14 BULLETIN OF THE 



islands, but here particularly conspicuous from its generally deeper color and 

 sharper delimitation, and from the nearly complete absence ot any infuscation 

 of the veins, so that the effect of the maculation is intensified by its contrast 

 with the subhyaline, or, in the basal half of the tegmina, the pallid ground. 

 There is little contrast between the ground color of the prozona and metazona, 

 excepting that the lateral lobes of the prozona are generally infuscated, the 

 dorsal area of both being nearly uniformly light colored flecked with fuscous ; 

 in two females, however, especially in one of them, the flecking is so much 

 grosser on the prozona as to approach closely to what prevails elsewhere. All 

 have a distinct light colored maculation near the summit of the lateral lobes. 

 The apical half of the humeral and axillary areas is very faintly infumated, 

 the costal margin is luteous throughout, and the apical margin of the anal area 

 not at all, or in the slightest degree, infumated ; it is here only that the speci- 

 men purporting to come from Indefatigable Island differs, in that the apex of 

 the wing is decidedly infumated, though not nearly sn densely as in the speci- 

 mens from Indefatigable Island or some individuals from the otliers, as already 

 noted; and it would indicate a range of variation in this point on Duncan 

 Island far less than is found on some of the others. The antennae are luteous 

 at base, becoming gradually infuscated apically. The conspicuous dark macu- 

 lation of the otherwise light tegmina and the feeble infumation of the apex of 

 the wings, with the nearly uniformly colored dorsum of the prothorax and 

 the relatively small size, are the distinctive marks of Duncan Island forms. 



The other islands are poorly represented by specimens, and less can lie said 

 about them confidently. From each of two of them we have three specimens, 

 but only in one case, James Island, both sexes. Here we find an anomaly 

 in the striking contrast in the size of the sexes, which a larger number of speci- 

 mens would probably alter; the single male is far the smallest fnim any of the 

 islands, while the females are of the average size. In general they agree best 

 with the specimens from Indefatigable Island, — in the maculation and ground 

 color of the tegmina, the infumation of the wings, the uniform lightness of the 

 antennae, and in the coloration of the prothorax, except in the single point 

 that the bright dash on the lateral lol)es is tolerably distinct in all, and in one 

 very fairly marked. There is however a single female from Albemarle Island 

 which is almost a duplicate of one of the females from James Island in every 

 particular except the apical infuscation of the antennae in the former. 



The specimens from Barrington Island, females only, vary but little. In all, 

 the maculation of the tegmina resembles that seen in Indefatigable Island 

 specimens, and the ground color and neural infuscation is the same in one; but 

 in the others the apical half is distinctly hyaline, and the infuscation of the 

 veins sliglit. The wings remind us of the Duncan Island type ; tlieir apical 

 infumation is very slight, and there is no distinction worth pointing out. The 

 contrasted coloring of the prozona and metazona are here more marked than 

 in any other specimens, and the liri.nlit spot of the lateral lobes is most distinct. 

 The antennae are luteous only at the base, and almost immediately become black- 



