CATALOGUE OF BRITISH CRUSTACEA. 
64 
Oniscus longicornis, Sowerby, Brit. Misc. t. 19. 
Leachia lacertosa, Johnston , Edin. Phil. Journ. xiii. p. 220. 
Astacilla longicornis, Fleming , Edin. Enc. vii. p. 502 ; Johnston , 
Loud. Mag. Nat. Hist. viii. p. 494, f. 44, adult, ix. p. 80, f. 15, 
young. 
a — e. Cullercoats, Northumberland. Presented by Dr. Clarke, of 
Ipswich. 
/. Firth of Forth. Presented by Henry Goodsir, Esq., Surg., R.N. 
2. Arcturus intermedius. 
Leachia intermedia, Goodsir, Edin. New Phil. Journ. xxxi. p. 
309, t. 6, f. 1. 
a. Firth of Forth. Presented by Henry Goodsir, Esq., Surg., R.N. 
3. Arcturus gracilis. Goodsir’s Arcturus. 
Leachia gracilis, Goodsir, Edin. New Phil. Journ. xxxi. p. 310, t. 
6, f. 4. 
a. Firth of Forth. Presented by Henry Goodsir, Esq., Surg., R.N. 
Fam. II. IDOTEADJ3. 
Idoteadae, pt. Leach, Sam. Ent. U. Comp. p. 106. 
Antliuradae, pt. Leach, Sam. Ent. U. Comp. p. 107. 
Idoteides ordinaires, M. Edw. Crust, iii. p. 124. 
Sphaeromides, I. pt. Latr. Fam. Nat. p. 294. 
1. IDOTEA. 
Idotea, Latr. Hist. Nat. Crust, vi. p. 360; M. Edw. Crust, iii. p. 
125. 
Cymothoa, pt., Fabr. Ent. Syst. ii. 
Idotea, pt. Fabr. Ent. Syst. Suppl. p. 302 (1798). 
Rhaetia, pt. Leach, MSS. 
Stenosoma, pt. Leach, Ed. Enc. vii. p. 304 (hecticus). 
Idotea, pt. Leach, Ed. Enc. vii. p. 404 (entomon). 
Saduria, pt. Leach, MSS. (“Siduria”) ; M. Ediv. Crust, iii. p. 126. 
Leptosoma, Risso, Eur. Mer. v. p. 107. 
Zenobia, Risso, Eur. Mer. v. 1 1 0. 
