304 



ARACHNIDA AT TEBAY. 



W. p. WINTER, B.Sc, 



Shipley. 



In spite of the bad weather a good deal of collecting was done 

 on the Yorkshire Naturalists' Union excursion to Tebay, and 

 I have to thank Messrs. Rosse Butterfield, T. Stringer, Cuth- 

 bert Hastings and others for their help in bringing specimens 

 to my notice. On Friday, August 2nd. the Lune Valley was 

 examined from Tebay to How Gill. The two banks are in 

 Westmorland until we reach How Gill from the stream in 

 which the left bank is part of Yorkshire. Most of the West- 

 morland collecting was done in this Gorge or in Tebay Gill. 



On Saturday, Cautley was explored. In the evening of 

 Monday and the morning of Tuesday, the Lune Gorge was 

 again visited, and on the latter occasion the foot of How 

 Gill, on the Yorkshire side, was carefully worked. 



At Cautley Spout it was noticeable that Drassus lapidosiis 

 (Walck.) was not uncommon under stones up to a considerable 

 altitude, though it is by no means common in most of Airedale. 



In several places a large mite (identified by Dr. George 

 as Rhyncolophus communis) was found in abundance on the 

 lichen Parmelia saxatilis. These ran very fast when disturbed, 

 but although careful search was made no definite cause of their 

 collecting together could be discovered. The same mite has 

 been found since then all over the areas of Airedale and Wharfe- 

 dale. 



In the spiders a notable absentee was Phyllonethis 

 lineata Clerck. Neither the type nor the variety redhnita 

 was found, but this may be explained by the fact that very 

 little search was made in the hedgerows and bushes in which 

 it usually occurs. In a number of cases {e.g. Drassus, Cluh- 

 iona, Coelotes, etc.), the young spiders had not long hatched 

 and numerous females of Lycosa were carrying their young 

 on their backs. 



In the following lists the separation between the counties 

 has been made. The names marked with an asterisk are those 

 of specimens collected in 1909 in Rawthey Valley and sent to 

 me by Mr. Booth. I have included these to make the list as 

 complete as possible. The spiders collected at the time of 

 the excursion number 49, the harvestmen five, with one false 

 scorpion and two mites, a total of 57 arachnids, the most note- 

 worthy being P. listen Sund. and Clubiona diversa Camb. 



WESTMORLAND AND YORKSHIRE. 



Amaurobius fenestralis (Strocm) §. I Tegenaria derhamii (Scop) $. 



Common.* | Leptyphantes blackwallii (Kulcz) 9, 



Collates atropos (Walck) 9. 0- I o- Common.* 



Common.* ] L. ierviccila (C.L.K.) q. Cautley. 



Naturalist, 



