sperm feeler distinct
Macrostomum appendiculatum Fig 7-8.jpg
Macrostomum appendiculatum Fig 7-8.jpg
Macrostomum virginianum Fig 2-4.jpg
Macrostomum virginianum Fig 2-4.jpg
The stilette is curved and obliquely truncated on its convex side. This conical tube is bent at a right angle near its proximal end. p. 27
Macrostomum beaufortensis Fig 5-6.jpg
Macrostomum beaufortensis Fig 5-6.jpg
Macrostomum bulbostylum Fig 32-35.jpg
Macrostomum bulbostylum Fig 32-35.jpg
Macrostomum appendiculatum Fig 1-5.jpg
Macrostomum appendiculatum Fig 1-5.jpg
Macrostomum beaufortensis Fig 10-15.jpg
Macrostomum beaufortensis Fig 10-15.jpg
Macrostomum glochistylum Fig 13-19.jpg
Macrostomum glochistylum Fig 13-19.jpg
The small reniform eyes are not embedded in the tissues of the ganglia. The penis-stilette is a long, curved funnel which extends from a widened proximal base to end in a slightly bent obliquely truncated terminus. The stilette termination is distinctly provided with a thin lip which projects slightly beyond the opening proper. p. 195 The sperm cell in this form is a spindler-shaped structure which is much shorter than usual for Macrostomum. Chromatin granules are present in the anterior region of the cell, while posteriorly directed setae are absent. p. 196
Macrostomum gilberti Fig 8-12.jpg
Macrostomum gilberti Fig 8-12.jpg
The penis-stilette in this Macrostomum is almost straight and is terminally curved in weakly pressed specimens. There are two flanges in the curved termination, the one on the convexity of the curve being longer than the one on the concavity of the curve. Thus, it appears, that this stilette, in which four lateroterminal borders may be seen, is cut in bias. p. 193/194
Macrostomum collistylum Fig 1-3.jpg
Macrostomum collistylum Fig 1-3.jpg
The stylet reaches its termination in a long sharpened point. p. 188 The sperm cells are elongate, undulating bodies which lack the postero-Iateral setae so common to the genus and are possessed of chromatin granules in the anterior part of the cell having the largest caliber. p. 189
Macrostomum phillipsi Fig 13-16.jpg
Macrostomum phillipsi Fig 13-16.jpg