NO. 225S. TAENIOID CE8T0DES OF DOGS AND CATS— HALL. 



79 



Head with 3 to 4 circlets of hooks ; strobila 15 to 40 cm. long ; 100 to 200 

 testes ; cirrus pouch piriform and extending to and occasionally across 

 the longitudinal excretory canals ; no receptaculum seminis present, the 

 oviduct showing a compensatory dilation ; vagina opens ventral of the 

 cirrus pouch aperture ; eggs 43 to 50 /j- in diameter. 



Dipylidium caninum, p. 73. 



LIST OF HOSTS. 



The writer is indebted to Mr. Gerrit S. Miller, of the United States 

 National Museum, for suppljnng the correct name in present usage 

 for the various hosts involved in this paper. The names used by 

 various authors which are no longer in good standing are covered 

 in cross references. 



BIAMMALS. 



Maesxjpiala. 



Macbopodidae. 



Macropus giganteus: 



Echinococcus granulosus. 

 Macropus major: 



Echinococcus granulosus. 

 Insectivoba. 

 Talpidae. 



Talpa europaca: 



Taenia taeniaeforniis. 

 Cheibopteba. 



Vespebtilionidae. 

 Flecotus auritus: 



Taenia taeniaeformis. 

 Cabnivoba. 

 Canidae. 



Cants aureus: 



Echinococcus granulosus. 

 Mesocestoides litteratus. 

 Canis dlnffo: 



Echinococcus granulosus. 

 Canis familiar is: 



Dipylidium caninum. 

 Dipylidium sexcoronatum. 

 Echinococcus granulosus. 

 Mesocestoides lineatus, 

 Mesocestoides litteratus. 

 Multiceps gaigeri. 

 Multiceps multiceps. 

 Multiceps serialis. 

 Taenia halaniceps. 

 Taenia brachysoma. 

 Taenia brauni. 

 Taenia hydatigena. 

 Taenia krabbei. 

 Taenia ovis. 

 Taenia pisiformis. 



Caenivoka — Continued. 

 Canidae — Continued. 

 Canis latrans: 



Taenia, pisiformis. 

 Canis lupus: 



Echinococcus granulosus. 



Taenia hydatigena. 

 Canis mesomelas : 



Dipylidium eaninum. 



Echinococcus granulosus. 



Taenia hydatigena. 

 Canis nebraccnsis: 



Multiceps multiceps. 



Taenia pisiformis. 

 Canis lagopus. See Alopex 



lagopus. 

 Canis vulpes. See Vulpea 



vulpes. 

 Saddle-backed jackal: 



Taenia hydatigena. 

 Alopex lagopus: 



Mesocestoides lineatus. 

 Vulpes vulgaris. See Vulpes 



vulpes. 

 Vulpes vulpes: 



Mesocestoides littej'atus. 



Mesocestoides lineatus. 

 Fox: 



Taenia pisiformis. 

 Vrocyon cinero-argentatus: 



Taenia pisiformis. 

 Mustelidae. 



Oalictis species: 



Taenia macrocystis. 

 Maries foina: 



Mesocestoides litteratus. 



