Barriejamiesonia aberratus

First septum in 5 / 6 behind which all are present, 5 / 6 – 10 / 11 somewhat and equally thickened and conical with posteriad apex or 5 / 6 – 8 / 9 equally thickened and then gradually becoming thinner from 9 / 10 to 11 / 12 but 5 / 6 – 11 / 12 conical. Gizzard absent. Septal glands in V – VII depending from anterior face of 5 / 6 – 8 / 9, covering dorsal face of gut. Extra – mural calciferous glands absent. Hearts (commissures) in X (not seen in XI) or in XI (not seen in X). Nephridia holonephric, recognizable from VII. From VII to about XX they are big, leaf – shaped and surrounded by a layer of (? connective) tissue. Testes and their funnels, one pair, free in X. Male ducts running in A under peritoneum back to XIII where they fuse with the ectal end of the atrial chamber. Ovaries probably in XIII, ovisac, oviduct and ovifunnels not seen. Seminal vesicles two pairs. In one specimen the anterior are small, depending from 9 / 10 into IX and the posterior pair big depending from 11 / 12 into XII. In the other specimen both pairs are vestigial, the anterior pair depending from 9 / 10 into IX and the posterior pair from 10 / 11 into X. Prostates one pair originating in XIII. The prostatic duct swells up into a muscular (sheen present) bursa at parietes. The bursa somewhat spindle – shaped; from the bursa the duct gradually attenuates towards the gland from which it is not sharply demarcated. Prostate glands reaching to 19 / 20 on right and to 20 / 21 on left side in one worm. The greatest width of the bursa 0.25 mm, of the duct 0.1 mm and of the gland (in XIII) 0.27 mm. Genital marking glands, two pairs, circular, rather flat, acinous; free in the coelom in XIV and XV (specimen with GM on XIV, XV). Parthenogenesis is suspected.

Remarks. During the preliminary identification the specimens were thought by Ljungström to represent an aberrant ocnerodriline. No data on spermathecae were provided in the original description, and the only information refers to its empty nature. Distinction from Standeria is uncertain.

Distribution. Natal. N 41. Scottsburgh, Port Shepstone road. Aquatic, just below and near water’s edge.