June, 1908.] Guatemalan Hemiptera. 375 



end, median vein forked a little before the apex, the outer branch 

 merged in the apical margin of the corium, the inner branch run- 

 ning some distance into the membrane where it joins the inner 

 (claval) vein, forming a loop emitting a vein from its apex; apical 

 margin of corium extending from the median vein to the costal 

 margin; apical angle of corium acute. Wings folded under the 

 hemelytra in such a way that they scarcely reach the middle of 

 the abdomen. Abdomen about as broad as the pronotum 

 between the humeri, the dorsal side in the male a little shorter, 

 in the female a little longer than the pronotum, venter in the 

 male shorter, in the female longer than half the length of the 

 mesosternum ; the last segment of the connexivum tapering from 

 the base to the pointed tip, in the female projecting backwards 

 and reaching the middle of the first dorsal genital segment to the 

 margin of which it is closely attached; the first five ventral seg- 

 ments short, of equal length, the sixth ventral segment in the 

 female as long as the three preceding segments together, in the 

 male a little shorter, arcuately sinuate behind, more profoundly 

 so in the female; genital segments symmetrical, two such seg- 

 ments being visible in either sex from above and from beneath ; 

 first dorsal genital segment very much shorter in the male than 

 in the female; first ventral genital segment entire in the male, 

 in the female made up of two lobes contiguous along their whole 

 length ; apical genital segment in the male cleft in the middle when 

 seen from the side, knob-like in the female. Legs slender, middle 

 pair much the longest and inserted immediately under and a little 

 in front of the hind pair, their trochanters passing the apical 

 margin of the hind acetabula by half their length. Fore femora 

 reaching the last fourth of the mesosternum, scarcely incrassated, 

 slightly curved at the base ; tibiae considerably shorter than the 

 femora; tarsi shorter than half the length of the tibiae, first joint 

 a little variable in length, second joint three or four times longer 

 than first. Middle femora longer than the mesosternum, a little 

 thicker than the fore femora, tapering from the base to the middle ; 

 tibiae longer than the femora; tarsi a little longer than half the 

 length of the tibiae, two-jointed, first joint longer than second. 

 Hind femora longer and conspicuously thinner than the middle 

 femora ; tibiae a little longer than half the length of the femora 

 and more than twice shorter than the middle tibiae ; tarsi about 

 thrice shorter than the tibiae, two-jointed, joints of equal length. 



Apterous form unknown. 



Allied to Trepobates but at once distinguished by the struc- 

 ture of the head, antennae, corium and genital segments. The 

 hemelytra seem to be exceedingly brittle in this insect. They 

 are no doubt much longer than the abdomen but in all the six 

 specimens before me the membrane is broken off near its basal 

 margin making it impossible to give a complete description of its 

 veins. 



