90 NEW AND RARE SPIDERS. 



under stones near the top of Helvellyn on September 18th, 1890. 

 This was its first occurrence as a British species. 



LEPTYPHANTES TERRICOLA. 



Linyphia terricola C. L. Koch. Die Arachn. xii., p. 125, pi. 

 425, fig. 1,047, 1,048, and Blackwall Spid. 

 Gt. Brit, and Ireland ii., p. 231, pi. xii., 

 fig. 163. 

 zebrina, Menge. Cambr. Spid. Dors., p. 182. 



Bathypliantes zebrinus, Menge. Preuss. Spinn. i., p. 113, pi. 20, 

 Tab. 39. 



Many years ago (towards the end of Mr. Blackwall's life, and 

 when his eyesight had greatly failed), I repeatedly received from 

 him. examples of a Linyphia sent to him for determination 

 labelled Linyphia terricola Bl. These I could not distinguish, 

 except by a sometimes smaller size and paler colouring, from his 

 Linyphia tennis. I submitted these examples to Dr. L. Koch, who 

 agreed with me that they were specifically identical with L. tennis, 

 and, not possessing any of Mr. Blackwall's earlier types of L. 

 terricola, we concluded that his L. tennis and L. terricola were 

 only varieties of the same species. Subsequently, Dr. Thorell, 

 when preparing his work on " Synonyms of European Spiders," 

 examined some of these examples of L. terricola and came to 

 the same conclusion ; his remarks and determinations, Syn. Eur. 

 Spid., pp. 65-66, 1870, are, therefore, based on the supposition of 

 the identity of Blackwall's two species, L. tennis and L. terricola. 

 M. Simon's synonymic determination, Ar. de Fr. v., p. 317, are 

 also based on the same supposition, as likewise are those in Spid. 

 Dorset, p. 185. Last autumn, however, while hunting over some 

 hitherto overlooked bottles of spiders received after his decease 

 from Mr. Blackwall's collection, I found one containing specimens 

 in good condition labelled " Linyphia terricola" Bl. " types." 

 They had been set apart by Mr. Blackwall from his earlier 

 captures for the artist's use in illustrating his " Spid. Gt. Brit, and 

 Ireland." On examining these I found them to be quite distinct 



