140 ON SYSTEMATIC ZOOLOGY. 
(190.) In further reference to this table, we may 
give Mr. Kirby’s elucidation of many of the groups. 
The Apoda terrestria (a) are all Annelida, or red-blooded 
worms ; (b) are larve ; (c) various Aptera, and the 
bed bug ; (d) Nymphon Fab. ; (e) Scorpio ; (f) Spiders, 
phalangers, and mites; (g) Julus; (h) Seolopendra ; 
(i) Annelida: (k) This section is divided by the author 
into thirteen tribes ; (7) Lepidoptera ; (m) Apis, Bom- 
bus, &c.; (n) Vespide ; (0) Andrena, Halictus, No- 
mada, &c.; (p) Crabro, Philanthus, Cerceris, &c. ; 
(q) Tenthredo L.? Ichneumon, &c.; (7) Trichoptera 
K. ; (s) Pimpla manifestator, and other Ichneumonide, 
with a long ovipositor. Mr. Kirby justly observes, that 
our great countrymen followed Swammerdam in the 
unnatural separation of those diptera whose metamor- 
phosis is coarctate from the rest ; and in associating with 
them the Ichneumones minuti, whose metamorphosis is 
really different. Into this error both were led by sys- 
tem, or rather by founding their system upon one con- 
sideration, to the exclusion of others. 
(191.) The system of Linneus will demandamuch more 
ample exposition than any of those coming within our 
present notice ; for not only did the classification of the 
animal kingdom, by this illustrious philosopher, super- 
sede for nearly a century allothers, but it developed a 
simplicity and a grandeur of generalisation which was 
admirably suited to the existing state of science. The 
views of natural groups which it unfolded, were, in 
most cases, superior to those of all others ; and, in con- 
junction with that of Aristotle, may be said to have 
indicated the large masses of which the true temple of 
nature is composed. We shall first lay before our readers 
the contents of each of the great classes into which the 
illustrious Swede divides the animal kingdom, and then 
subjoin to each such observations as are suggested by 
their merits or defects. The edition of the Systema 
Nature, which we shall select for our guide on this 
occasion, is the thirteenth, “‘ Vindobonae, 1767.” 
(192.) The primary divisions of the Linnean ar- 
rangement of animals ave six, namely: 1. Mammalia, 
