tullgren: chelonethi from camerun. 99 



great number of specimens all collected at Itoki in Camerun by 

 Dr. Yngve Sjöstedt. 



This species is without doubt one of the largest and most 

 beautiful ones of all. Of another reason this species seems 

 to me to be of a great systematic interest. The genus AtcDums 

 has been characterized by having no transversal furrows on the 

 céphalothorax. This is the most important characteristic 

 by which this genus differs from the gen. CJiclifcr. As mentioned 

 above a low impression above the second furrow is visible on 

 the fullgrown specimen, when the body has been moistened, and 

 when it is dry two very fine blackish stripes signify the furrows, 

 but — however — there are no veritable furrows. On a young 

 specimen the first furrow is comparatively distinct, but the second 

 furrow is not visible. By these facts it is evident that the genus 

 Atcvinus Canestr. is so closely related to the genus CJiclifcr 

 that it is not to be regarded even as a subgenus (conf. Balzan, 

 CJie7'7ictcs [Pscudoscorpioiics). Ann. Soc. Eut. Fr. T. 60. Paris 

 1891, p. 499.) 



Chelifer camerunensis n. sp. 



The body a little brilliant. Céphalothorax dark reddish- 

 brown. Dorsal segments olivaceous-brown. Pedipalpi very dark 

 brown. Cheliceres yellow-brown. Legs yellowish. 



Céphalothorax is much longer than broad, rounded in front 

 and a little truncated. The sides slightly divergent backwards-, 

 the hind-edge straight. The first transversal furrow very deep, 

 procurved at the ends. In the middle the céphalothorax has a 

 shallow longitudinal impression. The second furrow indistinct 

 but the céphalothorax a little transversally impressed. The 

 surface is granulated and has some few short simple hairs espe- 

 cially in the foremost part. Length 1,32 mm.; breadth 1,1 mm. 



No eyes. 



Dorsal segments of abdomen finely reticularly granulated. 

 The length-furrow most visible in the hind-part of abdomen. 



The hind edges of the segments with a row of short com- 

 paratively thick hairs. The hairs of the last segment very long 

 and slender. 



