ON THE LAMELLICORNES. 535 



connect the two families. Its general appearance is that of a 

 Prion us, with short trigonate advanced mandibles, and mode- 

 rately long antennae ; but the latter, on a closer examination, 

 are decidedly those of one of the Lucanidse. The basal joint 

 is scarcely longer than the third, and a slight elbowing of 

 the antennas is observed at the second joint. The last three 

 joints are not longer than the preceding joints, and very 

 sliglitly produced on the inside, giving these organs the ap- 

 pearance of being almost setaceous. The joints of the tarsi 

 are cylindric, but the insect is heteromerous ? ? ? 



" Having had the good fortune, in conjunction with Mr. 

 G. R. Gray, to discover a second specimen of this beautifully 

 osculant insect in the Collection of J. G. Children, Esq., I 

 consider myself happy in having been enabled to examine and 

 figure that gentleman's specimen, although it is to be re- 

 gretted, that the structure of the internal parts of the mouth 

 could not be rigorously investigated without injury to the 

 insect. 



" In addition to and correction of the characters mentioned 

 in the preceding note, it will be observed that from the casual 

 examination which I was able to bestow upon the Rafflesian 

 insect, some slight errors have crept into my description of 

 the antennae ; these I have been very careful to correct in the 

 delineation of those organs in the figure of the insect, an 

 examination of which will at once convince the student that 

 it is legitimately lucanideous — notwithstanding it may be 

 urged that the slight internal productions of the three termi- 

 nal joints, is but an incipient attempt at the more perfect 

 lateral developement observable in many of the Prionidse. 

 It must also be borne in mind that Mr. Children's specimen 

 is a female, and we can but slightly conjecture the structure 

 of the male antennae or mandibles. 



" In the formation of the Trophi there is not any very ma- 

 terial difference existing between this insect and certain female 



