Tetrigine in the Oxford University Museum 235 
shorter than the third, the first two pulvilli of the first tarsal articles 
short and acute, the third pulvilli longer and somewhat flattened 
below but acute. 
One example from Cachabi, Ecuador, 8. America; 
Rosenberg ; Oxford Museum. 
Readily distinguished from the other members of this 
genus by the narrowed vertex, which is strongly narrower 
than one of the eyes and tricarinate, and also by the 
extended wings which pass beyond the pronotal apex. 
Genus OTumMBA, Morse. 
1. O. quadrata, sp. nov. 
Somewhat resembling scapularis. Pale ferruginous ; head little 
exserted, face oblique; vertex ascendant forward but very little 
narrowed, convex, advanced nearly as far as the eyes, the carine 
laterally little roundly compressed, at the front almost as wide as 
one of the eyes, middle carinate, sulcate on each side ; frontal costa 
declivous above, between the antenne little compresso-elevated, and 
sinuate below, between the posterior ocelli narrowly sulcate, evenly 
divergent forward to the median ocellus; eyes roundly conoidal, 
higher than the dorsum of pronotum ; posterior ocelli placed between 
the lower third of the eyes ; antenne inserted distinctly before the 
ventro-anterior border of the eyes. Pronotum rugose or often rugu- 
lose, depressed, deplanate between the shoulders; median carina very 
low and indistinctly sinuate, almost straight posteriorly and lengthily 
acuminate, extended beyond the knees of the hind femora; prozonal 
carinz distinct and parallel; humeral angles obtuse, bicarinate ; 
lateral lobes with the posterior angles strongly reflexed outwards, 
rectangulate, but convexo-truncate behind. Elytra small, acuminate 
toward the apices; wings fully explicate reaching just beyond the 
pronotal process. Margins of anterior and middle femora little 
compresso-undulate ; the posterior femora bearing a series of large 
tumose tubercles above on the outer faces, the antegenicular spine 
acute, but the genicular spine nearly wanting, posterior tibize very 
little‘ampliate toward the apices, the canthi sparingly spinose ; the 
first and second pulvilli of the first tarsal articles equal in*length; 
subacute, the third pulvilli little longer and more flattened below, 
Length of body entire, male and female, 12-13 mm.; pronotum 
11-12 mm.; posterior femora 5-6 mm. 
Five examples from Cachabi, Ecuador, S. America. 
Rosenberg; Oxford Museum. 
