ISOPOD GENUS LIQIDIUM. 



Text-lis;m-e 3. 



829 



Ligidium. Jit/pnoriim. a, head from front ; h, head from above ; c, Isfc tergite, . 

 lateral edge ; d, 1st and 2nd tcrgites from side; e, 1st pleopod, <?. 



1. LiGiDiUM iiYPNonuM (Guvier). (Toxt-figs. 1, 2, 3, 4.) 



Oniscus hi/pno7'am Cuvier, 1792, p. 19. Ligidium persoiiii 

 ]3i-,uidt (1833), p- 173. Ligia melanocephcda Koch (1847), H. 22 

 (162), 18. Zia melanocephcda Koch (1847), Zusammenstellung, 

 p. 212. Z.paludicola Koch (1847), H. 34 (180), 21. Ligidium 

 amethystium Schobl (1861), p.. 311. L. hypnorimi Stuxberg 

 (1875); Budde-Lnnd (1885), p. 254 (5-. v. foi- other references). 

 L. carsorium Budde-Lund (1885), p. 256. L. hypnorum 

 Michaelseu(1897), p. 132; Sars (1899), p. 157 ; VerhoefF(1901), 

 p. 40. L. melanocephala Koch (1901), p. 69. L. hypnorum 

 Koch (1901), p. 69; Richardson (1905), p. 686; Verhoeff (1918), 

 p. 114; Dahl(1916 & 1917). 



Length: 6 6 )nm., $ 7-5 mm. Breadth: S 2-5 mm., $ 3-5 mm. 



Surface smooth and shining. Head. Frontal margin slightly 



