6z ON NEW AND RARE BRITISH ARACHNIDA. 



(paracymbium) at their base on the outer side and several 

 irregular black spiny projections at their extremity. 



The maxilla, fakes, and labium are yellow-brown, the sternum 

 suffused with dusky blackish. 



Abdomen oval, of a dark, dull blackish-brown colour, showing, 

 in spirits of wine, many pale irregular lines, and clothed thinly 

 with hairs. 



The female has the cephalothorax longer in proportion to its 

 breadth than the male, but resembles it in colour. The genital 

 aperture is characteristic, and has a somewhat sub-triangular 

 process, whose apex is directed backwards. 



Although I have here included this species in the genus 

 Tmeticus, I suspect that its ultimate place will be found among 

 the nearly allied Micronetas, a group furnishing the closest 

 resemblances among its numerous forms, and consequently 

 giving great difficulty in allocating them rightly. Examples of 

 both sexes were sent to me by Dr. A. R. Jackson from Stafford- 

 shire in October, 1902, and the female by Mr. W. Falconer in 

 January, 1904. 



Tmeticus similis, Kulcz. PI. A, Figs. 12, 13. 



Centromerus similis, Kulzcynski, Aranese Hungarise, torn. II., 

 Part I., p. 82, PL III., Fig. 25. 



Adult female, length i line. 



Cephalothorax rather longer than broad, oval, rounded in 

 front ; lateral marginal impressions at the caput moderately 

 strong ; height of clypeus rather exceeds half that of the facial 

 space. Colour yellow, tinged with brown and narrowly margined 

 with black. 



Eyes rather large, sub-equal, pearly-white with black margins, 

 the fore-centrals smallest ; posterior row curved, the convexity of 

 the curve directed backwards, the hind-centrals separated by 

 less than a diameter's interval, but rather further from each 

 other than from the hind-laterals. The front row has a very 

 slight curve, whose convexity is also directed backwards. The 



