1891] MARYLAND ACADEMY OF SCIENCES. 143 



REMARKABLE NEW HOMOPTERA. 



By p. R. UHLER. 



Subfam, ISSIDA, Stal. 

 TiCiDA. New geii. 



o 



Allied to Acrisius Stal, but having a series of four small 

 spines on the posterior tibiae. Form obovate, moderately 

 depressed, not recurved at tip of abdomen. Vertex 

 short, subquadrate, triangularly emarginate both in 

 front and on the posterior margin, the lateral edges and 

 middle line carinately elevated, with a transverse sunken 

 area behind the vertex proper, in the outer angle of 

 which the ocellar tubercles are placed, and the basal 

 margin of this area is strongly arcuate-carinate, the 

 occipital space behind this forms a deeply sunken coUum. 

 Eyes large, prominent, almost spherical, somewhat 

 emarginated on the inner border. Front moderately 

 narrow, composed of two tablets, the upper one longer 

 than the lower, feebly bowed on the lateral, elevated 

 margins, the middle line widely and deeply sulcated, 

 with a stout double carina running down the length of 

 the groove, and becoming single upon the lower tablet, 

 this lower division thus becoming five-cariuate, but the 

 two intermediate carinae are arrested below, and leave 

 only three on the clypeus ; the clypeus as wide as the 

 front, and becoming spatulate below. Pronotum very 

 short, depressed, carinate on the middle, a little produced 

 into a wide area on the middle of the anterior margin, 

 each side of which it is broadly sinuated, the lateral 

 margins almost acutely oblique. Scutellum large, wider 

 than long, with the lateral angles particularly acute. 



