260 A HISTORY OF RECENT CRUSTACEA 
gaster ingens by Dr. Dohrn in 1870. This is the largest 
species, the specimens measuring rather more than six 
inches, while those of Gnathophausia gigas, v. Willemoes 
Suhm, measure rather less than six inches. Vivid red 
and magnificent carmine appear to be the prevalent 
colouring in tke genus. It is probable that the two 
species mentioned, together with two others, calcarata, 
Sars, and gracilis, v. Willemoes Suhm, will be eventually 
retained in this genus to the exclusion of the other 
species, which are destitute of the rudimentary exopod on 
the first maxillipeds. 
Chalaraspis alata is accepted by Sars from the drawings 
and manuscript notes of v. Willemoes Suhm, but there 
was no specimen in the Challenger collection by which to 
control these records. 
Family 2.—Lucopiude. 
The carapace is very large, membranous, with the 
lateral margins produced over the base of the pleon. ‘The 
segments of the trunk are all well defined. The first 
maxillipeds are nearly as in the Lophogastridz; the three 
following pairs of appendages are inclined towards the 
parts of the mouth, and have a rather short and powerful 
structure, while the next three pairs are exceedingly long 
and slender, with nearly straight acute fingers, the remain- 
ing pair being shorter and less slender, not at all prehen- 
sile. The branchiz, marsupium, and pleopods are nearly 
as in the Lophogastridz. ‘The development is unknown. 
The family contains but one genus. 
Eucopia, Dana, 1852, has but a single species, Hucopia 
australis, Dana. This has no rostrum ; the eyes are small, 
the scale of the second antenne large, the mandibular 
‘palp’ very slender, the first maxillee with no reflexed ap- 
pendage, the second with a very large strongly fringed 
exopod. The first maxillipeds have a rather small exopod, 
but the epipod ‘enormously developed, lanceolate in form, 
and of a very soft and almost spongy structure.’ The three 
pais of legs preceding the last, remarkably long and 
