Bull. U. S. F, C. 1 899. (To face page 492.) 



Plate IX. 



99 -%H>'^ 



>l.vrfir/.s- s|). fniin Srhiinjts occUalna, coiitiinii'il. IVistcrior cmi, 



latt-nil viuw. x 50. 

 Hftid of youiiK siKHMnifii. x 225. 

 Extreme tip of tail hifihly magiiifiefl. 



Ascaris sp, from CoUunrulns iboiusmiii. HohI oi fi-inaU-. .■ 17i(, 

 Upper lip. > 170. 

 Posterio end, lateral view, x 27. 

 Posterior end of male, lateral view, x 22. 

 ,-lscaris sp. from Psciidapli iirourctoi mncricanu.^. ^'i^■\\■ nf lioad. 



highly magnified. 

 Posterior view of male, lateral view, x 50. 

 Ascaris sp. from Miistehis canU. Posterior i-nd. latt-nil view. 



X 168. 



tniit nriniiis. 



GO. 



91. Ascaris sp. frnni Jlcmitriptcru'^ 



female. tiO. 

 U2(f. Dorsal view of head, x 180. 

 'J2h. Ventral vi<*w oi' head, y ISO. 

 O:^ Upper lip of same, x ISO. 

 'M. Posterior end of small specimen 

 05. Aifcaris9.p. (probably same ^peeies as foregoinK 



aliis o/nnefloi'aiis. Posterior end. ■ -12. 

 9B. Extrem'e tip of tail, x 210. 



97. Asmris^p. from Microgndun tmuauL Dorsal view 



98. Posterior end. lateral view, x 75. 



99. Extreme tip of same, x 300. 



Posterior end of 



I from Gltiptni-tph' 

 of head. X 225. 



