Vol. XXviii] ENTOMOLOGICAL NEWS. 277 



KiRKALDY, G. W., 1897.— Revision of the Notonectidae, Pt. I, in: 

 Trans. Ent. Soc. London, 1897, pp. 393-436. 



Ibid, 1896. — Notonecta glauca — its oviposition. Proc. Ent. Soc. Lon- 

 don, 1896, p. xxvii. 



MouFFET, Thomas, 1634. — Insectorum sive Minimorum Animalium 

 Theatrum. 



NowROjEE, D., 191 1. — Life Histories of Indian Insects, II. Some aqua- 

 tic rhynchota and coleoptera in : Memoirs of the Dept. of Agri. 

 in India. Vol. II, No. 9. Ento. series. Pub. by W. Thacker & 

 Co., 2, Creed Lane, London. May. 



Say, Thomas, 1859. — American Entomology, Vol. I, 1859, p. 368. 



Severin and Severin, 1910. — Notonecta undulata Say preying upon 

 eggs of Bclostoma flumineum Say. Can. Ento., 42, p. 340. 



Simpson, S. G., 1848. — Quoted by Dr. Spence in : Trans. Ent. Soc. 

 London, Vol. 5 : Proceedings, p. 36. 



SwAMMERDAM, JoHN, 1758. — The Book of Nature or the History of 



Insects Translation from the Dutch and Latin Original 



Edition by Thomas Floyd. Revised and improved by notes from 

 Reaumur and others by John Hill, London. 



Uhler, P. R., 1884.— In: Kingsley. J. S.— Standard Natural History, 

 Vol. II. Crustacea and Insects. 



Ibid, 1876. — List of the Hemiptera of the Region West of the Miss. 

 River, including those collected during the Hayden explorations 

 of 1873. Bull. U. S. Geol. and Geog. Survey, Vol. I. 



Walckenaer, C. a., 1802. — Faune parisienne, Insectes, ou histoire 

 abrigee des Insectes des environs de Paris, p. 331. 



Explanation of Plates. 

 Plate XIX. 



Fig. I. — Ventral view of terminal abdominal segments of male Noto- 

 necta undulata Say. 



Fig. 2. — Fifth instar nymph. 



Fig. 3. — Ventral view of terminal abdominal segments of female. 



Figs. 4a to 4e. — Diagrams of dorsal view of meso- and metathorax 

 of nymphs, first to fifth instars respectively, showing the de- 

 veloping wing pads. 



Fig. 5. — 3rd instar nymph. Both rows of swimming hairs shown. 



Fig. 6. — Antennae of 5th instar nymph. 



Fig. 7. — Antennae of adult male. 



Fig. 8. — 2nd instar feeding upon an ostracod. 



Fig. Q. — 1st instar nymph — drawn by Miss Ellen Edmonson. 



Fig. 10. — Tarsus of hind leg of first instar nymph showing the tarsal 

 claws which become less conspicuous as development ad- 

 vances. 



Fig. II. — Egg of Notonecta undulata, showing details of structure, 

 drawn by Miss Ellen Edmonson. 



