NO. 2131. NEMATODE PARASITES OF RODENTS— HALL. 37 



name, like the preceding, I have regarded as binomial in intent, but 

 in the absence of further data regarding the worm I see no reason 

 for making the correct generic and specific combination. 



TRICHOSOMA MURIS-MUSCULI Creplin, 1849. 



/Specific diagnosis. — Capillaria (p. 33) : 

 Host. — Mus musculus. 

 Location. — Large intestine. 

 Locality. — Not known. 



There is no description of this species and the name must be re- 

 garded as a nomen nudum,. It might have been CapUlai^la hacillata. 



TRICHOSOMUM LEMMI Diesing, 1851. 



Synonyms. — Trichosoma Retzius, 1841 ; Trichosomuin lemmi Ret- 

 zius of Diesing, 1851, 



/Specific diagnosis. — Capillaria (?) (p. 33) : 



Host. — Arvicola ampkibius [Lem/mus wmpMMus). 



Location. — Stomach. 



Locality. — Not known. 



Retzius refers to this worm merely as Trichosoma., and the name 

 credited by Diesing to Retzius must be credited to Diesing. In the 

 location in which this undescribed worm was found, it is quite pos- 

 sible that the worm was one of the hairlike strongyles. The name 

 used is a nomen nudum; and there is considerable likelihood that the 

 record is entirely erroneous in regarding this as a trichosome. 



CAPILLARIA PAPILLOSA (Polonio, i860) Hall, 1916. 



Synonym — C alodium papillosum, Polonio, 1860. 



Specific diagnosis. — Capillaria (p. 33) : 



Male unknown. 



Female 15 (?) mm. long. Body attenuate anteriorly and rounded 

 posteriorly. Vulva in anterior portion of body. Anal aperture at 

 the caudal extremity with 4 papillae in that vicinity. 



Host. — Epimys rattus {Mus rattus). 



Location. — Urinary bladder. 



Locality. — Italy (Padua). 



Note the comment on the following species. 



CAPILLARIA SCHMIDTI Hall, 1916, emend. 



Synonym. — Trichosoma schnfiidtii von Linstow, 1874. 

 /Specific diagnosis. — Capillaria (p. 33) : Head (fig. 43) ends bluntly 

 with three small projections. No bacillary bands present. The 



