OIMHOPTERA— AOBIDIDAE— PEZOTETTIX HUMPHEEYSII. 891 



large deep puncture in the channel exactly between the upper corners of 

 the eyes ; frontal costa very broad and flat, fading below ; sides parallel ; 

 lateral carinse quite distinct, diverging slightly toward the corners of the 

 face. Antennae of medium length. Pronoturn short, cylindrical, without 

 any lateral carinse; median carina scarcely apparent; expanding slightly, 

 but regularly, posteriorly ; posterior sulcus about two-thirds back from the 

 front, leaving the posterior lobe very short ; the posterior margin truncate 

 on the back, or curved slightly forward ; the anterior lobes smooth on the 

 sides, marked with distinct shallow depressions on the disk ; the posterior 

 lobe distinctly and densely punctured ; the posterior lateral margin slightly 

 curving inward as it ascends. Elytra mere figments on the sides, not meet- 

 ing on the back, extending across two segments, spatulate. Wings appear 

 to be entirely wanting. Cerci minute and tapering to a point ; the super- 

 anal plate rather large, triangular, broadly rounded at the apex, marked 

 transversely so as to give it the appearance of being a part of two segments. 

 The prostemal spine stout, conical, and somewhat transverse. 



The male differs in being much smaller and less robust ; the abdomen is 

 but moderately enlarged at the apex ; the cerci are much longer than in the 

 female, flat, and enlarged at the base and apex, the apical portion being 

 somewhat broader than the basal portion ; the anterior apical angle is rounded, 

 while the posterior one is somewhat acute, dentiform ; the super-anal plate 

 is bicarinate longitudinally ; sub-anal plate slightly elongate and cone- 

 shaped. 



Color (after immersion in alcohol). — Yellow, with black and brownish 

 markings ; male and female similar. The general color throughout is a 

 bright yellow, therefore I will note only the markings on this yellow 

 ground. A broad piceous black stripe on the sides of the pronoturn, 

 extending from the anterior margin to the posterior sulcus, witli an 

 oblique yellow stripe extending- through it from the lower anterior angle to 

 the middle of the upper margin, thus leaving a triangular black spot above 

 in front immediately behind the eye ; the sides of the meso- and meta-thorax 

 striped obliquely with black ; a black spot on each segment under the 

 upper margin of the elytra. All of these black markings are margined by 

 a brighter yellow than that which surrounds it. Dorsum of tlte antei'iorlobes 



