NO. 2131. 



NEMATODE PARASITES OF RODENTS— HALL. 



17 



considerably, the esophagus taking little part in this growth, and the 

 male coming to lie in the mass of eggs in the uterus. I have com- 

 monly found only one male in a female; von Linstow states that 

 there may be three or four and occasionally as many as six. 



Figs. 14, 15.— Teichosomuides crassicauda. 14, Female showing extent of cuticular markings. 

 Enlarged. 15, Vulva region of female, showing cuticular markings. 



Hosts. — E'pimys rattus {Mus ratfus)., Epirnys norvegicus {Mus 

 norvegicus, Mus decumanus) . 



Location. — Pelvis of kidneys, ureters, and urinary bladder. 



Localities. — Ireland, Germany (Offenbach), Austria (Trieste. Rat- 

 zeburg), France (Paris), Australia (Brisbane), United States 



lOGOO"— Proc.N.M.vol.50— 16 2 



