Atypus niger. % inch long. Deep black. Head flat and horn-like, marked with three impressed
dots. The legs short. It dwells in silk-covered tubular 2»
holes underground. Spiders of this group have eight eyes.
The Dysderide form an intermediate group, with
c four lung-slits; but the claws working sideways, and only six eyes. They live in silk tubes under stones. Dysdera interita. 5% inch long. Rust-colored. . Pylaris bicolor. 3 inchlong. Dark brown. Body part and first two pairs of legs black. Atypus niger. Dysdera interita. Pylarus bicolor,
SECOND GROUP.
Eyes unequal in size. Build no webs to catch their prey
in three or four rows.
on face and forehead. Those of the lower row always the smallest and the 4 four in center the largest. The legs are long and the last pair the 5
longest - - - - - - - - - (Page 13) Lycostde. 29.9%
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