20 Pysche [February 



spiracles of the first three segments contiguous to the lateral margin. Fore 

 coxae a little shorter than head and pronotum together; fore femora distinctly 

 longer than mesonotum, their spined part a little longer than the unarmed 

 basal part; tarsi reaching the first spine of the femur, distinctly shorter than 

 tibiae. Middle femora a little longer than head and thorax together; hind 

 femora almost one third longer than middle femora, reaching over the apex 

 of the abdomen by a little less than half their length. Length, cf 24 mm. 



Male: Abdomen from its base to near the apex of the third segment very 

 narrow, linear, centrally longitudinally ridged above, apex of third segment, 

 the fourth, fifth, sixth and genital segments jointly clavately incrassate and 

 dilated, the clavate part of the abdomen occupying about one fourth of its 

 total length, subrhomboidal as seen from above, its greatest breadth being 

 near the apex of the fourth segment, longitudinally and transversely strongly 

 convex beneath, the two basal thirds longitudinally convex above, apical 

 third concavely reflexed; fourth segment above immediately within the 

 lateral margins elevated in a subtriangular apically rounded lobe, the two 

 dorsal impressed lines of the segment parallel; dorsal lamina of last abdominal 

 segment triangularly projecting a little beyond the genitals, strongly reflexed, 

 acuminate at apex; connexival part of the last three ventral segments broad, 

 the spiracles remote from lateral margin, apical margin of fourth ventral 

 segment broadly emarginate in the middle, fifth ventral segment almost 

 straight at apex, apical margin of sixth ventral segment rather narrowly 

 sinuate in the middle; first genital segment very short, second long, recurved, 

 linearly impressed beneath from base to beyond the middle; genital claspers 

 moderately broad, not incrassate at apex. 



French Guiana. — My coll. 



Allied to Gh. filiventris Spin., but at once distinguished by the 

 longer metanotum, the black unicolorous legs, etc. 



