Cabbage Aphis. 93 



Reported Colorado Beetle at Hockley. 



Some pupae sent from Hockley were those of the 7-spotted Lady- 

 bii'd (C. scptempiLnctata). 



There are no records of any of the true Lady-bii'ds, except a 

 single species of Suhcoccinella, S. vigintiquatuor punctata, Linn., doing 

 any harm to foliage in this country, but many of the large genus 

 Epilachnct, which does not occur here, do considerable harm, and are 

 all herbivorous and not carnivorous. It is extremely improbable 

 that tlie potato leaves sent by Mr. Craigie, which appear to be 

 devoured to some considerable extent, have been attacked by the 

 Coccinellids sent. It is much more likely that "Surface Larv?e," 

 which are nocturnal feeders, were the cause of the damage, or slugs. 



At the same time, it is of course not impossible for carnivorous 

 insects to develop herbivorous habits. Search should be made on the 

 potatoes for Plant Lice, the normal Lady-bu'd food ; if none occur, 

 then there would be more reason to think that the larval Coccinellids 

 had become herbivorous. 



Supposed Colorado Beetle at South Benfleet. 



Pupae sent from South Benfleet as Colorado beetles were those 

 of the 7-spotted Lady-buxl (C. septempunetata). 



Suspected Colm^ado Beetle at Northfleet. 



Pupse also sent from Northfleet were those of the 7-spotted Lady- 

 bird (C. septemjmnetata), and not any stage of the Colorado Beetle, 

 Nothing was found in the tube resembling Pig. 2 of the pamphlet, 

 but the pupae are those figured at No. 7. 



There was also sent a small adult Lady-bu'd {Hippodamia 

 variegata). 



EOOT CROP PESTS. 

 The Cabbage Aphis on Turnips. 



A correspondent forwarded in September some turnip leaves 

 seriously damaged by aphides from the Isle of Thanet. The leaves 

 were attacked by the Cabbage Aphis {Apliis hrassiccc, Linn.) Nothing 

 can, of course, be done as late as this ; as a rule the Ichneumon flies 

 parasitise them in enormous numbers in September. It is not 

 known for certain how they pass the winter — but probably in the 

 egg-stage on wild Cruciferae. This species does not usually attack 



