APPENDIX. 361 



Our passage through the Chinese Sea was rapid ; 

 and as we had constantly stormy weather in the 

 Indian Ocean, we had no opportunities of observing 

 marine animals. In the vicinity of the Cape, we 

 caught some Salpte, Physalioe, and Velellse ; but 

 in the Northern Atlantic, after reaching the region 

 of the Sargassum nata?is, daily opportunities for inte- 

 resting observations presented themselves. From 

 the point at which the floating sea-weed was first 

 noticed, (eighteen degrees north latitude, and 

 about thirty degrees of longitude west of Green- 

 wich,) to the coast of England, forty-three kinds of 

 animals were observed, not noticed on our outward 

 voyage. We were able to make a very exact exa- 

 mination of the whole system of the Beroe punctata. 

 Three new varieties of Medusa were discovered, and 

 an animal {Rat aria N.) between Veklla and Purpita : 

 it has the flat form of the latter, but is provided with 

 a sail, which it can draw in at will. We also caught 

 the animal which Le Sueur has called Stephaiiomia 

 uvafurmis. Lastly, we had the good fortune to procure 

 a specimen of an animal which appears to form a 

 link between the Salpa and Fyrosoma. This species 

 (called Anchinia) consists of a number of animalculse 

 of the Salpa form, which, by means of a stalk, are 

 attached to a common body, all of them being tuined 

 to the same side. 



In the course of less than three years, ^i^O kinds 



VOL. II. R 



