1974] 
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527 
Literature Cited 
Hinton, H. E. 
1969a. Algunas pequerias estructuras de insectos observadas con micro- 
scopio electronico explorador. Acta Politecnica Mexicana 10: 
181-201. 
1969b. Plastron respiration in adult beetles of the suborder Myxo- 
phaga. J. Zool., Lond. 195: 131-137. 
Larsen, O. 
1955. Spezifische Mechanorezeptoren bei Aphelocheirus aestivalis Fabr. 
nebst Bemerkungen uber die Respiration dieser Wanze. Lunds 
Univ. Arsskr. 51(11): 1-58. 
Parsons, M. C. 
1969. The food pump of Aphelocheirus aestivalis F. as compared with 
that of typical Naucoridae (Heteroptera). J. Morphol. 129: 17- 
30. 
1974. Anterior displacement of the metathoracic spiracle and lateral 
intersegmental boundary in the pterothorax of Hydrocorisae 
(aquatic Heteroptera). Z. Morphol. Tiere 79: 165-198. 
Thorpe, W. H. 
1950. Plastron respiration in aquatic insects. Biol. Rev. 25: 344-390. 
Thorpe, W. H. and D. J. Crisp 
1947a. Studies on plastron respiration. I. The biology of Aphelocheirus 
aestivalis [Hc-miptera, Aphelocheiridae (Naucoridae)] and the 
mechanism of plastron retention. J. Exp. Biol. 24: 227-269. 
1947b. Studies on plastron respiration. II. The respiratory efficiency of 
the plastron in Aphelocheirus. J. Exp. Biol. 24: 270-303. 
1947c. Studies on plastron respiration. III. The orientation responses 
of Aphelocheirus [Hemiptera, Aphelocheiridae (Naucoridae)] in 
relation to plastron respiration ; together with an account of 
specialized pressure receptors in aquatic insects. J. Exp. Biol. 
24: 310-328. 
1949. Studies on plastron respiration. IV. Plastron respiration in the 
Ccleoptera. J. Exp. Biol. 26: 219-260. 
Usinger, R. L. 
1956. Aquatic Hemiptera. In Aquatic insects of California. Edited by 
R. L. Usinger. University of California Press, Berkeley and 
Los Angeles. 
Young, B. 
1944. Respiratory adaptation in an aquatic Hemipteron Cheirochela. 
Sinensia 1 5 : 141-144. 
