210 



INSECTS AT HOME. 



The colour of the Beetle is bright polished-blue above, 

 sometimes taking a deep-green hue, and there is a reddish 

 patch below at the apex of the body. The thorax is rather 

 convex and thickly punctured, and on each elytron there are 

 ten rows of striae, the intervals between them being very linely 

 wrinkled. The insect is common in some localities, but in 



zzra.. 



1. Prasocnris beccabnngiB. 2. Phyllotreta brassicse. 3. PsylUocles hynscvami. 4. Cas- 

 sida viridis. ■ 5. Triplax russica. a. Phyllotreta, tavra. b. Cassitla, larva. c. Cassida 

 pupa. (/. Cassida, maxillary palpus. e. Cassida, labial palpi. 



others seems to be rather scarce — its rarity or plenty depend- 

 ing, in all probability, on the presence or absence of the herb 

 on which it generally feeds. There are five Britisli species of 

 this genus. 



Pas-sing by the family of the G-alerucid*, we come to the 

 enormcus family of the Halticidse, the members of which, 



