CLASS I. crv^tacea. D3 



Inhabits the rocky shores of the southern and western coasts of Bri- 

 tain, conceahng itself beneath stones, to the under side of which it 

 adheres closely. 



Genus 22. GALATEA. Leach. Galathea. Fahr., Latr., Lam., 

 Bosc, Leach. 

 External double palpi with the internal edge of the firstjoint not diluted : 

 shell ovate. 



* Rostrum acuminate, acute, zcith four spines on each side. Anterior 

 legs compressed. Abdomen -with the sides of' the seg7ne7its obtuse. Tail 

 zcith the intermediate lamella triangular, the tip enuirginate, the apex 

 of the lacinia rounded. Interior untennm xcith the Jirst joint of' the 

 pedu7icle trispinose. 



a. Second joint of the intei'na I footstalk of the external double palpi 

 longer than the first. 



Sp. 1. Gal. squam'fera. Anterior legs granulate-spinose : hands exter- 

 nally subserrated : wrists and arms internally spinose. 



Galatea Fabricii. Leach, Supp. to Encycl. Brit. 'i. 4l9.pl. 21. Gala- 

 thea squamifera. Leach, 2'iavs. Linn. Soc. xi.310. — ]\Ial. Podoph. Brit, 

 tab. 28. A. 



b. Second joint of the internal footstalk of the external double palpi 

 ahoj-ter than the first. 



Sp. 2. Gal.spinigei-a. Anterior legs subgranidate squamose; above and 

 on each side spinose : arms externally without spines. 



Astacus strigosus. Pe^in. Brit.Zool. iv. 18./)/. 14. Cancer (-^.sfrtcws) stri- 

 gosus. Herbst, tab. 26. f. 2. Galathea strigosa. Fubr., Lafr., Leach. 

 Galathea spinigera. Leach, Malac. Fodoph. Brit. tab. 28. B. 



** Rostrum elongate, spiniform; the base on each side bispinose. 

 Anterior pair of legs snbci/l'indr'ic. Abdomen zvith the sides of the seg- 

 ments acute. Tail zcith the intermediate lamella transverse-quadrate ; 

 the apex subemurg'niate. Interior antenna: with the frst joint of the pe- 

 duncle four-sp'ined. {Fxlernal double palpi zcith the first joint of the in- 

 tcrnal footstalk longer than the second.) 

 Sp. 3. Gal. rugosa. Anterior legs spinose, especially internally : abdo- 

 men Avith the second segment antcriorl}' with six ; the third with 

 four spines. 

 Astacus Bamffius. Fenn. Brit. Zool. iv. 17. pi. 27. Galathea rugosa. 

 Fabr., Bosc, Latr. Cancer rugosus. Gmel. Syst. Nat. i. 2985. Ga- 

 lathea longipeda. Lain. St/st. dcs Anim. sans Vert. 158. Galathea Bamf- 

 fia. Leach, Edin. Encycl. vii. 398. Galathea rugosa. Leach, Malac. 

 Podoph. Brit. tab. 29. — Trans. Lijin. Soc. xi. 341. 

 Inhabits the European ocean and Mediterranean sea. It is very rare 

 in Britain, but has been found on the Bamffshire coast and in Pl}'- 

 mouth sound. 



