THE COPEXHAGEN MUSEUM AND OTHEE SOURCES. 43 



Ilatidibles. The cutting-edge small, little dentate, the molar massive; the third joint of 

 the jmlp hroad, distally fringed with spinules. 



First ma.rillcB. Inner plate oval, tipped with two setse, outer plate with the eleven 

 apical spines very small, inconspicuously denticulate ; second joint of the palp broad, 

 with some apical setules. 



Second maxill<B. The inner j)late hroader than tlie outer, both apically fringed with 

 spines, which are longer on the outer plate. 



Ila.rilUpeds. The inner plates broad and with the inner margins pi'otruding ; the outer 

 plates reaching scarcely beyond the end of the first joint of the palp, fringed wdth slender 

 spines on the inner margin ; the second joint of the palp rather large, fringed with long 

 setjB, the third joint much narrower but not much shorter, the fourth both short and 

 narrow^, tipj^ed wdth spines or setfe. 



First gnatJiopods. Side-plate distally widened. The second joint is moderately long 

 and narrow', unarmed ; the fourtli little longer than the third ; the fifth in the male 

 considerably longer and narrower than the sixth, both having the hind margin fringed 

 Avith spinules; the sixth is rather longer than broad, with S2:)inules at the front apex, and 

 a small palm which matches the weak finger. In the female there is little difference in 

 the length and breadth of tlie fifth and sixth joints. 



Second gnatJiopods. Side-plates broader and of more uniform width than the preceding 

 pair. In the male the second joint is narrowed at the point of attachment and broadest 

 near the centre, though nowhere very broad ; the fourth joint is longer than the third, 

 but shorter than the fifth, all three being narrow ; on the contrary, the sixth, besides 

 being longer than the fiftli, is from the very base enormously broader, its front margin 

 nearly straight, the ojiposite curved, slightly crenulate, the broad, slightly sloping palm 

 divided into three or four irregular teeth ; the smooth, curved, and rather massive finger 

 closes down over the palm into a great pocket excavated in the thickness of the hand. 

 In the female these limbs closely resemble the feeble first gnathoi:)ods, but with the fifth 

 and sixth joints a little longer. 



First per (Bopods. Side-plates with convex front and concave hind margin. The second 

 joint moderately long, the sixth longer than the fourth or fifth, which are subequal ; the 

 finger sliort, acute, slightly curved, having a spinule on tlie concave margin. 



Second perceopods. Side-plates larger than the preceding, the hind margin excavate, 

 serrate below the excavation. The limb resembles that in the preceding pair, but with 

 the fourth and fifth joints a little longer. 



Third perceopods. Side-plates not very large, pretty equally bilobed, the hind lobe 

 produced below the front. The second joint tending to oval, the hind margin feebly 

 serrate ; the fourth joint rather strongly produced downward. 



Fourth perceopods. Side-plates with hind lobe produced much below the front. The 

 second joint more oblong tlian in the preceding pair, the hind margin nearly straight, 

 fringed with long setge ; the fourth joint strongly produced. 



Fifth piei'ceopods. Side-plates small. Second joint larger than in the preceding pair, 

 the straight hind margin more strongly produced downward ; the fourth joint similar 

 to that in the preceding pair, but with more numerous spines ; the fifth and sixth joints 



