THE COPENHAGEN MUSEUM AND OTHER SOURCES. 405 



blunt spine, mth a similar but much sliortev one below it ; the finger ciu-ved, its inner 

 setule minute. In the third and fifth pairs the second joint is somewhat orbicular ; in 

 the fourth pair it is oblong oval, rather wider above than l)eloAV. 



First and second nropods. Both rami have lateral sj)ines. 



Third uropods. The ramus is as long as the peduncle. 



Telson. The lobes are bluntly triangular. 



Length, xibout one-sixth of an inch, 4 mm. 



Hab. St. Thomas's Harbour. The specimens, which belong to the Copenhagen 

 Museum, were obtained in the Danish West Indies by Clir. Levinsen, and reached me 

 mixed with specimens of Hyide Perierl (Lucas) and Si/cde media (Dana). 



A specimen in the same collection, from Rio Janeiro, is probably a younger form of 

 the male of this species. It has a flagellum of ten joints to the first, and one of 

 eighteen to the second, antenna\ The first gnathopods are without the strong bulging 

 at the juncture of the palm with the hind margin. The second gnathopods have the 

 long oblique palm smoothly curving and defined from the short liind margiai by a small 

 pocket, which the long finger reaches. 



Htale marotjbrjE) n. sp. (Plate 32 C.) 



Body rather compressed, shining. Third pleon-segment with postero-lateral corners 

 quadrate. 



Eyes. Roughly rounded, about their diameter apart, moderately dark in spirit. 



First antenncs. These reach well beyond the peduncle of the second jiair. The 

 peduncle is short, the first joint equal to the second and third combined ; the flagellum 

 has nine slender joints. 



Second antenna;. About half the length of the body ; the flagellum longer than the 

 peduncle, slender, composed of nineteen joints. 



First gnathopods. 6 . The fourth, fifth, and sixth joints are subequal in length ; the 

 fourth has a produced, broadly-rounded apex, carrying one or two spinules ; this apex is 

 separated from the sixth joint by the rounded hind lobe of the fifth, which is fringed 

 with about eight graduated spines ; the sixth joint is oblong, but scarcely longer than 

 the width, which is rather greater at the j)alm than the base ; the hind margin from 

 near the base is fringed with spinules which pass round on to the surface and meet a 

 transverse row of small spinules, across which the short finger closes, as though they 

 represented the true course of the j^alm, but the hinder half of the distal margin of the 

 sixth joint extends beyond these in a microscopically denticulate lobe at right angles to 

 the hind margin, though the junction is rounded ofi". 



Second gnathopods. d . The second joint is slightly lohed at the front apex, down- 

 ward, not outward ; the third joint has a small outward lobe ; the fourth joint is small, 

 a little produced at the hind apex; the fifth is very small, triangular; the sixth very 

 large, oval, broadest proximally, the hind margin very short, the spine-fringed palm 

 very oblique and long, well defined, the long finger nearly reaching the fourth joint, its 



56* 



