LICHOMOLGUS. 45 



as long as the last. The basal portion of the man- 

 dibular stilet (fig. 4) bears a comb of fine tooth-like hairs 

 on its outer margin ; the marginal pectination of the 

 first foot-jaw (fig. 5) is of a finely setose character; the 

 second foot-jaw of the female (fig. 6) has a subpyriform 

 terminal spine; that of the male (fig. 7) has an elon- 

 gated subovate hand, which is fringed with short cilia 

 along the proximal half of its inner edge, and is armed 

 at the apex with a long falciform claw. The swimming- 

 feet are not very different from those of the preceding 

 species, except the fourth (fig. 10), which has its inner 

 branch uni-articulate, and as long as the first two joints 

 of the outer branch. The fifth foot (fig. 11) consists 

 of a single slender, subulate joint, to the base of which 

 is attached a stout seta, equal in length to the joint 

 itself. The abdomen of the female (fig. 12) consists 

 of five segments, the first and second being distinctly 

 separate ; in the male (fig. 13) the first segment is 

 much enlarged, and produced backwards into two 

 strong lateral spines ; all the joints in both sexes are 

 much broader than long ; the caudal segments are 

 about twice as long as broad, and equal in length to the 

 last abdominal somite ; terminal setaB five, subequal, 

 finely plumose, and about half as long as the abdomen. 

 Length -^nd of an inch (1*1 mm.). 



I have notes of the occurrence of this species in 

 dredgings from Marsden and Hawthorn (Durham 

 coast), 20 27 fathoms; off Scarborough; off the 

 south end of the island of Bute, 16 fathoms ; and 

 amongst muddy sand, Lough Swilly, in a depth of 

 7 8 fathoms. As in the case of L. fucicolus, 



