Oh. VI.] MABINE ANIMALS OF KE-LUNG. 97 



don and Therapon), others yellow, green, red, and various 

 bright colours, and of forms equally various; but unfor- 

 tunately neither spirit nor glycerine succeeded in preserving 

 their tints. The rocks, where washed by spray, were 

 blackened by the swarms of Ligiae running nimbly about, 

 exhibiting a bluish metallic tint, which glanced upon 

 their backs in the sunlight. Beautiful purple Echini occu- 

 pied the hollow places in the sandstone ; and great black 

 Holothurise, of the kind used for Trepang, lay scattered 

 about in many places, and these, when touched, threw out a 

 quantity of white tenacious threads, which adhered like glue 

 to the hand. The slug-like Peronia was not imcommon, 

 usually found crawling upon the rocks at high water, being 

 an animal that is satisfied with an occasional moistening of 

 the surface. "When I kept these animals alive they proved 

 very erratic, and would never remain in the vessel, but im- 

 mediately crawled out ; and I found them from time to time 

 in aU parts of my cabin, even some days after I had lost 

 them. I was therefore somewhat surprised, on a subsequent 

 occasion, to find Peronias on' the coast of Borneo, on the 

 under side of stones which were immersed in the water. The 

 Peronia is greenish-brown in colour, without dorsal branchiae, 

 or mantle-tentacles, as in the Nudibranchs, but have two 

 snail-like retractile tentacles on the head, with eyes at their 

 points, and the whole mantle is covered with papUlse, having 

 something of the form of fleurs-de-lis. After the gale which 

 detained us in the harbour, the low cay, called Bush Island, 

 was covered with a fleet of little Velellse and Physalise, which 

 had been stranded by the wind. This island, too, produced 

 a number of beautiful Anemones, botryUiform Tunicata, 

 &c. ; but the most remarkable animals there met with were 

 certain Tectibranchs, as they are termed, ia which the shell 



