CATALOGUE OF BRITISH CRUSTACEA. 125 



Caligus imbricatus, Risso, Crust. Nice. p. 162, t. 3, f. 13. 

 Caligus Smithii, Lam. Hist. An. sans Vert. v. p. 210. 

 Otrophesa imbricata, Risso, Hist. Nat. Eur. Mer. v. p. 136. 



, b. Devon (Exmouth), parasitic on Lainna covnubica. Presented 

 by T. Smith, Esq. 



FAM. II. DICHELESTHID^. 



Lernseiformes, Latr. Fam. Nat. p. 306. 

 Dichelestium, Haan, Mem. Apt. p. 125 (1804). 



1. DICHELESTHIUM. 



Caligus, sp. M. Edw. Crust, iii. p. 483. 



1. DICHELESTHIUM OBLONGUM. Sturgeon-Sucker. 



Dichelesthium sturionis, Hermann, Mem. Apt. p. 125, t. 5, t'. 7. s 



Desm. Cons. p. 337, t. 50, f. 6 ; Kroyer, Nat. Tidsk. i. p. 29i>, t. 



2, f. 5 ; Guerin, Icon. t. 35, f. 10 ; Rathke. Nov. Act. Nat. Cur. 



xix. p. 127, t. 17, f. 117; 717. Edw. Crust, iii. p. 485, t. 39, f. 



4 ; Cuv. R. A. (Croch.) t. 79, f. 2; Thomp. Rep. Inv. Irel. 

 Caligus oblongus, Abildg. Selsk. Shrift, iii. p. 52, t. 5, f. 4 11. 



South of Ireland. (Thompson). 



FAM. III. ERGASIL1D-E. 



Ergasilida?, Baird, Brit. Ent. p. 299. 

 Ergasiliens, M. Edw. Crust, iii. p. 476. 

 Nicothoidae, Dana, Proc. Amer. Acad. Sci. fy Art. 

 Lernaeis forsan adnumeraiida, Haan, Faun. Jap. Exp. 16. 



1. NICOTHOE. 



Nicothoe, And. $ Edw. 



Nicolhoa, M. Edw. Crust, iii. p. 480 (1840). 



M 3 



