Observations sur les métamorphoses internes de la guêpe et de l'abeille. [AND] Quelques remarques sur les métamorphoses internes des hyménoptères.

1900 Two papers in one. 113, 4 p., 7 figures, 5 double-page plates, half cloth (original printed covers bound in), marbled endpapers.Two important papers on the development of Hymenoptera by the French entomologist Jules Anglas. Both signed by the author on the front wrappers. In the rear, three more entomological papers are bound in, namely: L. G. Seurat's (1899) thesis "Contributions a l'étude des hyménoptères entomophages" (159 p., 5 plates), also signed by the author on the front cover; another paper by Seurat on "parasites des chênes de la Tunisie", and a paper by Ranvier & Henneguy (1901) on the ovaries of Collembola, with 6 double-page chromolithographed plates. A nice convolute of mostly hymenopterological contributions.