A NEW TEOGLOBITIC QUADEANNULATE LAND-LEECH FEOM PAPUA (HIEUDINOIDEA : HAEMADIPSIDAE s.l.) Laurence E. Eichardson* [Accepted for publication 24th October, 1973] Synopsis A troglobitic quadrannulate land-leech, Leiobdella jawarerensis gen. et sp. nov., is associated with insectivorous bats in the aphotic zone of a cave. Its general somital annulation corresponds with that of Philaemon, but differs in having the recurrent limb of the female median region about half the length of the prociu-rent limb, the lambertian organs posterior, elongate cylindrical, the organ much longer than its duct, and the first pair of nephropores lateral on viii a^. A 4-aimulate land-leech from the aphotic zone of a cave near Jawarere, Papua, lacks general cutaneous pigment. The retinal cells of the eyes are pigmented ; otherwise the preserved animal is opaque white. The animal is the same in life. Although many species of land-leeches are found in the vestibule of many caves, this is the first record of a troglobitic land-leech. It is also the first record of a troglobitic leech among the euthylaematous leeches, which are characterized by a pharynx whose internal muscular ridges extend along its full length as dorsomedian and ventrolateral ridges, and by the fact both that somite v is the first complete somite and that it forms the lateral and ventral margins of the anterior sucker. Euthylaematous leeches form a very large and diverse assembly. It contains the majority of leeches with a pharynx and includes not only freshwater, amphibious, terrestrial and terricolous jawed and jawless macrophagous leeches which ingest smaller animals entire, but also freshwater, terrestrial and terricolous jawed sanguivorous leeches. The only previous record of a troglobitic leech is the aquatic, eyeless, opaque white Dina ahsoloni Johansson, 1913, found in some caves in Europe ; but there is now knowledge of a similar leech in a cave in Japan. D, ahsoloni belongs to the smaller compact group having a strepsilaematous pharynx : the internal muscular ridges as a dorsomedian and ventrolaterals anterior to somite vii, transposing posterior to this to be dorsolaterals and a ventromedian for the length of the pharynx ; with iv as the first complete somite forming the lateral and ventral margins of the pharynx. All leeches in this group are freshwater and macrophagous. Considering the great diversity of habit and habitat of the euthylaematous leeches, it is of interest that the first record of a troglobitic species is not that of a macrophagous leech with its capacity to feed on the lesser fauna within a cave but of a terrestrial jawed sanguivore so restricted in habit as to be dependent on a vertebrate. The 4-annulate land-leeches of the Australian Eegion are known to me in specimens from Tasmania, southern Victoria, eastern New South Wales, eastern Queensland, the Northern Territory, Papua and Lord Howe Island. They are a complex group which I have not yet been able to bring into satisfactory zoological order as a whole. Some few are distinctive in external meristic morphology, in the form of the auricle and in pattern. * 4 Bacon St., Grafton, New South Wales, 2460. Pboceedings of the Linnean Society of New South Wales, Vol. 99, Part 1
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