edge of the first joint, and two on the inner edge of the 

 second and third joints. The third joint bears also three moderately long 

 sabre-like spines on its truncate apex, but there are no spines or setae on 

 the inner margins (fig. 23). 



In the fourth pair, the inner branches seem to be entirely obsolete, 

 for on either foot there is no appearance of the endopodites having been 

 broken off. 



The outer branches are normal and their armature is very similar to 

 that of the outer branches of the third pair (fig. 24). 



The fifth pair are rudimentary, and consist each of a minute digitiform 

 process bearing two small hairs, as shown in fig. 16. 



jNo form that could be regarded as the female of this species has yet 

 been observed. 



