NO. 6 CLASSIFICATION OF NEMATODES FILIPJEV 45 



1927a. A new nema, Aphelenchus retusus, with a proposed division of 

 y\phelenchus into three subgenera. Ibid., vol. 14, no. i, p. 57, 



Sept. 

 1927b. A larval nema infecting Copepods (Pachycyclops signatus) in 



fresh and salt ponds in southeastern Massachusetts. Ibid., vol. 



14, no. I, pp. 43-47, I fig-> Sept. 

 1928a. Ungella secta n. gen., n. sp. ; a nemic parasite of the Burmese oli- 

 gochaete (earthworm), Eutyphoeus rarus. Journ. Washington 



Acad. Sci., vol. 18, no. 7, pp. 197-200, figs. 1-4, Apr. 4. 

 1928a. Idem. Contributions to a science of nematology, 18, pp. 394-397, 



figs. 1-4. Baltimore, June 19. 

 1928b. A new species of the nemic genus Syringolaimus ; with a note on 



the fossorium of nemas. Journ. Washington Acad. Sci., vol. 18, 



no. 9, pp. 249-253, figs. 1-3, May 4. 

 1928b. Idem. Contributions to a science of nematology, 19, PP- 398-402, 



figs. 1-3. Baltimore, June 9. 

 1929. Observations on the morphology and physiology of nemas ; includ- 

 ing notes on new species. Journ. Washington Acad. Sci., vol. 



19, no. 13, pp. 283-286, figs. 1-7. 

 Cobb, N. A., Steiner, G., and Christie, J. R. 



1923. Agamermis decaudata Cobb, Steiner and Christie; a nema parasite 



of grasshoppers and other insects. Journ. Agr. Res., vol. 23, 



pp. 921-926. 

 CORTI, E. 



1902. Di un nuovo Nematode parasita in larva di Chironomus. Rend. R. 



1st. Lomb. Sci. Lett. Milano, ser. 2, vol. 35, pp. 105-113. 

 De Cillis, M. I. O. 

 191 7. Cf. 1920. 

 1920. I Nematodi del lago stagno craterico di Astroni. Ann. Mus. Zool. 



R. Univ. Napoli, suppl. 8, pp. 1-35, pi. 12. 

 De Man, J. G. 



1876. Onderzoekingen over vrij in de aarde levende Nematoden. Tijd- 



schr. Nederl. Dierk. Vereen., vol. 2, pp. 78-196, pls. 3-i3, figs. 



1-51. The Hague and Rotterdam. 

 1880. See 1884. 



1884. Die frei in der reinen Erde und im siissen Wasser lebenden Nema- 

 toden der niederlandischen Fauna. Eine systematisch-faunis- 



tische Monographic, 206 pp., 34 pis. (145 figs.). Leiden, (See 



also ed. 2, abridged, 1919.) 

 1886. Anatomische Untersuchungen fiber freilebende Nordsee-Nema- 



toden. 82 pp., 13 pis. Leipzig. 

 1888. Sur quelques nematodes libres de la mer du Nord, nouveaux ou peu 



connus. Mem. Soc. Zool. France, vol. i, pts. 1-3, pp. 1-5 1, pls. 



1-4, figs. i-20a. Paris, June i. 

 1889a. Especes et genres nouveaux de nematodes libres de la mer du 



Nord et de la Manche. Ibid., vol. 2, pt. i, pp. i-io. 

 1889b. Troisieme note sur les nematodes libres de la mer du Nord et de 



la Manche. Ibid., pp. 182-216, pls. 5-8, figs. i-i2e. 



