ACANTHOCEPHALA 285 



M. clarki, has been described by Ward from a squirrel in Illinois; it 

 is a worm about four or five inches in length with a very minute 

 proboscis. Ward believes that this species would also probably 

 develop in man if the larvae were accidentally swallowed with 

 some insect which presumably serves as an intermediate host. 

 A Moniliformis which may be identical with M. moniliformis was 

 found by the writer in about ten per cent of rats in Houston, 

 Texas, and it has been reported in other parts of the United States 

 also. 



