1906.] 



DR. VON LINSTOW ON WORMS PROM KOREA. 



557 



GoRDius PALLiDus, sp. n. (Text-fig. 95 A.) 



Locality. Freshwater pond in Korea. Three males. 



Length, respectively, 265, 292, and 305 mm. 



Breadth : at the anterior end, 0*59 mm. ; in the middle, 

 0'75 mm. 



Coloiir yellowish white. A broad, crescentic, cuticular fold on 

 the ventral side at the posterior extremity, the inner sides of the 

 posterior lappets and a ring around the cloacal opening yellow- 

 brown. 



Text-%. 95. 



A. Gordius pallidus. Posterior extremity of the male from tlie ventral aspect. 



B. Faracliordades coreanus. Cuticle. 



The posterior end of the body is produced into two rounded 

 lappets. The cuticle is traversed, at an angle of from 50° or 130°, 

 by two bands separated by an interval of from 0*031 to 0-039 mm. ; 

 between these bands are two systems of fine lines, running in the 

 same direction as the bands but too minute to measure. 



Parachordades coreanus, sp. n. (Text-fig. 95 B.) 



Locality. A freshwater stream, Korea. One female. 



Length 322 mm. 



Breadth : at the anterior end, 0-28 mm. ; in the middle, 

 1*18 mm. ; at the posterior end, 0-71 mm. 



Colour dark brown ; anterior end whitish, without a cervical 

 band. 



The rounded posterior extremity is sharply truncated. The 

 cuticle exhibits five- to six-sided patches of from 0'026 to 

 0-031 mm. in size ; between the patches there are glistening knobs 

 each surrounded by a light- coloured ring, fi-om which two lines 

 pass outwards at a definite angle. The cuticle also exhibits two 

 extremely delicate systems of lines parallel with those Just 

 described, and a third system running longitudinally. 



