ARCTURUS LONGICORNIS. 



ISOPODA. 

 NORMALIA. 



365 



ARCTURID^E. 



ARCTURUS LONGICORNIS. 



Specific cJtaracter. Moderately slender. Four anterior segments of the 

 body strongly tuberculated. Upper antennae reaching to the tip of the 

 second joint of the inferior. Flagellum longer than the two preceding joints 

 together. Second, third, and fourth segments dilated over the place of in- 

 sertion of the legs. 



Length of the body, one inch. 



Oniscus lonyicornis. SOWERBY, Brit. Misc. t. 19. 



Arcturus lonyicornis. WESTWOOD, in Trans. Ent. Soc. Lond. 1, 72, t. 10. 

 GUERIN MKNKV. Icon. R. An. Crust, t. 31, f. 2. 

 MILNE EDWARDS, Crust, iii. p. 124. WHITE, Cat. 

 Brit. Crust. Brit. Mus. p. 63. Pop. Hist. Brit. 

 Crust, p. 221, pi. xii. f. 1. GOSSE, Man. Mar. 

 Zool. 1, fig. 249. 



Astacilla lonyicornis. FLEMING, Edin. Enc. vii. p. 502. JOHNSTON, in Lou- 

 don's Mag. Nat. Hist. viii. p. 494, f. 44, adult ; 

 ix. p. 80, f. 15, young. DALYELL, Powers of 

 Creator, 1, p. 226, pi. Ixiii. figs. 1 4. 



Leachia lacvrtosa. JOHNSTON, Edinb. Phil. Journ. xiii. p. 220. 



