STATES OF INSECTS. (Larva.) 165 
body elongate, narrow, convex, compressed, taper- 
ing towards the tail; tail with natatorious laminz. 
Ex. Dytiscus, Agrion?. 
14, Branchiopodiform. Carnivorous ?; aquatic; apod ; 
antenniferous: head distinct: body transparent, 
flexile, furnished with a respiratory tube just above 
the tail. Ex. Culex”. 
15. Limaciform. Herbivorous; apod, or with very short 
legs: body ovate or obovate, slimy. Ex. Apoda, 
Dolerus ? Cerasi. 
The above are the principal forms that appear to me 
Primary (though some doubt may rest upon the ninth 
and tenth): and probably others will hereafter be disco- 
vered, since at present our knowledge of the larvee of 
most of the orders is very limited. And now having given 
you this generalization of them, as far as they are known 
to me, I shall next, in a slight survey of those of the dif- 
ferent orders, lay before you what I have further to ob- 
serve upon this subject. 
Coleoptera. The Anopluriform coleopterous larve, 
according to Mr. W. MacLeay’s view of them, include 
both those of Coccinella L., Chrysomela L., and Cas- 
sida L.; but this appears to me to admit of further con- 
sideration. With regard to the two former—those of 
Coccinella are carnivorous, those of Chrysomela herbi- 
vorous; the first is also usually more flat and depressed. 
As to the latter, Cassida‘, it seems to me to belong to a 
peculiar type, distinguished not only by its radiated mar- 
gin, but by the remarkable deflected anal fork on which it 
carries its excrement. At present I know no analogous 
2 Prate XVIII. Fic. 5. b Plate XIX. Fie. 9. 
© Prats XVIIL Fie. 2. 
