﻿24 4 [March, 1870 



lines, mostly entire ; davits with the first five or six lines straight and 

 parallel; corium with short irregular, delicate lines. Pales, ^, twisted, 

 roundly dilated on the upper side anteriorly ; 1st joint of the posterior 

 tarsi with a large, sub-trapezoidal, posterior, black spot. 



Head : above pale piceous, posterior margin black-brown with a very slightly angular 

 medial prominence ; on the crown, posteriorly, two very short, fine, punctate, 

 longitudinal striae, not extending quite to the base. Face pale yellow ; facial 

 depression in $ , deep, oval, extending forwards nearly to the middle of the 

 eyes. 



Thorax : pronotum rounded behind, anteriorly without a carinate elevation, with 

 7 — 9 fine, close, indistinct, slightly undulating, dark yellowish, transverse 

 lines, mostly entire, but sometimes shortened and confluent. Elytra : clavus 

 with fine, dark yellowish, transverse lines, the first six or seven straight, 

 parallel, then two shortened inwardly, and the remainder less regular, shorter, 

 and often turned down at the inner end ; corium with very fine, irregular, 

 short, faintly jagged, transverse yellowish lines, the posterior inner angle 

 nearly clear of markings ; membrane-suture broad, clear yellowish, the colour 

 extending round the apex, as a line, on to the marginal channel which is dark 

 livid, in certain lights pale inwardly ; membrane with fine, irregular, sub- 

 angularly twisted yellowish markings, sparse in the middle, the entire margin 

 black. Sternum black ; scapula} pale yellow ; pleurae black on the base, the 

 posterior half, and a line on the margin of the basal half, pale yellow ; para- 

 pleura; pale yellow. Legs pale yellow, — 1st pair, coxce outwardly black, apex 

 yellowish ; thighs, at the base, exteriorly with a blackish spot, extending upwards ; 

 tibice arcuate, black above, apex yellowish ; palce, S , the lower margin nearly 

 straight, the upper-side at first much constricted and flattened, then dilated 

 and rounded, turned broadly inwards, and abruptly rounded to the apex, so 

 that the upper surface exhibits a broad screw-form ; the colour at first brown 

 deepens to black on the dilated portion and is continued as a line almost to 

 the apex : 2nd pair, coxa black, apex yellowish ; thighs, apical third, especially 

 on the upper-side, fuscous ; tibim pale fuscous ; tarsi brown at the apex : 3rd 

 pair, coxce black, apex yellowish ; thighs broadly black exteriorly, less so 

 interiorly; tarsi with long, black cilia, 1st joint at the end with a large black 

 spot extending quite across, sub-trapezoidal, the inner side being longer than 

 the outer, and the upper margin sloping outwards ; 2nd joint clear yellow 

 with a very fine black line on the margins. 



Abdomen black ; connexivum pale yellow : beneath, in $ , the basal segments black 

 with the posterior margin and sides pale yellow ; the last two or three segments 

 dusky yellow ; in the ? all the segments pale yellow. Length 2| — 3 lines. 



In the form of the palae, $ , like G. prcsusta, but differs from that 

 species in being blacker, in the more delicate and shorter character of 

 the lines on the corium, in the darker colour of the middle and pos- 

 terior thighs, and in the sub-trapezoidal (not quadrate) shape of the 

 black spot on the posterior tarsi. 



A few specimens were taken last summer in the district of Strath- 

 glass, Inverness-shire, by Dr. F. Buchanan White. 



