—109 — 
VimercarTi (comte G.). — Sulla posizione del Centro di Gra- 
vita negli Insetti e sulle Ricerche sperimentali 
del sig. Plateau per determinarla. — Florence, 
1872, 1 br. in-8°. 
VLACOVICH (G.-P.). — Sulla presenza dell acido urico nella 
ente del Baco da Seta. (Ann. Soc. Nat. Modena, 
ML) 
Waies (G.). — Substitute for Cork. (Ent. Weekl. Intell. IIL.) 
WAKEFIELD. — On the entomological fauna of New-Zealand. 
(Trans. Ent. Soc. Lond. Proc. 1869.) 
WALLACE (ALEx.). — On Sericiculture. (Entom. Annual, 1869, 
1870, 1871.) 
— On the silk produced by Bombyx Cynthia fed upon 
the Ailanthus. (Trans. Ent. Soc. of London, Proc. 
1864.) 
On Bombyx Cynthia. (Ib. Proc. 1865.) 
— On the progress of sericiculture. (Ib. Proc. 1869.) 
_ On the progress and prospects of sericiculture in 
England and some of British colonies. (Ib. Proc. 
1870.) 
WALLACE (ALF.-R.). —On the theory of mimetic resemblances. 
(Ib. Proc. 1864.) 
WALLENGREN (H.-D.-J.). — Anteckingar, Entomology. — 
Stockholm, 1870, 1 broch. in-8°. 
WaLsx (B.-D.) — On Phytophagic Varieties and Phytophagic 
Species, with remarks on the Unity of Coloration 
in Insects. (Proc. Ent. Soc. Philad. V.) 
— Professor Dana and his entomological Speculations. 
(Ib: VI.) 
— On the Insects, Coleopterous, Hymenopterous and 
Dipterous, inhabiting the Galls of certain species 
of Willow. (Ib. ib.) 
WAyxE (W.-H.) et DunniN@. —On the injuries done to straw- 
berries and carrots by a small Myriopod and the 
larvæ of a Dipterous Insect, Psila rosæ. (Trans. 
Ent. Soc. Lond. Proc. 1871.) 
Wesmael (C.). — Rapport du 22 mai 1842 sur une excur- 
sion aux dunes du littoral. (Ann. Soc. Ent. 
Belg. XV.) 
— Rapport du 27 octobre 1844 sur une excursion aux 
environs de Saint-Hubert. (Ib. ib.) 
— Rapport du 20 novembre 1847 sur une excursion 
aux environs de Huy. (Ib. ib.) 
667 
492 
646 
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