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Show 302 MR. R. I. TOCOCK OX SOME [Dec. 2, hesitation, knowing them merely from the published figures and description. D. crosslandi apparently differs from both in the dentition of the mandible, the two outer teeth of the fang-groove being apparently equal and widely spaced in I). vorax, and close together and unequal in D. maxillosa, whereas in J). crosslandi they are unequal as in 1). maxillosa and widely spaced as in D. vorax. No doubt other differences will be discovered when examples of the three species are compared side by side. G. On some new Harvest-Spiders of the Order Opiliones from the Southern Continents. By It. I. P o c o c k , F.Z.S. (Text-figures 79-84.) [Received November 18, 1902.] The species described in the following pages are based upon specimens in the British Museum. Perhaps the most interesting part of the paper is the section devoted to the Insidiatores, where considerable additions to our knowledge of this group are to be found. The genera known up to the present time are confined to the southern continents-Diasia occurring in Chili, Tricenonyx in Chili and the Fiji Islands, Nuncia being from Stephen's Island, New Zealand, Truenobunus from Eastern Australia, Acumontia from Madagascar, Larifugct from Cape Colony, and Adce.um from Cape Colony and Stephen's Isl., New Zealand. To these I have added Lomanella from Tasmania and Sorensenella from New Zealand. It is also my good fortune to be able to point out the extension of the genus Tricenobunus to Tasmania, and of Tricenonyx to New Zealand and Australia, and to be able to add eight new species to the twelve already described. It seems superfluous to point out the evidence, supplied by the geographical data quoted above, for the former existence of a land-connection between South Africa and Austro-Zelandia on the one hand, and South America and Austro-Zelandia on the other. The former is attested by the existence of the genus Adceum both in South Africa and New Zealand ; the latter by that of Tricenonyx in Chili and Austro-Zelandia. Up to the present time, however, this group of Opiliones supplies no proof of a direct connection between South America and South Africa by means of an antarctic transatlantic extension of land. Suborder P l a g i o s t e t h i . Fam. P h a la xg iid v e . Genus P h a l a x g iu m Linn. P e a l a x g iu m l e p p a x ^e , sp. n. Colour variable: greyish brown, often marbled with darker |