430 Mr. R. M'Lachlan on Notiothauma. 



tremely depressed and flattened form wlien in a state of 

 repose would appear to indicate that it may hide itself 

 beneath the loose bark of trees (an idea also somewhat 

 favoured by its colour), and be nocturnal in its habits. 



Notiothauma differs from Merope in its much longer 

 and more slender (not thickened) antennse ; in the broader 

 and more coriaceous wings, with the very broad costal 

 area of the anterior pair, and much more dense reticulation ; 

 the erect spines on the wings and mesothorax ; also in the 

 structure of the maxillary palpi, if the figures of them 

 given by Westwood for Merope be strictly correct — a 

 point I am unable to decide, as I cannot discriminate 

 these parts in the only example (the type) of M. tuber 

 accessible to me. 



EXPLANATION OF THE EIGURES. 

 Plate X. Div. A. 



1. Notiothauma Reedi, 5 (somewhat enlarged). 



2. Portion of mesonotum (much enlarged). 



3. An antenna „ „ 



4. A maxillary palpus „ „ 



5. Apex of abdomen „ „ 



