APPENDIX. 47 



died, the only noticeable change was the unusual diyness of the 

 tissues. 



Carabus auratus. An experiment with an individual, caught on 

 May 27th, gave the length of life at fourteen days ; this is 

 probably below the average, since the beetles are found, in the wild 

 state, from the end of May until the beginning of July. 



Lucanus cervus. Captured individuals, kept in confinement, and 

 fed on a solution of sugar, never lived longer than fourteen days, 

 and as a rule not so long. The beetles appear in June and July, 

 and certainly cannot live much over a month. As is the case with 

 many beetles appearing during certain months, the length of the 

 individual life is shorter than the period over which they are found. 

 Accurate information, especially as to any difference between the 

 lengths of life in the sexes, is not obtainable. 



Isolated accounts of remarkably long lives among beetles are to 

 be found scattered throughout the literature of the subject. Dr. 

 Hagen, of Cambridge, Mass., has been kind enough to draw my 

 attention to these, and to send me some observations of his own. 



Cerambyx heros. One individual lived in confinement from 

 August until the following year 1 . 



Saperda carckarias. An individual lived from the 5th of July 

 until the 24th of July of the next year l . 



Buprestis splendens. A living individual was removed from a 

 desk which had stood in a London counting-house for thirty years ; 

 from the condition of the wood it was evident that the larva had 

 been in it before the desk was made 1 . 



JBlaps mortisaga. One individual lived three months, and two 

 others three years. 



Blaps fatidica. One individual which was left in a box and for- 

 gotten, was found alive when the box was opened six years after- 

 wards. 



Slaps obtusa. One lived a year and a half in confinement. 



Eleodes grandis and E. dentipes. Eight of these beetles from 

 California were kept in confinement and without food for two years 

 by Dr. Gissler, of Brooklyn ; they were then sent to Dr. Hagen 

 who kept them another year. 



Goliatkus cacicus. One individual lived in a hot-house for five 



months. 



1 'Entomolog. Mag.,' vol. i. p. 527, 1823. 



