390 
A CONTRIBUTION TO THE KNOWLEDGE OF THE 
TAPEWORMS OF FOWLS AND OF SPARROWS. 
By F. J. MEGGITT, M.Sc., 
Board of Agriculture and Fisheries Research Scholar, 
University of Birmingham. 
(With Plates XIX-XXI and 1 Text-figure.) 
CONTENTS. 
PAGE 
Tapeworms from fowls: 
Davainea dubius nov. spec. . . . . 391 
Davainea cesticillus Molin ..... 399 
Amoebotaenia sphenoides von Linstow . . 400 
Tapeworms from sparrows: 
Choanotaenia parina Dnj. ..... 404 
Hymenolepis interruptus Clerc .... 405 
References ........ 409 
Introduction. 
The present paper contains the results, other than those already 
published, of work done in the Department of Agricultural Zoology at 
the Birmingham University upon the tapeworms of birds. At the 
commencement, a little over two years ago, the aim was to make a 
complete investigation of the Cestodes of British birds, both from the 
standpoint of anatomy and also of life-history, since, as far as I am 
aware, there exists no adequate description of them. It was found 
impossible to obtain a regular supply of any one species of tapeworm, 
hence the work upon one particular species could only be carried on 
spasmodically. The results, having to wait upon the occurrence of the 
material, are necessarily incomplete. Circumstances having made it 
necessary temporarily to postpone the work, it was considered advisable 
to write up and publish the results so far obtained. 
