SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 141, PL. 29 







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A, I'ndetermined mermithid that parasitizes Ectobius pallidus. X g. The worm has partly emerged 

 from the neck region of the cockroach. (Reproduced from Roth and Willis [igsr].) B. Undeter- 

 mined gordian worm that parasitized Eurycotis fJondaiia shown beside its host, X i.S (Specimen 

 courtesy of Dr. T. Eisner. J 



