Prismatolaimus intermedius (Bütschli) .

Monhystera intermedia Bütschli, 1873, p. 67, pl. vi, fig. 33 a-b.

Prismatolaimus intermedius (Bütschli) de Man, 1884, pp. 79-80, pL. xi and xii, fig. 46.

Dimensions --Body-length: 0.550 mm., max. width= 0.011 mm., oesophagus = 0.148 mm, t a i l =0.1 4 8 mm., vulva= 0. 2 3 8 mm., α=50.0, β =3.72, γ =3. 7 2, V: 4 3. 2 7 per cent.

This small species was first described b y Biitschli, who unfortunately regarded it as a species o f the genus Monhystera .

I n the shape o f the buccal c a v i t y and the tail the single female from B9 agrees r a the r well with the descriptions and figures, given by the above authors.