There is a blunt, somewhat triangular, projection of the vaginal wall, with a retractor muscle proceeding to the adjoining body-wall; this is the only evidence of the male organs before any of the surrounding tissue has been dissected away.
22.
The description of the reproductive system of " Ringicella ringens " as described by Fischer ( 1869 ) applies in all essential details to " Anostoma depressum " with the exception of a penis retractor muscle attached to the vas deferens.
23.
There is a long retractor muscle from the vesicle, and its stem is fixed internally to the back of the slug in the median line ( midline of the body ) near the caudal end ( tail end ) of the body.
24.
The long, narrow kidney with reflexed ureter and closed secondary ureter, the penial complex with distinct penis, epiphallus, vas deferens and flagellum, and the basic condition of the nervous and retractor muscle systems all serve to place " Amphidromus " in the Camaenidae.
25.
This is primarily because a common way of creating the set look is a tail " nicking " operation, in which the retractor muscles on the underside of the dock are partially cut ( the tail is not broken, as some people believe ).
26.
Pilsbry ( 1948 ) stated that " the enormously developed mantle, the large empty shell sac, and the insertions of the free retractor muscles along the margins of the foot cavity, instead of dorsally as in the Arionidae are special to the Philomycidae ".
27.
The notation 2, 3a, 3b, 4a, 4b and 5a refer to the numbers assigned to individual teeth . " aa " and " pa " are the anterior and posterior muscle scars and " ppr " is the scar left by the posterior pedal retractor muscle.
28.
The genital system is like this : there is an atrium of moderate length, the penis is short, with a very long vas deferens, the retractor muscle ( p . r . ) being inserted at or just beyond the slightly swollen penis, and proximally attached to the floor of the lung, as usual.
