240 
Zeiss Okularmikromn 40012: 
Length 72 — 1,1 mm. 
Oes. 10. 
Vulva 26. 
Tail 10. 
Width 4. 
Formula of 'de Man: 0—18, 2—6!/2, 17 =7. 
Rhabditis terricola Dujardin. 
1845. Dujardin, p. 240. 
1873. Bitschli, p, 107, TXT, fig. 643—D., TX, fe, 614 
1386: Urley, p.35 TD fr 1077: 
This species was taken in the Kildeskov in putrefying fungi 
and on a field between Hellerup and Charlottenlund in horse- 
manure. 
Rhabditis pellio Schneider. 
1866. Schneider, p. 154. 
1873. Bitschli, p. 112. T. IX. fig. 59 a—d. T. X. fig. 59 e. 
1888. Orlov 9 883. T.L 
In culture, established on dead lumbrici in earth I have got 
this form several times. I have never taken it free in the earth. 
Rhabditis marina Bastian. 
FL He BE br ; 
1865. Bastian, p. 129, Pl. X. fig. 60.—62. 
Last year in thé month of April this species was taken at 
the beech of Charlottenlund among putrefying sea-wced, Entero- 
morpha and Ulva. Under the microscope it proved to be highly 
pellucid, of a very nice form and of a size unusual in the group 
of the Rhabditidæ. 
The shape is rather slender, tapering at both ends. The cuti- 
cula shows transverse striæ and under high magnifying powers also 
longitudinal striæ. The mouth is surrounded with six inconspi- 
