338 APPENDIX. 



varieties of Apate; Anthrihus, Cossonus, Lajuia, 

 Sphinx pungens, and a large Phasma, 



No place could be more convenient for the ob- 

 seivation of the Mollusca and Radiata than Cape 

 Venu3. At a few hundred paces from the shore is 

 a coral reef, which at low water is completely dry. 

 In the shoal water, between the reef and the shore, 

 is found the greatest variety of the more brittle 

 kinds of coral, and among their sometimes thick 

 bushes, mollusca and ecbinodermes lie concealed. 

 The rapid movements of a small Strombusy which, 

 when taken, beat about it with its shell, formed like 

 a thin plate of horn, and armed with sharp teeth, 

 were very curious. On breaking the stone which is 

 formed by fragments of coral, a Sternaspis was found 

 burrowing in the interior. Seven classes of Holothu- 

 ria were examined ; three belonged to the species of 

 Holothuria, called by Lamarck Fistularia^ but which 

 name had already been given by Linnseus to the 

 tobacco-pipe fish ; the fourth was a species newly 

 discovered, and to which we appropriated the name 

 of Odontopyga, because the fundament is armed 

 with five calcareous teeth ; the belly is furnished 

 with small tubes, and the back covered with 

 bumps. Two more belong to the species Thyone ; 

 and the seventh kind of Holothuria ought, pro- 

 perly speaking, to form a class apart, not having 

 tubular feet, but adhering, by means of their sharp 

 skin, to extraneous objects, on which account they 

 might be called Suiapfa; their feelers are fringed 



