20. ARACHNOIDEA. 



4. Opiliones 



by 



WILLIAM SÖRENSEN. 



With one plate. 



Allowance made to the fact that unlil now but 65 species^ of Opiliones are known 

 from Africa (apart irom the Mediterranean countries) it must be granted that the 23 spe- 

 cies described below, make a rather considerable addition to what was formerly known. 

 As Dr. Yngve Sjostedt on his zoological exploration of Kamerun has gathered 12 species, 

 more than the half part of the species known from the Ethiopean part of Africa are due 

 to Swedish investigations. 



All the 23 species (about 660 ex.) which Dr. Sjostedt has gathered at Kilima- 

 ndjaro and Meru are new. 



With one exception, they belong to families, already known from the Ethiopean 

 part of Africa. This exception is made by the genus Palpipes which does not only 

 form a new family but even a highly remarkable family, the tarsi of the first and second 

 pair of legs being bijointed, as is generally the case with young animals, on the first and 

 second stage, of the remaining Opiliones Laniatores. For only in the highly remark- 

 able family of the Oncopodoidm Thor, this stränge feature is found. It therefore ought 



' LOMAN, J. G. C. : Beiträge der Kenntni.s der Fauna von Süd-Afrika (Zoo1. Jahrb. XI, 1898, p. 515) 

 has given a list of the a6 species of Opiliones formerly known from the Ethiopean part of Africa and he 

 has described 9 new ones. From the earlier 26 species must, however, be deducted Stygnopsis {'' Stygniis") 

 valida W. S. which is not native in Africa but in America. And after the publication of his paper are 

 described: Guruia frigescens LoM.; G. levis LoM.; Cristma crassipes Lom.; Mitraceras crassipalpum LoM. 

 (Seychelles); Conomma fortis Lom.; Monorhahdium singulare LOM.; Hypoxesfus levis Lou.; Dicoryplms furviis 

 LoM.; AcantJiophorrys pedinatus LoM.; Polycoryphvs asper LoM.; Cwlobtinus melanacanthiis LOM.; Ihalonius 

 Insrriptus LOM. (Seychelles); I. himaciilatus LoM. (ibid.); I. Karsclii LoM. (ibid.); Holozosier ovalis LoM. 

 (ibid.); Centrohunus Braueri LoM. (ibid.); Pyramidops pygnuva Lo^\.\ Aaidorsum alhimanum IjO'M.. (^f^chnWes); 

 described in: Zool. Jahrb., Syst. Abt., XVI, 1902, p. 103 — 216. — Item: Phalangium leppanm PoC; Ph. 

 (Rhampsinitus) Spenreri Poe. ; Ph. (Rh.) felifrons Poc; Ph. (Rh.) Leighi Poc; Ph. (Gtiruia) pialmafimanus 

 Poe. ; Adwiun areolatmn Poe.; Acumontia rostrata Poc. (.Madagascar); A. Majori Poe. (ibid.); Hinzuanius 

 Leighi Poe.; described in: Proc. zool. soc. London 1902, II, p. 392 — 413. — Item: Phalangium Boltoni 

 Poe.; Acumontia echinata Poc. (.Madagascar); Ac. Robertii Poc. (ibid.); described by PoeoCK in: Ann. a. Mag. 

 nat. bist., V. ser., II, London 1903, p. 433—450. — Finally PinreUin illnstrnns H. J. H. & VV. S. (Two 

 Orders of Arachnida, 1904). 



Sjöstedts Kiliitiandjaro Meru Expedition. 30. 8 * 



