l82 ENTOMOLOGICAL NEWS [Apr., 'if 



OLIVIER, M. 1811. Encyclopedic Methodique. Histoire Naturelle des 

 Insectes Paris. (Quotes De Geer, which see.) 



PACKARD, A. S. 1869. Guide to Study of Insects. 9th ed. 1899. (On 

 page 536 quotes Roesel 1746, who says Notonccta eggs are laid on 

 the stems.) 



ID. 1881. Half Hour Recreations in Natural History. Boston. (Ch. 

 6: p. 129. N. eggs on stems and leaves.) 



REGIMBART, M. 1875. Observations stir la ponte du Dytiscus mar- 

 ginalis et de Quelques atitres Insectes Aquatiques in : Ann. Soc. Ent. 

 Fr. (5) V. pp. 204-205. 



ROESEL, AUG. JOH. 1746-1761. Der monatlich herausgegeben. Insekten- 

 belustigung. Nurnberg, 4 Vols. 



SCHMIDT-SCHWEDT, E. 1891. Schnabclkerfe in : Zacharias, Tier und 

 Pflanzenwelt des Siisswassers. Vol. II, p. 113. (N. glauca lays its 

 eggs on plants.) 



SHARP, DAVID. 1899. Cambridge Natural History. Insects, Part IT. 

 (On pg. 567 quotes Regimbart.) 



TASCHENBERG, E. L., 1884. Die Insekten. Leipzig. (Page 602. 

 Concerning N. glauca: "Mit Beginn des Friihjahres legen die Weibchen 

 ihre ovalen, hellgelben Eier an den unteren Theil einer Wasserpflanze 

 oder auf den Boden indem sic dieselben reihenweise zu einer Scheibe 

 aneinander kleben.") 



WEFELSCHEID, H. 1912. Ueber die Biologic und Anatomic von 

 Pica minuiissima. Zoologische Jahrbiicher, Jena, XXXII, pp. 387-474. 

 (See pages 396-401 and fig. D., p. 399.) 



WESTWOOD, J. O. 1839-40. An Introduction to the Modern Classifi- 

 cation of Insects, 2 Vols., London. 



EXPLANATION OF PLATE XIII. 



All the figures refer to Buenoa margaritacca unless otherwise stated. 



Fig. i. Egg removed from the stem showing the clear exposed area 

 of the egg and its margin of white. 



Fig. 2. Eggs in situ in stem of Juncus. 



Fig. 3. A portion of the stem of Juncus removed to show the egg 

 in situ. 



Fig. 4. Ventral view of the female showing the appearance of the 

 ovipositor and the crib formed by the two anterior pairs of legs for 

 the retention of entomostracans. Compare with figure 10. 



Fig. 5. Inner view of the stridular areas on the femur and tibia of 

 the anterior leg of the male, greatly enlarged from figure 6. 



Fig. 6. Inner view of the anterior leg of male showing the tibial 

 prominence and stridular areas. 



Fig. 7. Eggs of Notonecta undulata glued to the stem of aquatic 

 plant. Drawn from a photograph. 



