736 THE VOYAGE OF H.M.S. CHALLENGER. 



Lower Lip. — The principal lobes very broad, flat-topped, with a large outstanding 

 tooth at the outer corner, with some strong cilia behind it, but the margin immediately 

 in front of it free from cilia ; from the outer corner a curved baud of long cilia runs 

 across the lobe towards the centre of the base ; the inner margin is free from cilia, but 

 has a small projecting process some way down ; the mandibular processes are broad, 

 folded as in Andania gigantea. 



First Maxillm. — The inner plate having about twenty strongly plumose setse along 

 the inner margin, some of the lower ones rather longer than the upper ; the outer plate 

 as in Andania gigantea ; the first joint of the palp very short, the second joint with its 

 apex more rounded than in the preceding species, the spines less elongate, and very 

 slightly feathered. 



Second Maxillse similar to those of Andania gigantea, the row of longer plumose 

 setse or spines numbering about five and twenty, set in a sinuous row, the centre part of 

 which is removed from the margin ; the shorter spines almost as numerous, plumose 

 below, denticulate above ; the narrow outer plate with about twenty spines of difierent 

 sizes round its distal margin, and two near the middle of the outer mai'gin, of which 

 there is no trace in the other species. 



Maxillipeds. — Inner plates broad and inflated, not reaching as far as the distal end 

 of the first joint of the palp, the inner margin and adjacent surface having numerous 

 very long plumose spines, the broad, truncate, indented distal margin also carrying six 

 or seven similar spines, and the series being continued by seven shorter spines round 

 the distal part of the outer margin ; the outer plates and palp similar to those of the 

 preceding species ; the first joint of the palp has, like the second, apical spines on the 

 outer margin, which in this species is much longer than the inner ; the second joint has 

 one or two groups of spines on the outer border besides those at the apex, and the narrow 

 third joint has two or three such groups, the arrangement not being entirely symmetrical. 

 The dorsal cilium of the finger not perceived. 



First Gnathopods. — The side-plates in this species agree with those described in 

 Andania gigantea. The first joint reaches beyond the side-plate, the front margin 

 fringed with short spines, the hind margin carrying long setse on the upper part, and a 

 small apical group of spines ; the second joint with a few spines on the hind margin and 

 its apex ; the third joint nearly rhomboidal, with a few feathered spines on the front and 

 hind margins, many and long on the distal ; the wrist triangular, distally cup-like, 

 broader than the hand, subequal to it in length, with long spines round the serrate hind 

 margin, a long row round the distal margin, a long row parallel to this on the outer 

 surface, with a smaller row nearer the base, while on the inner surface there are two long 

 oblique rows ; the hand tapers distally, -ndth a somewhat ovate form, the hind margin 

 fringed with finely feathered spines, the front margin having spines at the apex and at 

 two points above it, the inner surface having two longitudinal slightly oblique rows, or 



