34 



PROCEEDINGS OF TEE NATIONAL MUSEUM. 



VOL. 50. 



CAPILLARIA RANSOMIA Barker and Noyes, 1915. 



Specific diagnosis.— CapiUaria (p. 33) : Anal aperture subterminal. 

 Male 19.6 mm. long with a body diameter of 10 ix just behind the 



0.01 mm. 



Fig. 38.— CAPttLA- 

 ru ransomia. 

 Egg. After 

 Barker, 1915. 



Fig. 37.— Capillaria ran.somia. Posterior extremity of male. After Barker, 1915. 



head and of 32 fi in the posterior portion. Posterior end slightly 

 curved and provided with a small bursa with two lateral lobes (fig. 

 37) ; spicule 1.36 mm. long and 7 ix thick; the sheath 

 of the spicule 10 [i in diameter. 



Female 19 mm. long with a bod}'' diameter of 22 pi. 

 just behind the head and 65 p. in the posterior portion. 

 Vulva in anterior fourth of the body, 5 mm. from the 

 anterior end. Eggs 50 by 20 ]x. in diameter and with 

 prominent plugs (fig. 38). 

 Host. — Ondatra zibethica {Fiber zihethicus) . 

 Location. — Duodenum. 

 Locality. — United States (Nebraska). 



This worm is described in a paper by Barker (1915). His indi- 

 cated magnifications do not agree with text. 



CAPILLARIA BACILLATA (Eberth, 1863) Hall, 1916. 



Synonym. — Trichosomum hacillatum 



Eberth, 1863. 



Specific diagnosis. — 

 CapiUaria (p. 33) : Dorsal 

 bacillary band three- 

 fourths of body diametar 

 and ventral bacillary band 

 one-third of body diameter 

 (fig. 39). The rods are 

 thicker in the dorsal band. 

 The lateral bands are small 

 and simple. Mouth aper- 

 ture surrounded by three 

 small papillae. 



Male 15 mm. long with a 

 maximmn thickness of 80 [x. 



Posterior end of body slightly bent toward the ventral surface (fig. 



40). A bursa, consisting of two lateral flaps, is present. Cloacal 



Fig. 39.— CAPILLA- 

 ria bacillata. 

 Cross-sectiok 

 of posterior 

 (postvulvar) 

 part of body, 



showing DOR- 

 SAL AND VEN- 

 TRAL BACILLARY 

 BANDS. DlX- 



gramm atic. 



Enlarged. Af- 

 ter Eberth, 

 1863. 



Fig. 40. — Capillvria bacillata. 

 Posterior extremity of male, 

 showing sheath. Enlarged. 

 After Eberth, 1863. 



