54 ARKIV FÖR ZOOLOGI. BAND 2. N:0 8. 



Foiirth Legs. — A little shorter than the body, robust. 

 Femur somewhat more than two (between ^ji and ^/s) times 

 longer than deep (fig. 2 d). 



Flagelluin. — Wanting in the specimen examined. 



Measurements. — Body 2.9 mm.; palps 1.4 mm.; first 

 legs 2.9 mm.; fourth legs 2.6 mm. 



Colour. — Thorax and walking legs olive green; head, an- 

 tennse and palps olive green with a reddish tint; abdomen 

 greenish brown above, lighter below. 



Locality. — Tropical West Africa: Freetown; one speci- 

 men (E. Simon's coUection). 



Remarks. — Though the specimen is probably immature 

 I thought it allowable to describe it, as it may be of interest 

 to be acquainted with an African species; besides, the shape 

 of femur and the short claw of the palps together with the 

 long metatarsus of the foot of first pair of legs will probably 

 be sufficient for recognition and for reference of adult speci- 

 mens to the species. In the adult female the lower front 

 angle of trochanter of the palps is probably less obtuse, the 

 foot of first legs shorter in proportion to tibia, with the me- 

 tatarsus proportionately longer and the terminal joint shorter 

 than in the specimen described. — Cook mentions his Arta- 

 carus liberiensis from Liberia, but as he has not published a 

 real description or any figure the species can not be taken 

 into account and must be dealt with as a nomen nudum. 



2. Trithyreus suboculatus Poc. 

 Male, Feinale (and immature Specimens). 



Pl. 4., figs. 3 a— 3 1; Pl. 5., figs. 1 a— 1 c. 



1900. Trithyreus suboculatus R. I. Pocock, The Fauna of 

 British India, Arachnida, p. 121, fig. 39, A — C. 



Cephalothorax. — Head with an irregular påle or whitish 

 patch on each si de. Cephalic sternum much longer than broad 

 (fig. 3 b) . Second thoracic tergite with a rather narrow lon- 

 gitudinal line allowing some movability and with its surface 

 differing from the surroundings. 



Palps. — Unusually slender (figs. 3 c and 3 f ), in the 

 male half as long as the body and slightly longer than in the 



