392 MR. R. I. pocoCK ON 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 D. vorax, and close 

 together and unequal in D. maxiUosa, whereas in I), crosslandi 

 they are unequal as in D. maxillosa and widely spaced as in 

 D. vorax. No doubt other differences will be discovered when 

 examples of tlie three species are compared side by side. 



6. On some new Harvest-Spiders o£ the Order Opiliones 



from the Southern Continents. By R. I. PocoCK, 



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 occuriing in Chili, Trioinonyx in 

 Chili and the Fiji Islands, Nuncia being from Stephen's Island, 

 New Zealand, Trioinohunus from Eastern Australia, Acumontia 

 from Madagascar, Larifuga from Cape Colony, and Adceum 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 Tricenohunus to Tasmania, and of Tricen- 

 onyx 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 Triainonyx 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 trans- 

 atlantic extension of land. 



Suborder Plagiostethi. 



Fam. PnALAXGIIDyE. 



Genus Phalangium Linn. 

 Phalaxgium lepran^, sp. n. 

 Colour variable : greyish brovrn, often marbled with darker 



