— 710 — 
muscular throughout its length, directed anteriorly in fîrst third and then flexed to posterior. 
Uteri opposed, ovary of posterior utérus located anterior to vulva, ovary of anterior utérus 
located posterior to vulva. Eggs oval, thin-shelled, 62-72 pm long and 35-45 p.m wide (based 
on 5 specimens). Latéral alae extending from mid-region of tail to level of nerve ring. 
Tail 209-241 p.m long, conical, sharplv pointed. 
Specimens examined : (1) ZMB 1027 (worms collected by Schneider (1866) from R. lempo- 
raria of Germany). (2) CIH 4567 (R. temporaria, England). (3) CIH 593/29 (B. bufo, London Zoo). 
(4) Frandsen Personal Collection Bbu 28 (B. bufo, Denmark). (5) CIH 805/30 [O. apodus, London 
Zoo). (6) BM 1923.8.28.87-91 (A. fragilis, S. atra, Europe). (7) BM 1923.12.19.82-91 (S. maculosa, 
Europe). (8) BM 1964.1601-1606 (B. bufo, Britain). (9) MNHN 7KA (S. maculosa, Corsica). (10) 
MNHN 418 NF (/?. dalmatina, France). 
Fio. 1. — Oxysomatium brevicaudalum (Zeder, 1800) Railliet & Henry, 1916. A, B, C, anterior extremity, 
latéral, apical and dorsal view ; D, idem, optical section through lips ; E, idem, section througli base 
of lips ; F, idem, section through anterior end of oesophagus ; G, anterior end of male, latéral view. 
Source : MNHN, Paris 
