HIPPISCUS. 145 



Table for separating the Species 0/ Hippiscus *. 



A. Antennae of the $ not attenuate or arcuate at the extremity; 

 median carina of the pronotum cut only by the typical sulcus, 

 which is obsolete or rapidly fades out on the lateral lobes ; the 

 posterior femora generally more dilated and with the inferior 

 border more arcuate. 

 b. No distinct sunken biareolate area at the summit of the frontal 

 costa ; if vaguely present, separated from the costa below by 

 no carina or angle. Median carina of the pronotum sharply 

 distinct throughout. Markings of the tegmina usually 

 pantherine. Mesosternal lobes separated by a piece more 

 nearly quadrate than truncato-cuneate, though the posterior 

 corners of the lobes are rounded, but narrowly and 

 abruptly. (Hippiscus.) 

 c. Anterior extremity of the scutellum of the vertex not 

 prolonged, narrowing rapidly, in front (except in H. pan- 

 therinus) as broad as or broader than half the width at the 

 middle ; hind margin of the pronotum usually rectangu- 

 late ; margins of the tegmina distinctly pantherine. 

 d. Frontal costa distinctly, often considerably, narrowed at 

 its upper extremity, except in some females hardly, or 

 even less than, one-fourth the width of the space 

 between the eyes ; the scutellum of the vertex rarely 

 furnished with transverse carinse, then generally faint, 

 and the longitudinal carina terminating in the centre 

 with rare exceptions. Calcaria of the opposite sides of 

 the hind tibiae subequal. 

 e. Lower third of the tegmina free from dark markings, 

 except in the anal area; the markings hardly pan- 

 therine. Tegmina tapering ; the basal lobe of the 

 costal margin prominent, the width at this point 

 being fully one- third greater than at the tip of the 

 lower ulnar vein. Lateral carinas of the pronotum 



not very sharp 1. phcenicopterus, Germ. 



ee. Not more than the lower fourth of the tegmina, if any, 

 free from dark markings, these distinctly pantherine. 

 Tegmina subequal ; the lobe of the costal margin less 

 pronounced, the width at this point being scarcely 

 more than one-sixth greater than at the tip of the 

 lower ulnar vein. Lateral carinse of the pronotum 

 sharp. 



* This Table is simply that of Scudder, modified to cover the forms here mentioned. (See ' Psyche,' vi. 

 pp. 266-274, June 1892.) 



biol. CENTK.-AMER., Orthopt., Vol. II., March 1905. Uu 



