i NOTES ON BRITISH SPIDERS. 



Adults of both sexes from S. Kelway, Lincolnshire ; from the 

 Rev. E. A. W. Peacock. 



V 



TETRAGNATHA NIGRITA, Lendl. 



Tdragnatha nigrita, Lendl., Cambr. Proc. Dors. N.H. and 

 A.F. Club, XVI., p. 115- 



Both sexes adult from Kew (Mr. Nicholson). 



EPEIRA DIADEMATA, Clerck. 



Araneus diadematus, Ok. Cambr., Spid. Dors., p. 266. 



A fine variety of this common spider, white with the ordinary 

 markings of a pinkish red, edged with deeper red on a yellow 

 ground, received from Mr. W. T. Lucas, Kingston-On-Thames, 

 Sept. 28th, 1898. 



EPEIRA MARMOREA, Clerck. 



Araneus marmoreus, Clerck. Aran. Suec., p. 29, pi. I., Tab. 2, 6. 



An immature female, which I conjecture to be of this species, 

 received from near Brigg, Lincolnshire. Mr. Pocock (Brit. 

 Mus.) tells me he has also received an adult female during the 

 past summer from Chippenham Fen, Cambridgeshire. This 

 species is generally considered to be the typical form of which 

 Epeira pyramidata, Clk. (E. scalaris, Walck) is a variety. Both 

 forms are found together in many European localities, but 

 in what relative abundance I do not know. E. pyramidata 

 has occurred, always sparingly, but in numerous widely 

 separated localities in Great Britain, though until the past 

 year I have never found nor received an example, of either sex, 

 referable to the typical form, E. marmorea. This seems to be 

 a remarkable fact. If E. pyramidata is only a variety of 

 E. marmorea, it has something of a parallel among birds in the 

 Hooded Grow (Corvus cornix), which is considered to be only a 

 form, or variety, of the common Carrion Crow (Corvis corone). 

 I have never heard of any intermediate varieties in respect to 

 these birds, nor have I seen any with regard to the * spiders in 



* Dr. Thorell, Syu. Eur. Spid,, pp. 10-13, however, records uu intermediate 

 variety iu Sweden, but " comparatively very rare." 



