en) 
FROM CORNWALL 10 AMBOINA 22 
Family 1.—Nikide. 
The rostrum is horizontal with the dorsal surface of 
the carapace; the mandibles are without a cutting edge, 
and are without ‘palp ;’ the first pair of trunk-legs are 
simple or chelate, and stronger than the second, but not 
so long; the second are minutely chelate. 
To this family Spence Bate apparently refers three 
genera distinguished as follows :— 
Nika, Risso, 1816, with one of the trunk-legs of the 
first pair chelate, and the other simple. 
Glyphocrangon, A. Milne-Edwards, 1881, with both of 
the trunk-legs of the first pair simple. 
Tysmata, Risso, 1826, with both of the trunk-legs of 
the first pair chelate. 
There are various other marks of distinction, such as 
the flagella of the first antenne, of which in Nika one is 
long, the other short, while both are short in Glyphocran- 
gon, and both long in Lysmata, this latter genus carry- 
ing also a third lash which is short. In Nika, the second 
pair of trunk-legs are, like the first, not strictly a pair, 
since they differ oreatly in length. Nika ediilis, Risso, is 
found in British waters. On the shores of the Mediter- 
rauean it is used for food, as the specific name implies, 
and the same is said of Lysmata seticaudata, Risso, a coral- 
red species, longitudinally striped with whitish lines. Bell 
describes a second British species of Nika, as Nika Couchu, 
in which the telson is not channelled, and Spence Bate 
speaks vaguely of a British specimen of his Nika processa 
taken by the Challenger at Amboina, but apparently with- 
out any intention of separating the British specimens from 
Nika edulis, and in his edition of Couch’s ‘Cornish Crus- 
tacea, he expressly says that Nika Couchit of Bell is 
nothing more than a variety of N. edulis. Of Glypho- 
crangon many species have been described from north and 
south and east and west, some of the forms descending to 
ereat depths; but Spence Bate, who names no less than 
six of the species, says that ‘the various forms of this 
genus can scarcely be considered as being more than 
