_405_ 



segment rather large and expanded, equalling in length the 4 succeeding segments 

 combined ; rostral projection broadly triangular in form. Urosome somewhat shorter 

 than the anterior division and having the segments coarsely spinulose at the hind 

 edge ventrally and laterally, last segment fully as large as the preceding one. 

 Caudal rami about the length of the anal segment and slightly tapered distally, 

 apical setse of moderate length. Anterior antennae comparatively slender, exceeding 

 in length the cephalic segment, and composed of 8 joints, 2nd joint, as usual, 

 the largest, 3rd joint scarcely longer than 4th, terminal part much longer than 

 those two joints combined. Outer ramus of posterior antennae uniarticulate, 

 ciliated on the edges and carrying on the tip 3 seta3, the middle one the 

 longest. Mandibular palp comparatively small, but distinctly biramous. Anterior 

 maxillipeds with only 2 setiferous lobes inside the basal joint. Posterior maxil- 

 lipeds with the hand rather narrow, oblong in form. 1st pair of legs com- 

 paratively large, outer ramus shorter than the 1st joint of the inner and 

 having the middle joint the largest; 1st joint of inner ramus more than twice 

 as long as the other 2 combined, apical spine of this ramus rather slender. 

 The 3 succeeding pairs of legs scarcely differing in structure from those in 

 the other species of the genus. Last pair of legs with the distal joint com- 

 paratively large, oblong fusiform in shape, and very finely ciliated on the edges, 

 marginal setae 5 in number, one of them attached at some distance from the 

 others to the outer edge in front of the middle; inner expansion of proximal 

 joint only very slightly produced, and carrying 4 unequal setae. 



Colour not yet ascertained. 



Length of adult female 0.52 mm. 



Remarks. This is a somewhat anomalous species, though apparently 

 referable to the genus Ameiropsis, according to the structure of the mandibles 

 and legs. It may at once be recognized from any of the other species by the 

 short and stout form of the body. 



Occurrence. Only a solitary female specimen of this form has as yet 

 come under my notice. It was found in a sample taken last summer at Kors- 

 havn from a depth of about 20 fathoms, sandy bottom. 



Page 229. 

 Add the following species : 



Stenocopia spinosa, (Scott). 



(Suppl. PI. 34). 



Ameira longicaudata, var. spinosa, Th. Scott, Additions to the Fauna of the Firth of Forth, 

 Part IV. 10th Ann. Rep. of the Fishery Board for Scotland, p. 251, PI. IX, figs 17 & 18. 

 r >4 Crustacea. 



