CnUSTACEA. 



131 



AMPniPODA. 



Group. Division. Subdivision. Tribe. Family. Subfamily. 



Saltatoria=Orchestii(lse 



Nor- 



malia. "a rina. 



r 



Natatoria= Gammaridte 



Vacantia. "^ 



Stegocephalklcs 

 Lysianassidcs 



Ampeliscides 

 Phoxides 



Gamma- ^ 



< 



L 



Gammaridcs 



Domicola •{ 

 I 

 I 



Corophiidae 



t 



Podocerides 



Coropliiides 



Abcr- S 



\^ Chcluridte 



TT • S Hyperiidfe 



HyiiermaJ Phronimidaj 



. . . Dulichiidse 



Caprellidse 



r-^"'!'*- 1 Cyamid£e 



Talitras, Orchcstia, Al- 

 lorcliestcs, Nicrea. 



Montagua, Danaia, 



Lysianassa, Callisoma, 

 Auonyx. 



Ampelisca. 



Plioxus, Sulcator, Ki-oi- 

 yira,Wcstwoodia,Gray- 

 ia, iVIonoculodes, Am- 

 philocliiis, Darwiuia, 

 Urotlioe, Lilgeborgia, 

 Phajdra, Istea, Iphime- 

 dia, Otus, Acanthono- 

 tus. 



Gammaras, Dexamine, 

 Atj-lus, Phenisa, Cal- 

 liope, Eusii-us, Leuco- 

 tlioe, Aora, Stimpsonia, 

 Protomedia, Bathypo- 

 reia, Niphargus, Cran- 

 gonyx, Gammarella, 

 Melita, MiBra, Mega- 

 lutera, Eurysthcus, A- 

 matilia, &c. 



Podocenis, C)Ttopliium, 

 Amphitoe, Sunamphi- 

 toe, Cerapus, Sipliouo- 

 ccetus, &c. 



Corophium,Drj'opc,Cra- 

 tippus. 



Chelura. 



Hyperia, Lestrigonus. 



Phi'onima. 



Dulichia. 



Proto? ProtelIa,CaprelIa. 



Cyamus. 



Tlie tliree principal divisions of tlie body they call Cephalon, Pereion, 

 and Pleon ; for tlie parts of the mouth they propose the new name 

 " Siagonopods," a term, however, which seems to us unnecessary ; the 

 appendages of the Pereion are with them pereiojiods, and those of 

 the Pleon, pleopods, in addition to which they give to the three 

 posterior pairs the designation of 1st, 2nd, and 3rd uropods. The 

 internal anatomy of the Amphipoda does not come within the scope 

 of their work, but in addition to an excellent outline slvetch of each 

 species, they give magnified representations of the more charac- 

 teristic organs. On the whole the work will be a most valuable 

 contribution to our knowledge of the British Pauna ; but we must 

 defer any farther consideration of it till it is completed. 



Tlie volume for which we are indebted to the learned Professor 

 of Louvain is rather a series of monographs than a complete work 

 on the Ci'ustacea of Belgium. The first chapters are devoted to the 



