Pomona Coiyr,EGE Journal op Entomoix)gy 777 



ol" the sutx'O.stal, very di.stiiirt tlirouKliuut. First tliscoidal straifjlit, second dis- 

 coidal iiuieh more slantini;' than the first and l)ent outwardly through the 

 a])i('al half so that the convex surface is towards the tip of the wing. Third 

 discoidal faint, iiuich less distinct than the other veins, twice forked, hase obso- 

 lete. First fork one-third distance and second fork two-thirds the distance 

 from the base of the vein to the tip of the last branch. All yellow. I'osterior — 

 Length 3.4 mm., width 1.1 mm., subcostal vein nearly straight, basal half with 

 yellowish insertion. Di.scoidals arising near the same i)lace, their bases being 

 0.2 nun. ai)art, on the subcostal about one-third the distance from the base to 

 the tip. They diverge strongly from their bases to the ti]is. both straight, well- 

 defined and yellow. Style — Obsolete. 



apterous viviparous female (Figure 246, A) 



Length of body 5.25 mm., width of abdomen 2.9 nun. Body — Widest just 

 in front of the cornicles and tapering off gradually to the head and more 

 abruptly to the pygidium ; robust, but nuich flattened. An exceedingly large 

 species. Covered entirely witii siiort, tine silk.y hairs. I'rcraUiny coIdi- — Gray 

 to a bluish white or brown. Entirely covered with a fine white powder. 

 Ground color of the body brownish, covered with black velvety spots. Ilead — 

 Small, nearly as long as wide, nearly quadrangular in shape, rounding in 

 front, wide between the antenna-, which are nearly on the anterior sides, brown 

 to pruinose. Eyes — Large, dark brown. Antennae — (Figure C) reaching 

 nearly to the second abdominal segment, hairy, rough, brown throughout ; 

 lengths of articles : I, 0.1 mm. ; IL 0.1 mm. ; III, 0.7 nun. ; IV, OM nun. ; V, 0.25 

 mm.; VI, 0.25 nun. (spur 0.06 mm.) ; total 1.7 nun. Articles I and II are co- 

 equal, III much longer than any of the rest, more than twice as long as either 

 IV or V, IV longer than V or VI, which are about co-equal. A single large 

 sensorium near apical end of IV and in the process of VI. Rostrum — Reaches 

 nearly to the middle of the abdomen, amber brown with dark tip. Thorax — 

 Gray, with two transverse dark depressions between the segments. These de- 

 pressions are nearly straight across between the pro- and meso-thoraeic seg- 

 ments, with lateral ends curved upwardly between the meso- and meta-thoracic 

 segments, and straight, but narrow in the middle between the thorax and the 

 abdomen. Abdomen — With small lateral marginal tubercles and large l)lack 

 median dorsal tubercle between the cornicles. This tubercle or cone is very 

 large, occupying nearly one-third of the dorsum, nearly as iiigh as the width of 

 the base. The tip is pointed. The l)lack abdominal spots are nearly circular 

 in shape and arranged in transverse and longitudinal rows. In longitudinal 

 rows the arrangement is as follows: a single spot in front of each cornicle, a 

 row of six large spots and one small spot on each side, just inside the base of 

 the cornicles, another row between the cornicles and the tubercle on each side 

 consisting- ,of six spots each, two median rows of smaller .spots, each consisting 

 of three each in front of the tubercle (the spot in each i-ow just in front of the 

 tubercle very small and often not present), and one small spot just behind the 

 base of the tubercle. The two posterior spots in the extreme lateral rows and 



