BUFFALO SOCIETY OF NATURAL SCIENCES 65 



sides of the clypeus a little less arcuated and the cheeks broader and more 

 rounded outwardly. Pronotum unusually short, the hind margins feebly 

 concave. Last ventral segment of the male short, a little angularly exca- 

 vated behind; valve large, ovately triangular, the apex obtusely angled, 

 plates a little longer than the valve, broad, sides nearly straight, slightly 

 rounded to the blunt apices, edges fringed with long bristles; pygofers con- 

 siderabty exceeding the plates, obtuse at apex. Last ventral segment of the 

 female short, broadly triangular, at apex obtuse; pygofers stout, scarcely 

 exceeded by the oviduct. 



Color dark fuscous brown, vertex becoming almost black toward the 

 apex, marked before the eyes with a rather broad transverse white band that 

 is slightly angled and is crossed by from three to five longitudinal dark lines; 

 slender edge of the vertex and a spot at the tip white. Front pale or clouded 

 with fuscous with a white mark at base. In the female from Jamaica the 

 face is clear yellow clouded with fuscous on the cheeks exteriorly, within 

 which are some sanguineous irrorations. Pronotum and scutellum irrorated 

 with pale, the former with four pale longitudinal lines indicated, the latter 

 with the extreme tip and two marginal spots on each side pale. Elytra 

 white, nervures fuscods, areoles rather strongly reticulated and in part irro- 

 rated with brown, the oblique costal nervures nine to twelve, strong. In the 

 male the el} 7 tra are darker showing the usual white spots quite strongly; the 

 inner apical areole with a white lunule bordered with brown, which forms 

 an annulus when the elytra are closed and is most conspicuous in the female. 

 Wings suffused, with fuscous nervures. Length 4 mm. 



Described from one pair: a male from Durango, Colorado, 

 received from Prof. Ball, and a female taken by me at Mande- 

 ville. In most of its characters this species is close to frontalis. 

 The longer and more clearly marked vertex and the generally 

 paler colors may not be characters of specific value. The geni- 

 talia, while of the same general pattern show differences that it 

 seems to me entitle this to specific distinction. The plates of 

 the male are longer and more rounded toward the apex and the 

 last ventral segment of the female is shorter and more 

 triangular. 



Platymetopius nanus n. sp. 



General appearance of frontalis but much smaller. Dark chocolate 

 brown above; entire face pale yellow. Vertex a little more acute at apex 

 than va. frontalis but similarly marked with an abbreviated longitudinal 

 pale dash at apex, two approximate parallel ones between this and the eye, 

 and a pair of smaller ones at base placed on either side of the dark median 

 line; clypeus distinctly longer than in frontalis, considerably surpassing the 

 cheeks, quite strongly constricted toward its base; lorae narrow, outer edges 

 of the cheeks rectilinear. Pronotum almost truncated before between the 

 eyes, very minutely and obscurely irrorated with paler, and showing five 

 indistinct longitudinal lines of pale points. Scutellum with the basal angles 

 blackish and carrying a pale point at the extreme tip of the angles, and 



