261 
NOTE ON THE PREVALENCE OF INTESTINAL WORMS 
IN DOGS IN CAMBRIDGE. 
By GEORGE H. F. NUTT ALL and CYRIL STRICKLAND. 
In the course of investigations conducted in Cambridge upon dogs 
infected with Piroplasma cams, a number of animals have been 
incidentally examined for intestinal parasites. In an unbroken series 
of 21 dogs, which died (March—September 1907) from piroplasmosis, 
the animals were autopsied immediately after death and the intestine 
examined by slitting it open along its whole length. We briefly record 
the results of these examinations, for the reason that similar reports do 
not appear to have hitherto been published in this country. All of the 
dogs harboured worms. Only three species of worms were encountered : 
Ascaris mystax, Dipylidium caninum and Taenia serrata. 
The parasites were distributed as follows:— 
No. of does har¬ 
bouring each species 
A. viystax .. ... ... 17 
D. caninum ... ... ... 14 
T. serrata ... ... ... 4 
The species occurred either alone or associated with each other: 
10 dogs harboured A. mystax. 
5 „ „ D. caninum. 
5 „ „ A. mystax and D. caninum. 
2 „ „ D. caninum and T. serrata. 
2 „ „ A. mystax, D. caninum and T. serrata. 
The numbers of A. mystax varied from 1 to 113 per dog. 
„ „ „ £>. caninum „ „ 1 to 102 „ „ 
„ „ „ T. serrata „ „ 1 to 8 „ „ 
The total number of each species recovered from the 24 dogs was 
A. mystax 296. 
D. caninum 312. 
T. serrata 17. 
