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HISTORY OR BRITISH CRUSTACEA. 
dry I cannot see them at all, but I believe they are always 
present, but are rendered invisible bv particles of dust on 
the rostrum. Most of my specimens are from Lamlash 
Bay, where it is not uncommon in six to ten fathoms.” 
Hippolyte Barleei, Bate.^ — Beak one-third the length 
of the carapace, the front slightly turned up ; the lower 
margin smooth, the upper armed with four teeth, the two 
centre of which are partially confluent. 
Hab. Sea off the Shetlands (Mr. Barlee). Described by 
Mr. Bate from a mutilated specimen, the colour of which, 
when dead, was greenish. It is named in compliment to 
Mr. Barlee, a gentleman who has been most successful in 
his exploration of the seas that wash the Shetland islands, 
where he has discovered many Mollusca and Zoophytes to 
be abundant, which are either rare or not found in more 
southern parts of the British seas. 
Hippolyte Frideauxiana, Leach.— A very small species 
with a straight beak, unarmed above, and with one or two 
spines beneath in front. 
Coast of Devonshire, where it was found by Mr. Pri- 
deaux, a correspondent of Dr. Leach, who named this 
species in compliment to its discoverer. 
* Spence Bate, Ann. and Mag. N. Hist. 1852, x. p. 357. pi. v. B. fig. 1. 
