THE AMPHIPODA. 21 



5. Parascina Eowleri, n. sp. (Plate 2 b.) 



Eront of head straight, inclining to concave, hack seemingly rovinded, side-plates of 

 pergeon small, not angular ; first three segments of pleon with postero-lateral angles 

 rounded, fifth and sixth segments coalesced. Eyes protuberant. 



Eirst antennae considerably shorter than the perseon, the peduncle short, two-jointed ; 

 first joint of flagellum as in Scina long, stout, tapering, bordered with sensory filaments, 

 moderately numerous and slender. To the apex of the long joint succeed two small 

 distinct joints, followed by a short spine-like piece resolvable into two slender joints and 

 a spine. 



Second antenms. — These are of the rudimentary character usual in the female Scinidse. 

 The first joint is broader than long ; the second longer than the first, tapering, rather 

 suggestive of two joints coalesced ; the third minute, tipped with a minute setule. 



The upper lip was not very exactly determined. It has apparently a small very 

 unsymmetrically placed emargination of the distal border. 



The mandibles are long and narrow, widest at the point at which the margin becomes 

 free and slopes to the cutting-edge. This is furnished with a rather large tooth above 

 and a smaller one below. On one mandible there is perhaps a small inner plate, bvit 

 certainly none on the other, on which, however, the lower tooth seems to be subdivided. 

 The surface of the mandibles is hirsute near the cutting-edge and also in the place of 

 the spine-row. The molar is unrepresented. 



The lower lip has two rounded principal lobes, which are feebly hirsute. The mandi- 

 bular lobes are rather broadly rounded. 



'First maxillce. — The inner plate has an even width, with a slight curve, the dista' part 

 and broadly rounded apex being strongly hirsute. The outer plate continues the 

 considerable breadth of its base, and carries a group of spinules on the surface 

 proxiraally, while the free border is fringed round with spinules, to which are added five 

 strong spines on the broad flattened distal margin, and some slighter ones on the outer. 

 The palp at the base is not quite so wide as the outer plate, but presently in super- 

 position outflanks it on both edges and reaches beyond its distal spines, being itself 

 armed only with four to six spinules spaced along its outer margin. 



Second maxillcB. — The inner plate is very broad, squarely truncate at the distal 

 margin, which with the straight inner edge is strongly hirsute ; the sUghtly convex outer 

 margin is smooth, except distally, where two larger spines are set among some that are 

 smaller. The surface carries spinules and spines, of which one near the inner distal angle 

 is conspicuous. The outer plate is much narrower, with nearly straight inner and 

 convex outer margin meeting at the apex, both fringed with slender spines, the outer 

 margin carrying distally four of stronger build. 



The maxillipeds have two broad inner plates, or possibly a single plate divided 

 into two lobes, both distally hirsute, the distal corner of each (as seen separate and 

 flattened) forming a little sharp point. The outer plates are much larger, smoothly 

 rounded externally till near the apex, where three spines are spaced. The inner 

 margins are adjacent, except at the apex, and are fringed each with eight or nine slight 

 spines. 



