CT.ASS I. CRUSTACtA. 93 



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

 tain, concealhig itself beneath stones, to tlie underside of which it 

 adheres closely. 



Genus 22. GALATEA. Leach. Galatiiea. Fulr., Lutr., L-am., 

 Jiosc, Leach. 

 JLrternal douldc palpi with the internal edge of the first joint not dilated : 

 she /I ovate. 



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

 legs compressed. Abdomen with the sides of the segments ohtme. Tail 

 2i'Uh the intermediate ho/tella triangular, the tip emarginute, the apex 

 of the lacinitC rou)id^d. Interior^ an tennts uith the Jirst joint of the 

 peduncle trispinose. 



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

 loi^ger than the first. 



Sp. 1. Gal.squamifera. Anterior legs granulate-spinose : hands exter- 

 na.ly subserrated : wrists and arms internally spinose. 



Galatea Fabricii. Leach, Supp. to Enci/cl. Brit. i. 419. pl.-21. Gala- 

 thea squamifera. Leach, Trans. Linn. Soc. xi. 340. — Mai. Fodoph. Brit, 

 tab. 28. A. 



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

 shorter than the first. 



Sp. 2. Gal.spinigera. Anterior legs subgranulate squamose; above and 

 on each side spinose: arms externally without spines. 



Astacus strigosus. Penn. Brli.Zool. iv. 18. ja/. 14. Cancer (^'lsto?<s) stri- 

 gosus. Herbst,tab.26.f. 2. Galathea strigosa. Fabr., Lair., Leach. 

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



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

 Anterior pair cf legs s?ibcylindric. Abdomen zcith the sides of the seg- 

 7nciits acute. Tail ivilh the intermediate lamella t ransrerse -quad rate ; 

 the apex subemarginate. Interior antenna with the frst joijit of the pe- 

 duncle four-spined. [External double palpi with the first joint of the in- 

 ternal footstalk longer titan the second.) 

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

 men with the second segment anteriorly with six; the third with 

 fuur spines. 

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

 Fubr., Bosc, Latr. Cancer rugosus. Gmel. Si/st. Nut. i. 2985. Ga- 

 lathea longipcda. /-«///. Sj/st. des Anivi. sans Vert. 158. Galathea Barnf- 

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

 Fodoph. Brit. tab. 29. — Ti-ans. Linn. Soc. xi. 341. 

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

 in Britain, but has been found on the Bamft'shire coast and in Ply- 

 mouth sound. 



