NEMATODE PARASITES OF BIEDS 79 



35. Female tail 1/35, male tail 1/70 of total body length; eggs 91/t long by 

 57/* wide; spicules subequal, 2.06 and 2.37 mm. long. 



Ascaridia cordata, p. 88. 

 Female tail 1/67, male tail 1/48 of total body length : eggs 73/* long by 



42/* wide ; spicules equal, 1.74 mm. long Ascaridia circularis, p. 86. 



1G. From Qallus (jaUus; male only, 24 mm. long by 600/* wide; preanal sucker 



110/t in diameter Ascaridia brasiliensis, p. 84. 



From other hosts than above or, if from Galht.s <j<iUii,s, total length of male 

 30 mm. or more and sucker over 200/t in diameter 17. 



17. Spicules 1.87 mm. long, their middle part enlarged to form unilateral 



wings on the face of which are 10 to 12 small projecting teeth. 



Ascaridia hermaphrodita, p. 80. 

 Spicules of different length or different shape, or both, from above 18. 



18. Male 45 mm. long ; 7 pairs of postanal papillae ; caudal sucker 340/* in 



diameter; spicules 3.6 mm. long Ascaridia borealis, p. 84. 



Male not agreeing with above in all particulars 19. 



19. Body with 26 to 30 pairs of cervical papillae 20. 



Body without numerous cervical papillae, or noue described 21. 



20. Tail of female 1/78 of total body length ; spicules 950/* long by 42/* wide. 



Ascaridia cristata, p. 89. 



Tail of female 1/30 of total body length, or longer; spicules 1.2 to 1.9 



mm. long Ascaridia columbae, p. S6. 



21. Male only known ; 9 pairs of postanal papillae ; spicules 820/* and 827/* 



long Ascaridia anseris, p. 101. 



Both male and female known ; male with less than 9 pairs of postanal 

 papillae ; spicules, if length given, different from above 22. 



22. Tail of female 1/117 of total length ; eggs 172/* long by 146/* wide 



Ascaridia stroma, p. 99. 



Tail of female, if length given, longer than above; eggs considerably 



smaller than above 23. 



23. Vulva posterior to middle of body 24. 



Vulva at middle or anterior to middle of body 26. 



24. Male with 12 pairs of caudal papillae Ascaridia orthocerca, p. 97. 



Male with 10 pairs of caudal papillae 25. 



25. Spicules equal, 3 mm. long; eggs 9S/* by 53/* Ascaridia numidae, p. 96. 



Spicules subequal, 1.95 and 1.97 mm. long; eggs SI/* long by 47/t wide 



Ascaridia trilabium, p. 101. 



26. Male and female both 41 mm. long. Vulva at anterior third of body. In 



Penelope humeralis Ascaridia serrata, p. 98. 



Total length usually greater than above; vulva usually more posterior than 

 above. In other hosts than above 27. 



27. Preanal sucker not over 162/* in diameter 28. 



Preanal sucker 200/* or more in diameter 29. 



28. Male with tail 1/80 of body length and with 1.! pairs of caudal papillae; 



sucker 162/* in diameter; spicules 1.66 mm. long 



Ascaridia magalhaesi, p. 95. 



Male with tail 1/55 of total Length and with 10 pairs of caudal papillae; 



sucker 100/* in diameter; spicules 00!)/* long__Ascaridia pterophora, p. 07. 



29. Female not over 52 mm. long; eggs 68/f long; preanal sucker of male 340/* 



in diameter; spicules 3.4 mm. long Ascaridia strelnikowi, p, 99. 



Female 60 nun. of longer; eggs 75/* or longer, except possibly in A. Un- 

 eata; preanal sucker not over 250/* in diameter; spicules shorten- than 

 3.4 mm. except in A. galli where they may possibly he 4 mm. long— 30. 

 3012—27 7 



