ON NEW AND RARE BRITISH ARACHNIDA. 45 



Hahnia helveola, Sim. 



An adult female near Huddersfield (Mr. W. Falconer). 



Fam. THERIDIIOE. 



Episinus truncatus, Walck. 



Received from Hexham (Dr. Jackson), 1904. 



Theridion impressum, L. Koch. 



Adults of both sexes were found among coarse herbage 

 in a marshy spot at Warmwell by Dr. A. R. Jackson on 

 June 1 6th, 1904. The only previous occurrence of this 

 spider in England was recorded in "Proc." Dors. N.H. and 

 A.F. Club, Vol. XXIV., p. 152, where a figure of the palpus 

 is given (PL A, Fig. 2). It is very nearly allied to an 

 abundant spider, T. sisyphium, Clk., ^for a faintly marked 

 example of which the present species might easily be 

 overlooked. 



Onesinda minutissima, Cambr., PI. B, Fig. 2. 



Adults of both sexes were received from Dr. A. R. 

 Jackson (Hexham), and the female from Mr. W. Falconer 

 (near Huddersfield). The male has not before been 

 recorded. A figure of the palpus of that sex is given (PL B, 

 Fig. 2). 



Lithyphantes eorollatus, C. L. Koch. 



An immature female, found in Sussex, was sent to me by 

 Mr. Claude Morley. 



Laseola eoraeina, C. L. Koch. 



An adult male, from Suffolk, received from Mr. Claude 

 Morley. 



Laseola dissimilis, sp. n., PL A, Figs. 6, 7, 8. 



An adult male, which I believe to be new to science, was 

 found near Pennsylvania Castle, Portland, by Dr. A. R. 

 Jackson in June, 1904. (See description postea, p. 58.) 



