153 



Smith and Pritchard: Odonata 



SNODGRASS, R. E. 



1954. The dragonfly larva. Smithsonian Misc. Coll. 

 123:1-38. 

 TILLYARD, R. J. 



1917. The biology of dragonflies (Odonata or Paraneur- 

 optera). Cambridge University Press, xii, 396 pp. 

 VALLE, K. T. 



1942. A small list of Odonata from U.S.A. collected 

 summer 1928 by Prof. U. Saalas and Mrs. Anna-Liisa 

 Saalas. Ann. Ent. Fenn., 8:163-166. 

 WALKER, E. M. 



1912. The North American dragonflies of the genus 

 Aeshna. Univ. Toronto Stud., B'ol. Ser. 11:1-213. 



1913. New nymphs of Canadian Odonata. Canad. Ent., 

 45:161-170. 



1914. The known nymphs of the Canadian species of 

 Lestes. Canad. Ent., 46:189-200, 349-50. 



1914. New and little known nymphs of Canadian Odonata. 



Canad. Ent., 46:349-56, 369-377. 

 1916a. The nymphs of Enallagma cyathigerum and E, 



calverti. Canad. Ent., 48:192-196. 

 19166. The nymphs of the North American species of 



Leucorrhinia. Canad. Ent., 48:414-422. 

 1917. The known nymphs of the North American species 



of Sympetrum (Odonata). Canad. Ent., 49:409-418. 

 1925. The North American dragonflies of the genus 



Somatochlora. Univ. Toronto Stud., Biol. Ser., 26:1- 



202. 



1933. The nymphs of the Canadian species of Ophiogom- 

 phus. Canad. Ent., 65:217-229. 



1934. The nymphs of Aeschna juncea L. and subarctica 

 Wlk. Canad. Ent. ,66:267-274. 



1937. A new Macromia from British Columbia (Odonata: 



Corduliidae) Canad. Ent., 69:5-13. 

 1940a. A preliminary list of the Odonata of Saskatchewan. 



Canad. Ent., 72:26-35. 

 19406. Odonata from the Patricia portion of the Kenora 



district of Ontario with description of a new species 



of Leucorrhinia. Canad. Ent., 72:4-15. 

 1941. The nymph of Aeschna verticallis Hagen. Canad. 



Ent., 73:229. 

 1944. The nymphs of Enallagma clausum Morse and E. 



boreale Selys. Canad. Ent., 76:233-237. 



1951. Sympetrum Bemicinetum (Say) and Ita neareat 

 allies (Odonata). Ent. New , 62:1 



1952. The Lestes disjvnotvs and forcipatus complex 

 (Odonata: Lestidae) Trans. Amer. Knt. Boo., 7V59-74. 



1953. The Odonata ..f Canada and Alaska Vol. I., Pari 

 I, General Part II, The Zygoptera-damselfllea. Univer- 

 sity of Toronto Press, 292 pp. 



WESTFALL, M. J. 



1953. The nymph of Mialhyria marcella Selys (Odonata). 

 Fla. Knt., 36:21-25. 

 W1IEDON, A. D. 



1927. The structure and transformation of the labium of 

 Anax Junius. Biol. Bull. Woods Hole, 53:286-300. 

 WHITEHOUSE, F. C. 



1941. British Columbia dragonflies (Odonata), with notes 

 on distribution and habits. Amer. Midi. Nat., 26:488- 

 557. 

 1948. Catalogue of the Odonata of Canada, Newfoundland 

 and Alaska. Trans. Royal Can. Inst., 27:3-56. 

 WHITNEY, R. C. 



194 7. Notes on Tanypteryx hageni. 

 WILLIAMS, F. X. 



1937. Notes on the , biology of 

 Rambur, a crepuscular dragonfly 

 Pac. Ent., 13:1-8. 

 WILLIAMSON, E. B. 



1900. Notes on a few Wyoming dragonflies. Ent. 



11:455-458. 



1909. The North American dragonflies (Odonata) of the 

 genus Macromia. Proc. U.S. Nat. Mus., 37( 1710):369- 

 398. 

 1933. The status of Sympetrum assimilatum (Uhler) and 

 Sympetrum decisum (Hagen). (Odonata: Libellulinae). 

 Occ. Pap. Mus. Zool. Univ. Mich., 11(264): 1-7. 

 WILLIAMSON, E. B., and J. H. WILLIAMSON 



1930. Five new Mexican dragonflies (Odonata). Occ. 

 Pap. Mus. Zool. Univ. Mich., 216:1-34. 

 WRIGHT, MIKE, and A. PETERSON 



1944. A key to the genera of anisopteroust dragonfly 

 nymphs of the United States and Canada. (Odonata, 

 suborder Anisoptera). Ohio Jour. Sci., 44:151-166. 



Ent. News, 58:103. 



Gynacantha nervosa 

 Guatemala. Pan- 



News, 



