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Sluys, 1989a

Habitus: The preserved specimen was 2.75 mm long and about 0.7 mm wide. From the rounded hind end the body margins run almost parallel towards the front end of the body. The anterior body margin is convex, and there is some indication of the presence of auricles. The body is unpigmented.

Alimentary System
The pharynx is about one-fourth of the body length and is situated in the posterior half of the body. The inner circular muscle layer of the pharynx is considerably thicker than the outer circular muscle layer. The mouth opening is at the hind end of the pharyngeal pouch. The posterior intestinal rami do not meet in the hind end of the body. The anterior intestinal ramus extends anterior to the eyes.

Male Reproductive System
There are about 17 testicular follicles on either side of the body, extending from the level of the ovaries into the hind end of the body. The follicles occupy the entire space between dorsal and ventral body surface.
Behind the pharyngeal pouch the vasa deferentia curve dorso-medially and enter separately the penis bulb. In the dorsal portion of the bulb the ducts unite to a broad common section, or ejaculatory duct, which opens at the tip of the penis papilla. The ejaculatory duct is surrounded by circular muscles and penetrated by the openings of penis glands.
The vertical, conical penis papilla is provided with a well developed subepithelial layer of circular muscles, which entally is bounded by a much thinner layer of longitudinal muscles. The musculature of the penis bulb is only weakly developed. The male atrium communicates with the small common atrium via a constriction.

Female Reproductive System
The small ovaries are situated at a short distance behind the brain. No traces of oviducts could be found.
The female copulatory apparatus consists of a female genital duct, which receives the secretion of well-developed shell glands. The posterior portion of the female duct expands to form a more or less rounded structure which is lined with a tall, nucleate epithelium. It may be that this rounded vesicle represents the copulatory bursa. The lining of the female genital duct probably consists of infranucleate cells, but the sections could not provide unambiguous information on this subject.
The vitellaria are well developed and extend throughout the body length.

The number of retinal cells in each eye cup could not be determined, but eye lenses are absent.

The animal was collected from a marine, interstitial habitat.

Canary Islands, Fuerteventura, Puerto de la Torre.

Material Examined
Z.M.A.: V.Pl. 753, Canary Islands, Fuerteventura, Puerto de la Torre, 28.05.1985, sagittal sections on 1 slide.

Procerodes (?) spec. 2