Plate XIII., p. 183, fig. A.--Silk lining of tube of _Atypus piceus_ (Sulz.), taken at Troyes in Champagne, and communicated to me by M. E. Simon; B, drawing of portion of nest of _Cyrtauchenius elongatus_ (Sim.) made after the description of the discoverer, and subject to his (M. E. Simon's) corrections. This is the only illustration in the present work not taken from an actual specimen. These figures are of the natural size. Plate XIV., p. 193.--Diagrams of the known types of trap-door nest. Fig. A, nest of _Atypus piceus_ (Sulz.); B, nest of cork type; B 1, the layers of silk with earth rims of which a cork door is composed; C, single-door unbranched wafer type; D, single-door branched w…
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