1888-89.] Galls of Norway. 485 



a small pea, but on the twigs they are hemispherical, and 

 resemble the latter in colour. Dr Loew points out that 

 these galls were reported by Herr Frauenfeld from Levanger 

 on the Trondhjem Fiord ( Verh. Z. B. Ges. Wien, 1863, p. 

 1169). 



*(2) On leaves, as hempseed-sized, roundish, compact, 

 one-chambered, dark purple-brown galls, on the upper sur- 

 face of the leaf, the galls opening below. Found near 

 Trondhjem. This is most likely the work of a gall-midge. 



*(3) Galls of Phyto])tus {Erincmn populinum, Pers.), on 

 the lower surface of the leaves of Fopulus tremula, in the 

 form of patches of short hairs. Near Molde. 



*Salix pentaTulra. L. — Galls of Phytoptus, as outgrowths 

 from the surface of the leaves, rather warty, and purple-red 

 or yellowish on the upper surface, all parts hairless, but 

 the walls of the cavity lined with warty, naked excrescences. 

 At Lyngseidet. 



*8. 'purpurea, L. — Galls on leaves formed by Nematus 

 ischnocerus, Thoms. Near Lyngseidet. I recorded the 

 galls of this species from S. 1 phylicifolia (L.) from the 

 Simodal {loc. cit, p. 212). 



*S. hastata, L. — *(1) Galls of Nematus salicis-cinerece, 

 Eetz. From the moraine of the Svartisen glacier ; the 

 gall was recorded by me on S. nigricans, Sm., near Vik, and 

 in the Simodal (loc. cit., p. 212). 



*(2) Globular galls (5-8 mm. diam.) on lower surface 

 of the leaf; probably the work of Nematus hellus, Zadd. At 

 Lyngseidet and near Tromso. 



*(3) Swellings (8-20 by 6-8 mm.) of the twigs; the 

 work of Cecidomyia salicis, Schrk. Near Tromso. 



*(4) Galls of Phytoptus on leaves, of the size of a hemp- 

 seed or poppy-seed, and belonging to type known as 

 Cephaloneon; they project from the lower surface of the leaf. 

 Moraine of the Svartisen glacier. 



S. caprca, L. — *(1) Galls of Nematus gallicola, Westw., in 

 the leaves. At Stalheim, near Gudvangen ; and at Merok. 

 This insect is recorded in Siebke's Enumeratio Inscctorum 

 Norvegicorum. 



(2) Leaf-galls of Nematus hellus, Zadd. Once near Lyng- 

 seidet. 



(3) Leaf -galls of Hormomyia caprece, Winn. Near Tromso. 



