J. CHESTER BRADLEY. 149 



oil the anterior edge of the region ; the other near the posterior 

 edge; beliind this area of modified reticulations the entire propo- 

 deum is hexagonaliy reticulate, except above the petiole, where it is 

 punctured or otherwise sculptured. 



Tlie hind legs are inucli shorter than in the other genera (Fig. 

 61), about equalling the whole length of the insect; the coxee have 

 an oblique groove without, much deeper than in Evania. The tibiae 

 and sometimes the tarsi have among the pubescence rows of fine 

 yellow spines; these are usually difficult to detect, and I have never 

 .seen any in which they are prominent, as they are in Acanthine- 

 vania, in which they are black and very much more abundant. H. 

 amuzonica Schletterer is said to have the spines^ distinct. The tibia 

 is thickened a little toward the apex ; the longer of the two apical 

 spurs varies in the different species from less to more than one-half 

 the length of the metatarsus ; the latter is longer than joints 2-4 

 taken together, and upon how much longer depend some specific 

 distinctions; the tarsal claw is of moderate or small size, with a 

 single tooth within (Fig. 54), shorter than the apical ray, and at a 

 little less than a right angle to it; the size and angle of the tooth 

 does not seem to differ in the genus, and hence offers no character 

 for specific distinctions. 



The wings are hyaline, sometimes with a milky lustre, and there 

 are present in the front wing (Fig. 86) only veins C, Sc -j- R -|- i\I, 

 the stigma, Cu,Cui, and M4 ; where the two latter join a short cross- 

 piece indicates the original position of the base of m cu and Cu: -f 

 M4. Faint lines indicate the original position of some of the now 

 atrophied veins, arranged as in Evania. The hind wings have only 

 part of the vein R -f- M present. 



The sculpture of the petiole is a matter of prime importance; 

 there is usually a tendency toward oblique ridging, at least along 

 the lower part of the sides, but above it may be nearly smooth with 

 oiilv a few punctures, or may.be finely longitudinally striate ; the 

 length of the petiole is usually about equal to that of the abdomen, 

 or sometimes less. The ab<lomen is orbicular, alike in the two sexes, 

 black, smooth and polished; the second segment extends about two- 

 thirds its entire length, the third segment is also broad, and the 

 remaining segments are very narrowly, when at all, exposed. The 

 ovipositor is not exserted, nor are the claspers of the male evident, 

 so that it is usually impossil)le to determine the sex without dissec- 



TEANS. AM. ENT. SOC. XXXIV. APRIL. 1908. 



