PSEUDOSCORPIONS FROM FORMOSA. 1. 125 



from all others hitherto known. But there are also some diffe- 

 rences between the two species. In spite of the great similarity 

 of the palps, this new species differs from the African one in 

 having strong and broad hairs, and in lacking the protuberance 

 on the coxa of the IV. pair of legs. 



7. Olpium longiventer Keyserling. 



1886. Olpmnt longiventer Keyserling, Koch u. Keyserling, Die Avachniden 

 Australiens. II. Pag. 50; tab. 6, fig 9. 



Formosa: Takao, 4 9 adult, 3 young. 



Note. Alb. Tullgren has described a species, Olpium Ja- 

 cdbsoni, from Java. The specimens from Formosa agree just 

 as well with 0. longiventer (described from Australia) as with 

 0. Jacobsoni. The former has femur about 4 times as long 

 as wide, the latter at most 3 times as long as broad, so that 

 In the former the femur is somewhat more slender than in the 

 latter. The adult females from Formosa, in this respect, take 

 an intermediate position between the two forms mentioned, 

 femur being about 37^ times as long as wide. I have therefore 

 referred the Formosan specimens to 0. longiventer] all the 

 more because the two species may perhaps be identical or only 

 varieties of the same species. 



8. Ideobisium formosanum nov. sp. 



Two middle sized eyes on each side, less than one dia- 

 meter from each other, the anterior eye about one diameter 

 from the front margin. 



Colour. Céphalothorax, abdomen, and mandibles pale red- 

 dish brown, palps pale reddish, hand and fingers somewhat 

 darker, legs whitish. 



Céphalothorax about as long as wide, parallel-sided up to 

 the eyes, in front of these a little contracted; the anterior mar- 

 gin convex, with no tooth in the middle. The surface com- 

 pletely smooth and glossy, with a few dispersed, pointed hairs. 



