CATALOGUE OF BRITISH CEUSTACEA. 
125 
Caligus imbricatus, Risso, Crust. Nice. p. 162, t. 3, f. 13. 
Caligus Smitbii, Lam. Hist. An. sans Vert. v. p. 210. 
Otrophesa iinbricata, Risso, Hist. Nat. Eur. Mer. v. p. 136. 
a, b. Devon (Exraoutb), parasitic on Lamna cornubica. Presented 
by T. Smith, Esq. 
Fam. II. DICHELESTH1D/E. 
Lem aei formes, Latr. Fam. Nat. p. 306. 
Dichelestium, Haan, Mem. Apt. p. 125 (1804). 
1. DICHELESTHIUM. 
Caligus, sp. M. Edw. Crust, iii. p. 483. 
1. Dichelesthium oblonguji. Sturgeon-Sucker. 
Dichelesthium sturionis, Hermann, Mem. Apt. p. 125, t. 5, f. 7, 8 : 
Desm. Cons. p. 337, t. 50, f. 6 ; Kroyer, Nat. Tidslc. i. p. 299, t. 
2, f. 5 ; Guerin, Icon. t. 35, f. 10 ; Rathke. Nov. Act. Nat. Cur. 
xix. p. 127, t. 17, f. 1 — 17; M. Edw. Crust, iii. p. 485, t. 39, 1'. 
4 ; Cuv. R. A. (Crock.) t. 79, f. 2; Thomp. Rep. Inv. Irel. 
Caligus oblongus, Abildg. Sels/c. Skrift. iii. p. 52, t. 5, f. 4 — 11. 
South of Ireland. (Thompson). 
Fam. III. ERGASIL1D-E. 
Ergasilidae, Baird, Brit. Ent. p. 299. 
Ergasiliens, M. Edw. Crust, iii. p. 476. 
Nicotlioidae, Dana, Proc. Amer. Acad. Sci. Art. 
Lernaeis forsan adnumeranda, Haan, Faun. Jap. Exp. 16. 
1. NICOTHOE. 
Nicothoe, Aud. §■ Edw. 
Nicolhoa, M. Edw. Crust, iii. p. 480 (1840). 
