438 ON THE TRIBES ' 



— to the curious partiality which certain carnivorous in- 

 sects, such as Ammophila, Cicindela, the Apterous Lo- 

 custs of Africa, and the Myrmeleon, all possess towards a 

 sandy soil, — to the gregarious omnivorous disposition of 

 Termites, Blattcz, Ants and CoccineU(e, — and to the caudal 

 appendages which give such a peculiar aspect to an Ichneu- 

 mon, Gryllus, Per la, Tenthredo and Panorpa. The most 

 satisfactory point, however, to observe, is the relation of ana- 

 logy which connects Bees with Phryganea, and consequent- 

 ly with Lepidoptera. In this manner we perceive the real 

 value of that similar structure of the maxillae, from which 

 M. Latreille has conceived an affinity to exist between 

 two insects so different in general structure as Melipona 

 and Papilio. If such be a few of the analogies brought 

 immediately into view by an approximation to the truth 

 so imperfect as the foregoing detail of affinities, what in- 

 finite order and beauty may we not expect on the deve- 

 lopement of the Natural System ! 



The relations between Panorpa and Myrmeleon, be- 

 tween the Mutill(E and the Ichneumon-Wasps of Latreille, 

 between Silpha and Cassida, Gryllus and certain Acridina, 

 all show that the opposite points of the orders approach 

 each other as usual*. With this consideration premised, 

 we may now venture to exhibit the preceding details of 

 affinity, as they may be collected into one summary view. 

 The chief difficulty in this attempt is to discover the exact 

 points of the Coleopterous circle, which communicate 

 with the contiguous orders of Hymenoplera and Ortho- 

 ptera. I could therefore wish this part of the figure to 

 be regarded with distrust. 



* It is perhaps by the circumstance of Anopluriform larva: meeting 

 the opposite point of the circle, and resembling Chiiognathiform larv«, 



