66 Dr. A. S. Packard, Jr's Revision of the 



wing. The outer median space is obsolete. The second internal space 

 is long and narrow, the outer side being nearly always perpendicular to 

 the costa, or bent, the upper part being oblique. 



The secondaries are long and narrow; the discal cell is large, ex- 

 tending beyond the middle of the wing, closed without by a recurrent 

 which is bent outwards in the middle; the internal cell is narrow and 

 short. 



Legs short and stout, fore-tibiae often armed with vexhillate expan- 

 sions, and the tarsi broad, flat and short, with lateral setae on joints of 

 tarsi; the middle and hind femora are swelled somewhat, tibiae subtri- 

 gonate, rather stout and generally with tubercles terminating in setae, 

 arranged for the most part in irregular rows. The hind tarsi are rather 

 stout, the lateral lobes of the tarsi terminate in setae and are somewhat 

 produced. 



Abdomen sessile, short, elongated oval, somewhat flattened, 9 much 

 broader and shorter than % . The form of the first ring is very per- 

 sistent, being triangular, broad next to the second, the rings are very 

 continuous with the centre of the sides of the abdomen. The ter- 

 minal ring in 9 is often mucronate, the flat triangular area above being 

 bounded on each side by a lateral carina. Coloration, black, basal joints 

 of palpi, tibiae, prothoracic scutellum and meso-scutellum, and lateral 

 oval spots on the sides usually yellow. 



Sexual differences. — The family form is most persistant in 9 9 . 

 The variation being greater in % , the head is narrowed behind, and 

 in front narrowing towards jaws, making the jaws shorter in % and the 

 clypeus much narrower ; % most slender bodied, the legs (fore) simple, 

 and the abdomen longer, tip simple. The % is considerably smaller 

 than the 9 • 



Eyes in Anacrabro are very broad above and have a distinct sinus 

 opposite the ocelli, they extend a little behind the middle of the head 

 as usual. The situation and relative distance apart of the ocelli do not 

 afford good generic characters in these genera, since there is great con- 

 stancy in these respects. They are farthest apart and arranged in a 

 low triangle in Anacrabro. In Blepharipus they are placed in a 

 more equilateral triangle. The ocelli often vary in relative size, none 

 of the three being absolutely equal in size; this seems to be an indi- 

 vidual variation. 



Front in Anacrabro is hardly triangular, the lower region of the 

 groove being but little more than one-half as wide as the triangular 

 region above, which is narrower than usual, and the sides are not con- 



