OF WASHINGTON. 73 



than the fourth, joints 5-8 subequal in length, each nearly as long as the 

 fourth, joints 9 and 10 almost connate, together decidedly longer than the 

 eighth. 



Pronotum half as long as the vertex at middle, pale, with a fine black 

 median line; dorsulum pale at base and on the sides, anteriorly with a 

 large reddish or light brownish spot which is sometimes divided; meso- 

 notum very little convex longitudinally, pale, with a fine, dark, median 

 line, and on each side thereof with two wide brownish or reddish stripes. 



Anterior wings slightly whitish, at tip not quite regularly rounded, the 

 greater part of the curvature being formed by the posterior margin; 

 veins reddish at the basal portion of the wing, more yellowish apically ; 

 cubitus about one-fifth longer than the discoidal part of subcosta; ptero- 

 stigma elongate-triangular, closed in front, slightly more opaque than the 

 rest of the wing; radius very slightly arching, forming a very oblique 

 angle with the radial part of subcosta ; stem of second fork parallel with 

 radius and nearly twice as long as the stem of first fork; first furcal more than 

 twice shorter than the second, and terminating obliquely upon the costa; 

 second furcal nearly straight, about as long as the fourth, and terminat 

 ing very obliquely upon the costa; third furcal distinctly shorter than the 

 fourth, which runs into the tip of the wing and forms a hardly percepti 

 ble angle with its stem ; first marginal cell more than twice longer than 

 high, second marginal cell much higher than its width at the margin. 

 Abdomen very robust, slightly widening apically. 



Male, unknown. 



Female: Genital segment very short and not beak-like; upper genital 

 plate broad, slightly longer than wide at base, moderately declivous, nar 

 rowing posteriorly, and broadly rounded at apex; lower plate represented 

 by a very short, transverse band which is widely emarginate behind. 



Length, to tip of wings, 3.2-3.5 mm. 



Type, No. 3794, U. S. National Museum (collection U. S. Dept. of Agri 

 culture). 



Hab., South Australia, on Eucalyptus leucoxylon (A. Koebele). 



Described from three female specimens, in which the abdom 

 inal structure cannot be fully studied. From a male of another 

 species of this genus which is before me in some ill-preserved 

 specimens, it can be seen that both the genital plate and the 

 forceps are simple and straight, the latter narrower and higher 

 than the former. 



In discussion Mr. Howard referred to the adoption by Mr. 

 Schwarz of the generic name Spondyliaspis of Signoret and 

 questioned whether it was necessary or even advisable to adopt 

 a name under such circumstances. He introduced as a practi- 



