86 MODERN SYSTEM. 



the male be taken away, another will be found in the hole at the next 

 recess of the tide. By knowing this fact, an experienced fisherman 

 may twice aday take, with little trouble, a vast number of specimens, 

 after having once discovered their haunts. In the winter they are 

 supposed to burrow in the sand, or to retire to the deeper parts of 

 the ocean. They are taken in wicker baskets, resenibhng mouse- 

 traps, or in large nets with open meshes, which are placed at the 

 bottom of the ocean and baited with garbage. 



Genus 7. XANTHO. Leach. 



External antenna very short, inserted in the internal corner of the eye; 

 internal antenna" received in a foveola under the prominent margin 

 of the clypeus, the peduncle sublinear : external doiMc palpi, with the 

 second joint of the internal footstalk, notched at the internal apex : 

 shell submargined behind : orbits entire above, below externally with 

 one fissure: anterior pair of legs miequal. 



Sp. 1. Xun.florida. Wrists above, with two tubercles : shell on each side 

 with four obtuse teeth, the interstices cut out: fingers black. 



Montagv, Trans. Linn. Soc. xi. 85. t.2.f.\. Cancer incisus. Leach, 

 Edin. Enci/cl.v'u. o91. Xantho incisa. Leach, EcUn. Encycl.Vn. 430. 

 Xanthoflorida. Leach,Tram. Linn. Soc.xi. 320. — Suppl. toEncycl. Brit, 

 —Mai. Podoph. Brit. tab. 11. 



B. Abdomen in both sexes seven-jointed. Tuo anterior legs didacti/le. 

 Division I. Eight hinder legs simple, and alike in form. 

 Fam. IV. PiLTjMNiD.i:. Leach's MSS. 

 Shell anteriorly arcuated, the sides converging to an angle : two anterior 

 kgs unequal. 



Genus 8. PILUMNtS. Leach. 

 External double palpi with the second joint of the internal footstalk 

 with the internal apex truncate emarginate : chms simple, with naked 

 tips. 

 Sp. 1. Pil. hirtelhis. Body and legs bristly: shell with five teeth on 



each side : claw somewhat muricated on the outside. 

 Cancer hirtellus. Linn., Pcnn., Leach, Edin. Enci/cl. Pilunurus hirtelhis. 



Leach, Snppl. to Encijcl. Brit. Leach, Mai. Podoph. Brit. tab. VI. 

 Inhabits the south coast of Devonshire. 



Fam. V. OcypodaidjE. Lecwlis MSS. 

 SheU quadrate or subquadrate : eijes inserted in the front. 

 * Shell quadrate. Ei/es zcith a long peduncle. 

 Genus 9. VIN'^OTVAIES. Lair., Bosc, Leach. Alpii.tas. Dahlorf. 

 ^ntennavery short (the first three joints largest), inserted in the inte- 

 rior corner of the eyes: external double palpi, with the hitcrnal foot- 



