52 



Introductory View of the 



forcing open a small circular lid at one end of the cocoon {Ji), 

 The insects, as soon as they came forth, were active and ready 

 for flight. 



It is of diminutive size, the 

 females not exceeding two lines 

 in length, the males some- 

 thing less; the antennae fili- 

 form, longer than the body, 

 black; the legs rufous, some 

 have the thighs of the hinder 

 pair marked with a black spot; 

 the head, thorax, and body, of 

 a deep black, except in the 

 females, which are marked 

 with white on the anterior part 

 of the abdomen beneath ; the 

 abdomen is ovate and subses- 

 sile; the wings are a little 

 longer than the body, rounded 

 at their ends, and the anterior 

 pair marked on their exterior 

 margin, near the posterior 

 angle, with a black spot. 



I send for your examination 

 some of the parcels of cocoons, 

 and many of the insects ; and I hope you will indulge your 

 readers with a magnified figure of this interesting little British 

 insect, and of the cocoons in their collective form, as well 

 as in magnified detail. [Jig, 9.) I am, Sir, &c. 



Clapham, July 18. 1829. T. H, 



a. Larva of the natural size ; b, magnified, 

 c. Imago of the natural size ; d, magnified. 

 e. Perfect insect natural size ; /, magnified, 

 g. Cocoon natural size ; h, magnified. 



Art. XIII. An Introductory View of the Linnean System of Plants. 

 By Miss Kent, Authoress of Flora Domestica, Sylvan Sketches, 

 &c. 



(Continued from Vol. II. p. 164.) 



Before I proceed to speak of the beautiful class Hexan- 

 dria^ it may be well to say a few words of the different species 

 of calyx. Linnaeus enumerated seven ; of which, by far the 

 most common is the perianth, which grows immediately be- 

 neath the flower; the other six are the spatha (a slice, Gr.) 

 involiicrum (a wrapper, Lat,), amentum (a bond, Gr.), gluma 

 (a husk,.L«^.), volva (volvere, to wrap, Lat.), and [calyptra 

 (a cover, Crr.). The volva and calyptra belong exclusively to 

 plants of the twenty-fourth class, of which we shall speak in 



