CATALOGUE OF BRITISH CRUSTACEA. 
Inachus Dorsettensis, Leach. Enc. Brit. Suppl. p. 416 ; Maine. 
Brit. t. xxii. f. 1 — 6 ; Samouelle, Ent. U. Comp. p. 90 ; Bell, 
Brit. Crust, p. 13. 
British and Irish Coasts. 
a — d.$.e — h. %. Devon. From the collection of Col. Montagu. 
j. Cornwall. Presented by D. W. Mitchell, Esq. 
k. Cornwall. Presented by W. P. Cocks, Esq. 
2. Inachus Dorhynchus. Leach’s Spider-Crab. 
Inachus Dorynchus, Leach , Ed. Enc. vii. p. 431 ; Med. Pod. Brit. 
t. xxii. f. 7, 8; M. Edw. Crust, p. 288 ; Couch, Cornish Fauna , 
p. 65; Bell, Brit. Crust, p. 16. 
British and Irish Coasts. 
a—f. Devon. From the collection of Dr. Leach. 
3. Inachus leptochirus. Slender-armed Spider-Crab. 
Inachus leptochirus, Leach, Malac. Brit. t. xxii. B. ; Bell, Brit. 
Crust, p. 18. 
Inachus leptorynchus, Desm. Cons. p. 152. 
Inachus leptorinchus, M. Edw. Crust, i. p. 289. 
British and Irish Coasts (rare). 
a — c. W. Coast of Devon. From the collection of Mr. Cranch. 
Fam. II. MAIADxE. 
Maiadse, Bell, Brit. Crust, p. 21. 
Maiadae, pt. Leach, Sam. Ent. U. Comp. p. 88. 
Maiens, M. Edw. Crust, i. p. 295. 
1. ARCTOPSIS. 
Arctopsis (lanata), Lam. Si/st. An. sans Vert. p. 155 (1801). 
Pisa, Leach, Linn. Trans, xi. p. 327 (1814 — 1815). 
Pisa, pt. Leach, Edin. Enc. vii. 
Blastus, pt. Leach, Edin. Enc. vii. 
Pisa (subg. Pisa), Haan, Faun. Jap. p. 85. 
B 3 
