266 PSYCHE. [June .892. 



with Hippiscus throughout the centre I have had the advantage of seeing al 



of the continent, but is altogether want- those in the collection of Mr. Samuel 



ing on the Atlantic coast, no species Henshaw of Cambridge, and a full series 



occurring nearer than Iowa, Nebraska, of those belonging to Mr. Lawrence 



and Kansas ; none even reach the Mis- Bruner of Lincoln, Neb. to both of 



sissippi River. whom I am indebted for many cour- 



In the preparation of the present paper tesies. Dr. C. V. Riley has also kindly 



I have studied more than five hundred sent for my examination types of two or 



and fifty specimens, the larger part of three of Thomas's species of which I 



which were in my own collection, but was in doubt. 



TABLE OF THE SPECIES OF HIPPISCUS. 



A 1 . Antennae of male not attenuate or arcuate at the extremity ; carina of prono- 

 tum intersected only by the typical sulcus, which is obsolete 

 or rapidly fades out on the lateral lobes ; posterior femora gen- 

 eially more dilated and the inferior border more arcuate. 

 B 1 . 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. Lateral walls of normal discal scutellum of prozona 

 not cut deeply by an inner fork of its posterior sulcus, which 

 indeed often does not exist. Medina carina sharply distinct 

 throughout. Markings of the tegmina usually pantherinc 

 Mesosternal lobes separated by a piece rather quadrate than 

 truncato-cuneate, though the posterior corners of the lobes are 

 rounded, but narrowly and abruptly. . .(Hippiscus.) 



c 1 . Anterior extremity of scutellum of vertex not prolonged, narrowing rapidly, 

 in front (excl. H. pantherinus) as broad as or broader than half 

 the middle width ; hind margin of pronotum usually rectangulate ; 

 markings of tegmina distinctly pantherine. 

 d 1 . Frontal costa distinctly, often considerably, narrowed at its upper ex- 

 tremity, except in some 9 hardly or even less than a fourth the 

 width of the space between the eyes, the scutellum of the ver- 

 tex rarely furnished with transverse carinae, then generally 

 faint, and the longitudinal carina terminating in the centre with 

 rare exceptions ; tips of the wings in the J 1 rarely or but slightly 

 clouded ; extreme base of the area of the ulnar fork of tegmina 

 usually not involved in the darker markings ; calcaria of op- 

 posite sides of hind tibiae subequal. 



