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BOLLETTINO 



DEI 



Musei di Zoologia ed Anatomia comparata 



della K. Università di Torino 

 N. 30€> pubblicato il 2 Settembre 1905 Vol. XX 



Remarks on the Gagrellinae Thor. 



a Group of Opiliones, with Descriptions of some new species froni Borneo. 



by C. J. With (Copenhagen) 



Dr. H. J. Hansen received the Gagrellinae herein described, which 

 were ali collected in Sarawak (North-West Borneo) by Mr. R. Shelford 

 from Dr. G. Nobili of the Naturai History Miiseum of Torino, to which 

 institution they will ultimately be returned. This sraall collection I 

 worked out on application of Dr. H. J. Hansen, and i nave added a few 

 observations and remarks on questiona, which were already touched 

 on in my paper « New and old Phalangiidae from the Indian Region » 

 (Journ. Limi. Soc. London, Voi. XXVIIL 1903, pp. 466-509). 



A. On lite Systenial/c and Scruni Characters, found in the Tarsi 



of the Palps. 



In a great many species of the Gagrellinae we limi a pronouriced 

 sexual difference in the armature on the tarsi of the palps in the males. 

 Thorell has noticed this character not only in Ceratòbunus annulalùs 

 Thor. (1889. 1, p. 618), as set forth in my paper (1903. 6, p. 473), but 

 also in Marthana calunniar Is Thor. (1891. 2, p. 723); Simon has later 

 on (1901. 5, p. 81) used the sanie structure in the definitimi of his 

 Gagrella illusa Sim. from Malakka; but neither of these two authors 

 realised, that the dentition of the tarsus of the palp provides a sexual 

 character of a more general valile. In my above quoted paper I 

 showed that a sexual, and to a certain degree also a system atic, cha- 

 racter is found in the presence and the arrangement of these tarsal 

 teeth on the palps of the males. In the following I will mention some 

 modifìcations, partly accompanied by figures. In the majority of 



