64 TOE ENTOMOLOGIST. 



examination of such materials as were accessible to the 

 compiler ; the family Ephemeridae had been entirely fur- 

 nished b)^ the Rev. A. E .Eaton ; and the Odonata, including 

 six families, — the Libellulidas, Corduliidae, Gomphida3, 

 yEschnidae, Calopterygidge and Agrionidae, — had been com- 

 piled from the works of De Selys Longchamps and Hagen, 

 adopting, however, almost in its entirety, the division of the 

 old genus Libellula originally proposed by Newman. The 

 Planipennia and Trichoptera were catalogued in accordance 

 with Mr. M'Lachlan's Monographs of the British species pub- 

 lished in the Transactions of this Society, the Planipennia in 

 the Transactions for 1868, and the Trichoptera in 1865 in 

 the fifth volume of the third series, with such additions and 

 corrections in each case as subsequent investigations had 

 rendered necessary. 



Plusia ni. — Mr. J. Hunter exhibited a Plusia, captured 

 by Mr. Stock in the New Forest, and believed to be Plusia 

 ni. (See Ent. Mo. Mag. v. 107; Ent. Ann. 1869, p. 124; 

 1870, frontisp. fig. 3). 



Insect-galls in the Flowers of the Tansy. — Mr. Albert 

 Mliller exhibited some insect-galls in the flowers of the 

 tansy : he had received them in September from Mr. 

 Dorville, in whose garden, near Exeter, the growth of *he 

 plant was encouraged, from finding that flies, moths and 

 bees resort to it when the flowers are fresh. The galls had 

 been submitted to the author of ' Vegetable Teratology,' and 

 Dr. Maxwell Masters remarked upon them as follows : — 

 " It appears to me that the whole flower (floret rather) has 

 become hypertrophied, and at the same time the stamens, 

 style and ovule have entirely disappeared. 1 judge the 

 structure to be an altered flower because it springs from the 

 axil of a bract or palea, and because at the summit are five 

 little teeth precisely like those of the corolla. In my book, 

 for the most part, insect deformities are passed over for two 

 reasons ; one that I am quite ignorant of Entomology, and 

 the other that the changes produced by insects are often so 

 far foreign to the natural conformation as not to admit of 

 comparison with it. 1 should, however, have inserted your 

 tansy under hypertrophy of the flower, had I seen it pre- 

 viously." Mr. Miiller added that the perfect insect had not 

 yet been bred, but the larva showed it to belong to the 

 Diptera, though not a Cecidomyia. 



