The Genus Scaphoideus. 



197 



The specimens in hand taken alone might be considered a 

 distinct species, but while there is a decided difference in 

 genitalia from what I conceive to be typical consors, the shape 

 of the head, and the probability that absence of markings is 

 due to suffusion of color, makes it seem best to consider it, 

 for the present at least, as a variety. 



Scaphoideus mexicanus n. sp. (Plate X, Fig. 6, 6a, 6b.) 



Resembles scalaris, but with vertex more rounded in front 

 and the genitalia elongate. Length to tip of elytra 9 , 5.25 

 mm ; cT 5 mm. 



Vertex wider than long, length five-sixths of width, rounded 

 in front, and margins rounded over to cheeks. Front narrow ; 

 clypeus elongate and widened at tip; lorae long, reaching 

 almost to margin of cheek. Pronotum wide, twice as wide 

 as long, lateral margin rather short, rounded, hind margin 

 truncate or scarcely emarginate. Clavus with cross veins 

 from the outer vein to claval suture conspicuous, apical ends 

 of the claval veins distinctly bent, nodal vein arising from 

 outer anteapical cell. 



Color and markings like scalaris ; vertex yellow with fus- 

 cous lines in front and two rather prominent spots near center, 

 curved light bands less distinct than in scalaris ; front yellow- 

 ish with suture and the semi-arcs of front fuscous. Elytra 

 subhyaline with elongate whitish spots on clavus, discal and 

 inner anteapical, which alternate with fuscous fasciae. Apical 

 cells with fuscous spots and margin. 



Genitalia: 9, last ventral segment long, lateral angles 

 rounded, apex truncate ; pygofers long, slender, a few light 

 bristles along the margins, and larger darker ones near the 

 tip. cf, valve short but distinct, hind border with obtuse 

 process at center; plates narrow, elongate, triangular, outer 

 border straight, reaching about three-fourths the length of 

 the pygofers before becoming flaccid, the flaccid tips extend- 

 ing beyond the tip of pygofer. 



Four specimens collected at Orizaba Mex. (H. O.), January, 

 1892, and one specimen Frontera, Tobasco, Mex. (Townsend). 



In shape of vertex this comes nearer consors, but in other 

 points it more closely resembles scalaris. Consors, scalaris, 

 this form, and the var. imicolor of consors form a closely related 



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