stylet shaft decoration absent
Macrostomum christinae Fig 5.jpg
The eyes are small with an irregular shape with dimensions of 8 to 12 micrometer. The penis stylet has its distal end bent at more-or-Iess a right angle to the main tube. This tip constitutes the thickened wall of the tube. The distal opening is situated at the heel of the stylet. p. 51
Macrostomum tuba Fig 10c-d.jpg
Macrostomum reynoldsoni Fig 3.jpg
The penis stylet is hook-shaped; it is slightly bent in another plane at a point indicated by the arrow. Its walls are not thickened at any particular point. Its distal opening is terminal. p. 53
Macrostomum rostratum Fig 10b.jpg
Macrostomum nairobiense Fig 4.jpg
The penial tube has a slight bend at its proximal end, and a distinct and sharp bend at its distal end. The distal tip of the stylet is blunt with a terminal opening. The walls appeared of uniform thickness along the length of the tube. p. 56
Macrostomum coxi Fig 1.jpg
Eyes 13 x 25 micrometer. The penis stylet is bow-shaped, gradually tapering in diameter towards the swollen distal end. The walls of the distal end are slightly thickened; the distal opening is displaced slightly to one side of the swollen end and is not exactly terminal. p. 55
Macrostomum sinyaense Fig 9.jpg
The distal opening is terminal and oblique, facing the concave side of the bow. The walls surrounding the distal opening appear to be very slightly thickened. p. 50
Macrostomum georgeense Fig 8.jpg
The penis stylet is a more-or-less straight tube which diminishes in diameter towards its distal tip; in fact the latter is slightly bent as shown in Figs. 5Band C. The walls of the tube around the distal terminal opening are slightly thickened. p. 54
Macrostomum amaniense Fig 7.jpg
Penis stylet consists of a funnel about 80-98 micrometer in length in slightly squashed specimens, curved in two planes and with a sub-terminal distal opening, the distal end is blunt and cowl (hood) shaped. p. 253