JOTTINGS ON APHIDES. 235 



ing round the house-windows ; it is quite indifferent to light, and 

 attacks with equal voracity sickly ivy-shoots in dark places ; 

 Lasiiis niger is much attracted by it. Local guelder rose appears 

 exempt from A. viburni, Schr., which was abundant on V. opiilus 

 in Mr. Morey's garden at Newport, Isle of Wight, at the end of 

 June, 1907. A. rumicis, Linn., is one of our commonest kinds 

 here, and bewilderingly omnivorous ; I first took the winged form 

 singly in only half-uncurled apical leaves of Riimex acetosa ; all 

 its forms were a pest to broad beans throughout last summer, 

 and flew abundantly into one's eyes during the flowering season. 

 Early in August it was common on Cnicus arvensis, formed black 

 masses on some of the stalks of Petasites officinalis, swarmed on 

 beet-plants, and a few females and pupae occurred on Hieracium ; 

 I also took it at Norton Wood, Isle of Wight, on June 20th, and 

 received it from Fulham (London) in September. Thirteen of 

 the distinct larvae of A. papaveris, Fabr., were clustered together 

 on the under side of a leaf of Papaver rhceas on July 30th, 1907, 

 and three winged forms found on the same plant on June 8th 

 may be identical. All the forms of A. pyri, Fonsc, were abun- 

 dant in the curled leaves of Pijrus communis early in June. I 

 have been quite unable to discover the common A. jacobace, 

 Schr., A. labunii, Kalt,, and A sambiici, Linn., upon their respec- 

 tive food-plants, though diligently searched ; nor have I detected 

 any of the half-dozen Hyalopteri, except H. arundinis, which 

 was so abundant on all the reeds in salt-marshes about South- 

 wold as to render the sweep-net quite heavy ; among them I de- 

 tected Coccinella 11-punctata and great numbers of Bassus IcBta- 

 torins, both apparently ovipositing. 



At the end of May Chaitophorus aceris, Linn., is abundant 

 beneath the leaves of Acer campestris, in all its forms, mingling 

 later with Drepanosiphum. Buckton says the alate G. salicivorus, 

 Walk., is unknown in Britain, but on August 2nd last I suc- 

 ceeded in securing three examples of it among myriads of the 

 apterous form scattered all over the under side of leaves of Salix 

 caprea ; one of the winged specimens was dead when found, 

 though not parasitized. The common form was also seen at 

 Southwold in September. In the middle of August C. leucomelas, 

 Koch, is not uncommon in its curious flavous dome-shaped 

 blisters both on the upper and lower sides of the leaves of 

 Populus tremula at Monks Soham and Easton Park. The winged 

 form of Callipterus betulicola, Kalt., was excessively abundant on 

 small birch-bushes in Tuddenham Fen, Suffolk, on May 6th. 

 C. coryli, Goet., occurred commonly, though singly and sparsely 

 scattered over the under side of hazel-leaves here early in last 

 August; the apterous form was then much the rarer. Two 

 winged females and four pupae only had been previously taken on 

 June 4th. It was also common at Easton Park in the middle of 

 August, together with C. quercus, which I first found on oak- 



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