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HISTORY OP BRITISH CRUSTACEA. 
poda, which is here adopted, is mostly from Mr. Spence 
Bate’s Synopsis in the February number of the f Annals and 
Magazine of Natural History.’ That gentleman has made 
the Order his special study, and has added many genera and 
species to our Marine Fauna. 
Fam. ORCHESTIDJH. 
Adapted for leaping. Mandibular palpus wanting. Body 
compressed ; epimera broad. Two shortish posterior caudal 
appendages. Upper antennae shorter than basal joints of 
lower antennae. 
Gen. 58. TALITBUS, Lair. 
First pair of feet simple in both sexes. Second pair of 
feet not subcheliform ; upper antennae shorter than the two 
basal joints of the lower ones. Lower antennae long. 
The species of this genus live in great companies, and 
prey on garbage stranded on the coast, devouring quickly 
both animal and vegetable matter. They can dig into the 
sand with their fore feet. 
Talitrus locusta. Common Sand-hopper. —Move or 
less of a horny colour. Antennae reddish ; those of the male 
longer than the body. Second pair of legs much smaller 
