Prismatolaimus dolichurus de Man.

Prismatolaimus dolichurus de Man. (Fig. 4.)

de Man, 1884, pp. 80-81, pl. xii, figs. 47, 47 a (head).

Dimensions.—A4. Body -length= 0.8 0 9 mm., max. width= 0.018 mm, oesophagu s =0.1 9 7m m., tail = 0. 2 1 3 m m., α=44.94, β=4.11, γ =3.8 0.

E5. Body - lengt h = l. 2 1 6m m., max. width = 0. 0 2 8m m, oesophagu s = 0.254 mm., tail = 0.443 mm., vulva= 0.475 mm., α=43.43, β=4.79, γ =2.74, V =39.06 per cent.

The b o d y is v e r y slehder. Cephalic bristles s i t u a t e d submedially, as large as or only a little shorter t h a n the head-diameter a t the same level. The buccal c a v i t y is short, large, cylindrical, a b o u t twice as deep as broad. The (esophagus increases almost imperceptibly t o w a r d s the posterior end.

The tail is exceedingly elongated, v e r y slender, posteriorly pointed. The v u l v a is s i t u a t e d in front of the middle of the body. Female organs paired with short gonads, the anterior of which is reflexed dorsally, the posterior gonad ventrally.