14 



PROCEEDINGS OF THE ACADEMY OF 



[Jan., 



gonal; frontal costa compressed dorsad of the insertion of the antennae, 

 expanding between the antenna?, very slightly constricted ventrad of the 

 ocellus and thence expanding to the clypeal suture, moderately sulcate 

 for a short distance ventrad of the ocellus, slightly sulcate dorsad of the 

 same; eyes quite (c?) or moderately (9) prominent, in length about 

 equal to (J 1 ) or slightly shorter than (9) the infraocnlar sulcus; 



Fig. 2. — Trimerotropis arenaceus n. sp. Dorsal view of female type. ( X 2.) 



antenna? distinctly exceeding the head and pronotum in length. Pro- 

 notum with the greatest dorsal width about equal to the greatest 

 length; median carina distinctly elevated and cristate on theprozona, 

 divided rather deeply into two lobes of which the cephalic is twice 

 the length of the caudal, although but slightly higher than the caudal, 

 the outlines of the lobes being rounded, except for the caudal por- 

 tion of the margin of the cephalic lobe which is subangulate, varying 

 in the two types, median carina distinct on the metazona, but not 

 elevated except cephalad; lateral angles distinct, irregular cephalad, 



