affecting the Potato-crops. 



73 



To render the history of this species more complete, the female 

 and pupa are represented in our plate U ; figs. 1 and 3, magni- 

 fied ; figs. 2 and 4, the natural sizes. 



5. Schizoneura lanigera, Hausen? belongs to a group which 

 has been separated from the genus Aphis in consequence of the 

 different neuration of the wings, &c. The winged specimens are 

 only accidental inhabitants of the potato, and may frequently be 

 observed on almost every plant in the garden. As a proof of the 

 great fecundity of these insects, I put three from the potatoes 

 into a quill, and in 6 hours they had produced 43 young ones. 



At the same time the natural enemies of the Aphides were not 

 inactive : the lady-birds (CoccinellcB 1 -punctata and C. dispar*) 

 were laying their eggs, which soon hatched, and the little black 

 larvae made great havoc, as well as their parents, amongst the 

 helpless communities: the beautiful 2- winged flies {Scceva hat- 

 teata\ and Cheilosia twniata %) were also depositing their eggs 

 beneath the potato-leaves, where they soon hatched, and the mag- 

 gots commenced feeding on their Aphis prey. These eggs are 

 white, oval, and beautifully granulated, whilst those of the lady- 

 birds are smooth, and of an orange or buff colour. 



There are likewise some minute bugs and their larvae, which 

 are exceedingly serviceable in destroying the Aphides ; and there 

 seems to be scarcely a plant or tree where they may not be found ; 

 the perfect insects inhabiting the flowers, and the immature ones 

 running about in search of the Aphides, which they transfix with 

 their sharp rostrum. 



These bugs are included in the Order Hemiptera, the 

 Family Coreid^e, and the Genus Hylophila or Anthocoris. 

 The 1st species is called 



6. H. Nemorum, Linn, : it is only \\ line long : fig. 5; 6, the 

 natural size. It is black and shining, the head is trigonate, 

 narrowed before, with a 3-jointed rostrum bent under the breast ; 

 the 2 globose eyes are prominent, and the 2 minute ocelli at 

 the base of the crown are remote : the 2 horns are half as long as 

 the body, straight, 4 -jointed and black; 1st joint short, 2nd the 

 longest, bright ochreous, the tip black ; 3rd and 4th of equal 

 length, the former ochreous at the base, the latter conical at the 

 apex : thorax triangular, truncated before with two transverse 

 channels : scutel triangular, acute, and not small : elytra elliptical, 

 lying flat on the back, and extending beyond the abdomen, pale 

 ochreous, with a spot at the suture, a bar or spot on the disc of 

 each, and the oblique margin all fuscous ; the terminal membrane 

 is white, with a fuscous spot on the disc and a larger one at the 



* Jour, of Royal Agric. Soc, vol. iii. p. 57, pi. C, figs. 15 and 16. 



t Ibid., vol. iii. p. 66. 



% Curtis's Guide, Genus 1241, No. 3. 



