ARANEIDA— THERIDIID^. 61 



Taken in abundance from Mayfield's and Truett's Caves and also 

 from a cave at Glasgow, Kentucky. 



Therldlum porterl Banks. 

 Rep. Ind. Geol. Surv., xxi, 1896, 203 (Porter's and Truett's Caves). 



Only 4 individuals of this species were found. Three females were 

 taken at " 11, " two at the edge of the roof and another within an angle 

 formed between a shelf and the wall. The last-mentioned individual 

 had a fairly well constructed irregular web. The others had only small 

 threads of web. The fourth individual was under a stone near the 

 same place and was without a web. 



The front middle eyes in this species are black and somewhat reduced. 

 Of four specimens two had the front middle eyes scarcely more than 

 one-half the diameter of the other eyes, and in the fourth they were 

 about three-fourths as large. 



Taken also in Truett's Cave. Described from specimens in Blatchley's 

 collection from Porter's and Truett's Caves. 



T. eigenmanni Banks (cf. Ulrich, 1901, 97) is another species of 

 this genus from caves. It comes from San Marcos, Texas, and is some- 

 what dull in color. 



Nestlcus carteri Emerton. 



Emerton, Am. Nat., ix, 279, pi. i, fig. 28 (Carter Cave, Kentucky). Packard, Mem. 

 Nat. Acad. Sci., IV, 1888, 16, 57, 87, pi. 15, fig. 28 (Carter Cave, Kentucky) . Marx, 

 Proc. U. S. Nat. Mus. XII, 1889, 521. Blatchley, Rep. Ind. Geol. Surv., xxi, 

 1896, 204 (Porter's, Coon, and Marengo Caves). 



A single specimen was taken at "25" under a stone. Habits like 

 P. subterranea and E. infernalis. Taken in Truett's Cave also. Its 

 color is very light gray. The front middle eyes are quite small and 

 black; the other eyes are possibly a little less than the usual size. 



Packard (1888, 57) obtained another species of this genus {Nesticus 

 pallidios Emerton) in Fountain Cave, Virginia. It was light in color 

 and like N. carteri had the front middle eyes black and reduced in size. 

 Still another {Nesticus cordatus Bilimek) is described from Cacahuamilpa 

 Cave in Mexico (cf. Packard, 1894, 732). 



In European caves occur three other species of this genus, two of 

 them confined to caves. Those confined to caves are dull in color and 

 show some decrease in size of the eyes, in one of them the front middle 

 eyes being absent and those still present barely discernible. 



Argryrodes trigonum Emerton. 



Emerton, Trans. Conn. Ac, VI, 23, pi. 5, fig. 1. Marx, Proc. U. S. Nat. Mus., xii, 

 1889, 524. Emerton, Common Spiders, 1902, 124, figs. 292-296 (New England). 



Taken twice within the cave at "2." Common in New England 

 and all Eastern United States. 



