410 PROCEEDINGS OF THE ACADEMY OF [June, 



SOME ARACHNIDA FROM NORTH CAROLINA. 

 BY NATHAN BANKS. 



The material upon which this article is based was collected by Prof. 

 J. H. Emerton, Mr. William Beiitenmiiller, and the writer, mostly in 

 the mountainous, western part of the State. Prof. Emerton, during 

 a collecting trip in the South in 1903, stopped at a number of localities 

 in North Carolina. His itinerary was about as follows: 



Durham, 8 and 9 July; Chapel Hill, 10 July; Salisbury, 12 July; 

 Moiganton, 12 July; Pineola, 14 July; Road to Roan Mt., 15 July; 

 Roan Mt. Summit, 15 to IS July; Lmville, 19 July; Blowing Rock, 

 19 July; Paint Rock, 20 July; Asheville, 23 July; Balsam, 24 July; 

 and Black Mt., Aug. 1 to 3. 



Mr. Beiitenmiiller collected for several seasons in the valley of the 

 Black Mountains for the American Museum of Natural History. The 

 spiders were sent to me for identification. The writer spent the last 

 two weeks of May, 1910, in the same valley visited by Mr. Beiiten- 

 miiller. This valley is on the north fork of the Swannanoa River, 

 about five miles from Black Mountain Station. The altitude is about 

 2.500 or 2,600 feet; and most of the collecting was done below 3,000 

 feet. Some specimens were taken on the summit of Mt. Graybeard, 

 a neighboring peak, 5,548 feet high. 



The spider fauna of these western mountains is similar in many 

 respects to that found in New York and New England. Some few 

 species, such as Hypochilus and Nemastoma, indicate the remnants of a 

 fauna once connected with that of the Northwestern United States 

 and China, or Mongolia. Why these few forms, so long resident in 

 these mountain valleys, have failed to spread, will, doubtless, long- 

 be a puzzling question. There is apparently nothing in their habits 

 to justify such a restricted habitat. 



HYPOCHILID^BJ. 



Hypochilus thorelli Marx. 



Paint Rock; Balsam; Swannanoa Valley, up Sugar Fork, hanging 

 under rocks near stream. 



SCYTODIDJE. 

 Scytodes thoracica Latr. 



Durham. 



