SUITABLE ANIMALS. 265 



which are marine as well as fluviatile; the Grey 

 Mullet ; the Blennies and Gobies ; the Wrasses ; 

 and the Eocklings, among fishes. Of Mollusca the 

 Aplysia, the Periwinkle, the Chitons, the Scallops, 

 and some of the sand-burrowing Bivalves, as Venus, 

 Ptillastra, &c. A specimen of Gastrochoena modio- 

 lina I kept many months, though under most trying 

 circumstances. Of Crustacea, Eurynome, Portunus 

 puber, Garcinus maenas, Ebalia, Gorystes, th& Pa- 

 guri, Porcellana platycheles, the Grangones, the 

 Palxmones. Of Annelides, Pectinaria, the Sabellee, 

 the Serpulm, Pontobdella muricata. Of Zoophytes, 

 the Madrepores, and all the Actiniada. 



The following are interesting, and may be preserved 

 for a considerable time, but are rather more preca- 

 rious. Among fishes, the Sea-scorpion (CottusJ ,- 

 the 15-spined Stickleback; the Butterfly Blenny ; 

 the Spotted Gunnel ; the Suckers ; the Pipe-fishes. 

 Among Mollusca, all the Nudibranch, and most of 

 the Tectibranch species; the Naticce, the GyprcBa, 

 the Purpura ; and many Bivalves ; the Gynthim, and 

 AscidicB. Among Crustacea, the Piste; the Por- 

 tuni; small specimens of the Lobster; Athanas 

 nitescens ; the Hippolytes ; Pandalus ; Gammarus ; 

 Idotea. Among Annelides, the Terebella ; Aphro- 

 dite aculeata ; and the Planarim. Of Echino- 

 derms, the Grihella, Pahnipes, Asterina, Asterias, 

 Echinus and Gucumaria. 



Procuring Specimens. ^^j far the most interesting 



mode of acquiring your stock, is the collection of 



them by your own personal research. But as this is 



not in every case practicable, we must have recourse to 



2 A 



