ig. A. — Silk lining of tube of "Atypus piceus" (Sulz.), taken at Troyes in Champagne, B, drawing of portion of nest of "Cyrtauchenius elongatus" (="Nemesia elongata") (Sim.) made after the description of the discoverer, and subject to his (M. E. Simon's) collections. This is the only illustration in the present work not taken from an actual specimen. These figures are of the natural size.