240 
. 
Zeiss O kul arm i krom. A. O c. 2. 
Lengtli 72 = 1,1 mm. 
Oes. 10. 
Vulva 26. 
Tail 10. 
Widtk 4. 
Formula of de Man: a = 18, /? = 6 1 / 2 , ^ 
Rhabditis terricola Dujardin. 
1845. Dujardin, p. 240. 
1873. Butschli, p. 107. T. XI. fig. 64 a—k. T. X. fig. 64 a. 
1886. Orley, p. 35. T. II. fig. 10—17. 
Tkis species was taken in tke Kildeskov in putrefying fungi 
and on a field between Hellerup and Ckarlottenlund in korse¬ 
man ure. 
Rhabditis pellio Sckneider. 
1866. Schneider, p. 154. 
1873. Butschli, p. 112. T. IX. fig. 59 a—d. T. X. fig. 59 e. 
1886. Orley, p. 33. T. I. 
In culture, establisked on dead lumbrici in eartk I have got 
this form several times. I have never taken it free in tke eartk. 
Rhabditis marina Bastian. 
PI. II. figs. 1, 2, 3, 4, 5, 7. 
1865. Bastian, p. 129, PI. X. fig. 60 —62. 
Last year in tke month of April tkis species was taken at 
the beeck of Charlottenlund among putrefying sea-weed, Entero- 
morpka and Ulva. Under tke microscope it proved to be highly 
pellucid, of a very nice form and of a size unusual in the group 
of the Rliabditidæ. 
The skape is ratker siender, tapering at botk ends. Tke cuti- 
cula shows transverse striæ and under high magnifying powers also 
longitudinal striæ. Tke moutk is surrounded witk six inconspi- 
