AXIUS. 
AXIUS. Leach. 
Antennce in eadem fere linea horizontali insert® : 
exteriores setace® corporis fere longitudine ; 
interiores setis duabus. 
Pedipalpi gemini externi articulis duabus primis sublongioribus, ®qualibus 
Pedes decern : par anticum majus didactylum valde inaequale : par secundum compressum di- 
dactylum : paria alia compressa simplicia ; par quintum minus compressum gracilius. 
Abdomen 6-articulatum. 
Cauda pentaphylla lata : lamella intermedia elongato-triangularis ; lamellis exterioribus medio 
costatis. 
Antennas inserted nearly in the same horizontal line : exterior ones setaceous, and nearly as 
long as the body : interior ones with two set®. External double pedipalpes, with the two first 
joints somewhat longer than the others, and of nearly an equal length. Legs ten : anterior 
pair largest, didactyle and very unequal: second pair compressed, didactyle : other pairs 
compressed and simple : fifth pair less compressed and more slender than the others. Abdo- 
men six-jointed. Tail with five broad plates: the intermediate plate elongate-triangular: 
exterior plates with their middles costated. 
AXIUS STIRYNCHUS. 
Tab. XXXIII. 
A. rostro marginato medio carinato, thorace pone rostrum lineis duabus elevatis abbreviatis 
postice emarginato ; emarginatione basi prominente. 
Axius stirynchus. Leach Trans. Linn. Soc. xi. 343. 
Pig. 1. A. Stirynchus mag. nat. 2. Antenna interior. 3. Antenna exterior. 4. Pedi- 
palpus. 5. Pes anticus. 6. Pes secundus. 7. Pes tertius. 8. Pes quartus. 9. Pes quintus 
Axius Stirynchus was first obtained by myself at Sidmouth, where it was taken amongst 
prawns on the shore. Montagu afterwards procured near Plymouth another specimen, which 
forms part of his collection of British Zoology, lately purchased by the trustees of the British 
Museum. 
