NO. 2131. 



NEMATODE PARASITES OF RODENTS— HALL. 



25 



lenglli of 1.55 mm. and a breadth of about 52 [jl near the distal end ; 

 proximally it has a diameter for the most part Init slightly in excess 



Fig. 24.— Trichueis leporis. 

 Posterior EXTREMITY of male, 

 showing sueatu and spicule. 

 Enlarged. After Schneider, 

 1866. 



Fig. 25.— Teichuris leporis. Vulva (v) 

 region of female, showing pocket- 

 ing in vagina. Enlarged. 



of the surrounded spicule. Toward the distal extremity the, sheath 

 is covered with delicate colorless punctations. 



Female 32 to 24.5 mm. long, with a maximum diameter 

 of about 1.12 mm. Anterior esophageal (prevulvar) por- 

 tion of body white; posterior (post vulvar) portion 

 brownish. Ratio of length of anterior portion to pos- 

 terior portion 2 : 1. The vagina appears to comprise a 

 series of pouches or pockets (fig. 25). Eggs 56 ^ long, 

 including the opercular plugs; 52 [jl long, excluding the 

 opercular plugs. The external surface of the shell is 

 delicately punctate (fig. 20). 



Hosts. — Oryctolagus cuniculus {Le pus cuniculus domes- 

 ticus, L. c. ferus)^ Lepus europaeus {Lepus tirnidus), terstossich, 

 Lepus timidus {Lepus Dariah'dis) ^ SylvUagus forldanus., ^^^*'- 

 Syl'vilagus foridanus moUurus^ Gitellus citellus {ArctoTnys cltillus^ 

 Spermophilus citillus). 



Fig. 26.— Tei- 

 churis lepo- 

 ris. Egg. En- 

 larged. Af- 



Location. 



-Large intestine. 



