480 HISTORY OF ENTOMOLOGY. 
In this arrangement of the tribes, as he calls them, of 
Mandibulata, Mr. MacLeay sets out from the Coleoptera, 
which he distributes, according to the supposed typical 
forms of their larva?, into five minor groups, sufficiently 
noticed on a former occasion a . From this tribe or Order 
he proposes to pass by Alractocerns to the osculant Order 
Strepsiptera, and from thence by Myrmecodes and the 
Ants to the Hymenoptcra. From hence he next pro- 
ceeds to his Tr i diopter a ; in which, as we have seen a , 
lie places not only Phryganca L., but also Tenthredo L. 
and Perla Geoffr., making his transit by Sircx L. ; form- 
ing an osculant Order which he der\om\r\aX.esBombop>tera. 
From this his way to the Neuroptera is by the Perlides, 
with Sialis as an osculant Order under the name of Me- 
galoptera : he enters by Chauliodes, and leaves it by 
Panorpa or Raphidia by means of Borcus, forming also 
an osculant Order (Raphioplera) for the Orlhoptera ; 
which he enters by Phasma, Mantis, &c, and leaves by 
Gryllus, entering the Coleoptera again by the osculant 
Order Dermaptera formed of Forjicida L. : and thus re- 
turning to the point from which he set out b . He has 
not, however, made this return of the series into itself 
so clear in each order, excepting in the Orthoptcra, as 
he has done in the whole Class or Sub-class. Thus in 
the Coleoptera there appears no particular affinity be- 
tween the Predaceous and Vesicant beetles, his first and 
fifth forms c , or his Chilopodimorphous Coleoptera, and 
his Thysanurimorphous. 
To enter fully into his doctrine of Analogies would 
lead us into a very wide field, and occupy a larger space 
a See above, p. 382. b Hor. Entomohg. 420—. 
c Ibid. 422. 
