INTRODUCTORY REMARKS. ' 1q 



noptera. His genera in the latter are Crahro (k), 

 Urocerus{l), Tenthredo, Cynips{m), Diplalepsis{n), 

 Eu!ophus(o), Ichneumon (p), Fespa(q), u4pis, and 

 Formica. In all these his generic characters are 

 drawn from the mouth (os), stemmata, antennce, 

 wings, abdomen, and aculeus, with the addition 

 of lingua, glahrities, and hirsut'tes in Vespa and 

 j4pis. His families are taken from the number of 

 articulations of the antenna (r), and pubescence 

 and hirsuties (s). The monotony of his generic 

 characters is rather tedious, and his constant ad- 

 herence to differences in the antennas for them 

 leads him into many errors. He has often fallen 

 into the very faults that he objects to Linneus {t) ; 

 for the characters of his genera are not sufficiently 

 descriminative, he unites those insects which nature 

 has separated, and separates those which she has 

 united. For instance, the only distinction be- 

 tween ^pis and T^espa, which he notices, is pu- 

 bescence (ti) ; thus placing a considerable family 

 of genuine Apes in the latter genus, which like- 

 wise includes Chrysis. Again, he separates Ci'abro 

 from Tenthredo, and Euhphus from Ichneiunon, 

 merely on account of differences in the aniennay 



(U) Tenthredo, Lin. (/) Sircx, Lin. (?//) Cynips and 



Ichneumon, Lin. («) Cynips, Lin. (o) Ichneumon, Lin. 



(p) Ichneumon, Sphex, Lin. {q) Fespa, Chrysis, Apis, Lin, 



(j) Tenthredo, Cynips. {s) Apis. (/) Tom. 1. Prel. 



Disc, p. xiv. {u) Fespa corpus glabruni. Apis corpus 



villosum. All tlie other characters are verbatim the same. 



c 2 which 



