COLLECTION OF ARTICULATED ANIMALS. 499 



sented all the species which he collected in the 

 Red Sea, and the series of the lumbrici, or com- 

 mon worms, upon which he has written an ex- 

 cellent treatise ; and lastly, the collection lately 

 brought by him from the Italian seas. M. Dor- 

 bigny has sent us a great number of species from 

 La Rochelle. 



M. de Lamarck divides the annelides into three 

 orders : the first, that of the apoda, comprehends 

 the family of the hirudinece, to which belongs 

 the leech, and that of the echiurece. The second 

 order, or that of the antennaice, comprehends 

 four families, the aphroditce, the nereidece, the 

 eunicece and the amphinomi; among them we 

 may remark the aphroditce, whose bodies are fur- 

 nished on each side with numerous hairs with 

 metallic reflections displaying all the colours of 

 the rainbow. The animals of this order live in 

 the sea ; their body is not protected by a tube, 

 and on this account they can be preserved only 

 in spirits. They have been placed in the lower 

 part of the cases which contain the crustaceae, 

 by the side of the worms ; a still more nu- 

 merous series of them is to be seen in the cabi- 

 net of comparative anatomy. The animals of the 

 third order, the sedentaria, have their body co- 

 vered with a tube which is generally calcareous. 

 These tubes are placed next to the shells in the 



32. 



