234 THE ENTOMOI.OGIST. 



and on the same leaf a winged specimen, which however must, I 

 think, he referred to A. pruni. On the same plant at Bedfield, 

 early in August, A. edentula, Buck., was fairly common in all its 

 forms on the terminal shoots. About one hundred yl. subterranea, 

 Walk., were found on the root of a carrot on August 24th ; the 

 root was distorted by them just below the surface. No winged 

 forms were seen. Mallow has failed to produced. malvcB, Fabr., 

 but it occurred last year abundantly in my garden below the 

 flower-heads of Achillea millifolium early in August, and among 

 them was walking a remarkable black female Chalcid with 

 fiavous antennae and hind femora, contrasting strangely with 

 dark tibiae ; its entire length is | mm. On June 1st, 1907, 

 winged A. mali, Fabr., were somewhat common, with a few 

 evacuated pupal skins, sitting on the under side of fully grown 

 leaves of Pyriis malus, and on the 3rd the apterous females and 

 larvte were found to be abundant in their curled apple-leaves, 

 which they discolour ; larvae of Syrplius rihesii (which I bred), 

 and, later, of Coccinella hipunctata, appeared to have entirely 

 demolished the whole of this species by the end of July. A. urti- 

 caria, Kalt., was abundant in all its forms on stems of Urtica 

 clioica on June 2nd, and what appears to be the same species 

 occurred commonly on the new shoots of Ruhus fruticosiis, though 

 only two winged specimens were seen on the latter food-plant. 

 In rolled leaves of Primus spinosa, A. pruni, De G., occurred com- 

 monly early in June, with a proportion of one winged to every 

 score of apterous females. A. atriplicis was abundant in the 

 salt-marshes at Southwold last September on Statice livionium 

 and Aster tripolium. A. hieracii {sic), Kalt., was last year first 

 seen very rarely on leaves of Heracleum sphondylium on June 9th ; 

 by the middle of July it was common, and at the beginning of 

 August excessively abundant in all its stages on the stems, just 

 below the flower, of hogweed ; on July 26th, 1904, I observed a 

 specimen of Bassus nemoralis investigating a brood of this Aphid 

 in Ipswich ; it walked over the flowers without being attracted 

 by them, and closely investigated the Aphids, but did not attack 

 them in any way ;* I am able to assert that Stigmus solskyi 

 certainly preys upon this Aphid, since I have seen this Fossor 

 attack them upon the stem of a seedling plant in Ipswich on July 

 28th and 29th (c/. Saunders, 'Aculeata.' p. 90; Prof. Poulton 

 tells me he has further confirmation of the fact). A single plant 

 of Epilohium hirsutum, among many, produced a dozen larvfe and 

 one of both forms of the female of A. epilobii, Kalt., in the middle 

 of August. A. hcderce, Kalt., first called my attention to this 

 group of insects by crowding the shoots of Hedera helix cluster- 



'■'- We have yet much to learn concerning the parasitism of the ScJiizo- 

 dontes upon aphidivorous Syrphid flies, for which no doubt both this specimen 

 and the Bassus tarsatorius mentioned above searched among the Aphids 

 {cf. Trans. Ent. boe. Lond. 1905, pp. 419-438). 



