20 



have been found and still less described, for they are all very 

 small and in most cases rare insects, the imagines of which 

 are found, at any rate in this country, as a rule only singly, 

 and their larvae live in hidden places. Only Dromius forms 

 an exception from this rule, as some of the larvae of this 

 genus will more easily be found, under bark of trees for in- 

 stance, and often together with imagines, but then it is 

 the only genus of the before mentioned group of which 

 the larvae have been described. It must therefore be con- 

 sidered all the more fortunate that we have succeeded in 

 finding the larvae of Demetrias, Lebia and Odacantha also, 

 through endeavours of the last few years in this country. At 

 the same time I will avail myself of this opportunity to 

 thank Mr. F. Meinert, Dr. phil., inspector of the Museum, 

 for the liberality with which the materiel of the Demetrias 

 larvae, belonging to the Museum, was placed at my disposal : 

 I hope to publish a later treatise about the larva, as I have 

 got much valuable information from the material and 

 found the Demetrias larva by a close examination of the 

 parts of the mouth, clypeus and ocelli to be so conformable 

 to Dromius, that I do not doubt that this larva and Dro- 

 mius belong to the same class and form a group by them- 

 selves: The Dromiini, Odacantha according to G angl baue r's 

 system is laid down as a distinct group: Odacanthini, which 

 certainly was correct as the clypeus with 6 teeth and seve- 

 ral other characters as well of the larva, as of the imago 

 show that it cannot be a true Dromiini, but it is more 

 like this group than like that of Lebiini. I have laid 

 Lebia down as a group by itself Lebiini, on account of the 

 ocelli and parts of mouth dittering so much from the two 

 above mentioned groups. 



In the present Avork 1 have confined myself to describing 

 Lebia and Odacantha only, and the reason why I have 

 chosen Lebia is partly, that 1 have in Lebia found the 

 number of ocelli to be only 4 on either side of the head, 

 which formerly was an unknown fact about the larvae of the 

 Carabidae. Formerly the number of 4 pairs of ocelli was con- 



