424 PROCEEDINGS OF THE ACADEMY OF [JuilG, 



the length of the prozona; lateral lobes slightly deeper than long, the 

 cephalic margin slightly sinuate, ventral margin rotimdate-emarginate 

 cephalad, subrotundate candad, the ventro-cephalic angle rectangu- 

 late, caudal margin slightly sinuate with the ventro-caudal anglerounded 

 obtuse-angulate. Exposed portion of the mesonotum slightly longer 

 than the metazona in the males, distinctly shorter in the female. Teg- 

 mina minute pads, not reaching caudad of the caudal margin of the 

 mesonotum in either sex. Abdomen compressed, carinate above; 

 apex of the male abdomen strongly recurved; cerci broad flattened 

 subequal plates, directed mesad, the tips flattened and acute when 

 viewed caudad, caudal margin of the cerci thickened and forming a sort 

 of ridge, which projects laterad of the body of the cerci; supra-anal 



Fig. 23. Fig. 24. Fig. 25. 



Fig. 23. — Dellia miniafula, dorsal view of apex of male abdomen. Fig. 24. — 

 Dellia ovati-pennis, dorsal view of pronotvim and tegmina of type. Fig. 25. — Del- 

 lia bimaculata, dorsal \'iew of apex of male abdomen. 



plate vertical in position ; subgenital plate on the dorsal aspect, bullate, 

 apically produced into a triangular process. Prosternum inflated 

 mesad, forming a transverse rounded ridge, no spine developed. In- 

 terspace between the mesosternal lobes slightly broader than deep, 

 equal to one of the lobes in width, the angles rounded; interspace be- 

 tween the metasternal lobes very narrow, trigonal, nearly closed 

 caudad. Cephalic femora slightly longer than the pronotum in the 

 male, subequal in the female, cephalic genicular lobe larger and more 

 rotundate than the caudal; tibise equal to the femora; terminal tarsal 

 joint much exceeding the proximal two in length, the whole tarsus 

 about three-fourths the length of the tibia. Median limbs similar ta 

 the cephalic but perceptibly more robust. Caudal femora slender in 

 the male and considerably exceeding the abdomen in its normal posi- 

 tion, in the female more robust but exceeding the abdomen by nearly 

 the length of the pronotum, in the female the greatest width is con- 

 tained over four times in the length and in the male the width is almost 



