1889. ] NEW TREE TRAP-DOOR SPIDER. 251 
genus. The ladium is longer than broad, somewhat narrower at the 
apex than at the base; the apex is rather rounded, and there are 
Structure of Dendricon rastratum. 
. Labium and portion of sternum, enlarged. 
. Portion of one of the falces, enlarged. 
. Portion of one of the maxillz, enlarged. 
. Leg of Ist or 2nd pair, enlarged. 
. Nest in bark, natural size. 
Ore Oo bo 
numerous small denticulations on the upper half. The maail/@ are 
also covered with similar denticulations. 
