eyes small
Archimacrostomum sublitorale Fig 2.jpg
The distal opening is subterminal on the convex side of the distal bent part. p. 15
Macrostomum sp Fig 9.jpg
Black eyes are embedded in the dorso-caudal tissue. p. 1002
Macrostomum australiense Fig 8.jpg
The stylet is a slightly curved funnel with a widened proximal base and a distal hook-like bend turned at an angle of about 90° from the main axis. p. 1001
Macrostomum bulbostylum Fig 19-22.jpg
Macrostomum japonicum Fig 26-28.jpg
eyes small, reniform. The penis-stilette is a curved and distally hooked funnel with a terminal opening. p. 204
Macrostomum gracile Fig 20-21.jpg
The stilette has the form of the typical Macrostomum funnel which contains a widend crenate base and which narrows to quite an unorthodox termination. The opening is terminal and is limited by a turned up and sharpened margin. p. 199
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
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
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