APPENDIX. 541 



" and flattish below, but armed at the extremity with 

 " two sharp horny appendages, curved upwards." — 

 Macleay's larva was found, together with the perfect 

 insect, in the solid wood of an old oak in Hampshire, 

 by Mr. Samouelle. 



The above description applies to our larva, except 

 that its colour is light yellowish brown, and the feet 

 equal ; and, in addition to the horny appendages at the 

 extremity, the two caudal processes and the posterior 

 margin of the last or anal segment, are armed with 

 similar sharp horny spines. 



Length 0.45 in. 



Found in dried Pine. 



Order ORTHOPTERA. 



Acridium sulphureum, Pal. de Beauv. 



Palis, de Beauv. Ins., rec. en Afr. et Am. p. 145. 



Orthopt. pi. 4. f. 2. 

 Palisot du Beauvais' insect is from Virginia. 



Order HYMENOPTERA. 



Formica herculeana, Linn. 



Var. thorace nigro, Shuck. M. S. 



Linn. Faun. Suec. p. 426. No. 1720. 



My friend Mr. Shuckard, who is intimately ac- 

 quainted with this Order, and examined this species at 

 my request, observes : — " The identity of Captain 

 " Back's species with the F. herculeana of Linnaeus, is 

 " interesting, from its being the first proof I am ac- 

 " quainted with, of the same species of hymenopterous 

 " insect inhabiting both the European and American 

 " continents. These ants are, indeed, smaller than the 

 " European species ; but climate is well known to affect 

 " developments." 



