. The earthworms (lumbricidae and sparganophilidae) of Ontario . segment (Fr. segment m.) A portion of the body, along the anteroposterior axis, be- tween two consecutive intersegmental fur- rows and the associated septa. Segments are numbered with lower case roman nu- merals, i, ii, iii, etc., beginning anteriorly with the peristomium as i. The older sys- tem and some microdrile workers used up- per case numerals, I, II, III, etc. seminal receptacles See spermathecae. seminal reservoirs See seminal vesicles. Trr

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