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, resembling 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 \cry short, inserted in the internal corner of the eye; 

 internal antenn(£ received in a foveola under the prominent margin 

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

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

 shell submargincd behind : orbits entire above, below externally widi 

 one fissure: anterior pair of legs unequal. 



Sp. 1. Xan.Jlorida. Wrists above, with two tubercles : shell on each side 

 \\\\\\ foiu- obtuse teeth, the interstices cut out : fingers black-. 



Montagu, Trails. Linn. Soc. xi. 85. t. '2. f. I. Cancer incisus. Leach, 

 Ediii. Eiici/cl.x'n. 391. Xantho iucisa. Leach, Edin. Enctjcl.sW. -130. 



' Xantho florida. Leach, Trans. Linn. Soc. xi. 320. — Suppl. to Encj/cl. Brit. 

 ^Mal. Podoph. Brit. tab. 11. 



B. Abdomen in both sexes seven-jointed. Two anterior legs didacfi/le. 



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



Fam. IV. PiLiMMD.t. Leach's MSS. 



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

 legs unequal. 



Genus 3. PILUrVIXI^S. Leach. 

 External double palpi with the second joint of the internal footstalk 



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



tips. 

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



each side : claw somewhat muricated on the outside. 

 Cancer hirtellus. Linn., Penn., Leach, Edin. Encj/cl. I'ilumnus hirtellus. 



Leach, Suppl. to EuctjcI. Brit. Leach, Mai. Podoph. Brit. tub. 12. 

 Inhabits the south coast of Devonshire. 



Fam.V. OcYPODAiD.TL. Leach's MSS. 

 Shell quadrate or subquadrate : ej/es inserted in the front. 

 * Shell quadrate. Et/cs with a long peduncle. 

 Genus 9. PINNOTERES. Latr., Bosc, Leach. Alph^vs. Daldorf. 

 Antennce very short (the first three joints largest), inserted in the inte- 

 rior corner of the eyes: external double palpi, with the internal loot- 



