478 PROCEEDINGS OF THE ACADEMY OF [DeC, 



side; genital segment quite deeply notched toward its ventral aspect. 

 Length 9 mm. ; width across the elytra about 4 mm. 

 Helicoptera septentrionalis Prov. 



A little narrower than pallida with the elytra less expanded, the 

 vertex shorter and the pronotum more deeply angularly emarginate. 

 Front uniformly pale testaceous brown; pleurae marked as in pallida. 

 Elytra more uniformly colored, the claval and costal nervures dis- 

 tinctly alternated; apical field with three brown points and there are 

 indications of three minute ones along the costal areole; abdomen 

 blackish, pale at tip. Last ventral segment of the female feebly 

 sinuated, rounded on either side, edge of the genital segment truncated, 

 scarcely if at all sinuated. Length S mm., width across the elytra 

 scant 4 mm. 



This species is very close to pallida, and without the two for direct 

 comparison it would be difficult to distinguish satisfactorily between 

 them. They are sufficiently distinct, however, and I feel sure that I 

 have rightly identified them here. 

 Helicoptera slossoni n. sp. 



Allied to variegata, but proportionately much narrower and with a 

 slightly longer vertex. 



Vertex about as long as the median line of the pronotum. Front 

 narrower at base which is rounded, as is the apex of the vertex; its sides 

 straight in the female, slightly arcuated in the male ; its color ferrugin- 

 ous brown in the female, yellowish in the male, scarcely irrorate, 

 abruptly darker at base. Produced anterior margin of the pronotum 

 subtruncated between the eyes ; lateral carinas almost straight, a little 

 curved anteriorly; median carinse short, basal; carina? of the mesono- 

 tum obsolete posteriorly. Vertex, pronotum and mesonotum fuscous 

 brown, minutely irrorated with pale; deflexed sides of the pronotum 

 deep black edged with white in the male and ferruginous yellow in the 

 female; disk of the mesonotum darker with the extreme tip pale. 

 Elytra fuscous brown quite regularly irrorated with paler, and marked 

 in the female with a fuscous spot on the stigma and several round 

 points on the disk, arranged three in a row on the costal areole, three 

 clustered in the apical field and two on the disk of the corium at about 

 the middle. Wings smoky with fuscous nervures. Lower surface and 

 legs in the female pale brownish varied with flavous on the sides of the 

 pleural pieces, the abdomen fuscous, pale on the apex and in places 

 on the edges of the segments; in the male the lower surface becomes 

 yellowish, with the pleural pieces edged with black above and the 

 abdomen more or less fuscous. Sides of the genital segment of the 



