1905.] NATURAL SCIENCES OF PHILADELPHIA. 429 



the infra-ocular portion of the gena?; antennse equal to the head, pro- 

 notum and tegmina in length, filiform. Pronotum rounded; cephalic 

 margin subtruncate, caudal margin truncate with a narrow triangular 

 median emargination ; transverse sulci four in number, distinctly but 

 not deeply impressed, metazona less than half the length of the prozona; 

 lateral lobes slightly longer than deep, a slight sinuosity dorsad on the 

 cephalic margin, ventral margin with the usual cephalic emargination, 

 the caudal portion subrotundate, caudal margin faintly arcuate. Teg- 

 mina about twice as long as the metazona, elliptical, the dorsal margin 

 with a very slight emargination toward the apex. Abdomen very dis- 

 tinctly compressed, strongly carinate dorsad. Prosternum with a swollen 

 tubercle which is bluntly conic, little elevated. Interspace between the 



Fig. 27. — Dellia ovatipennis n. sp. Lateral view of type. 



mesosternal lobes broader than deep, slightly broader than one of the 

 lobes, the angles obtuse; interspace between the metasternal lobes 

 narrow, constricted caudad by the converging lobes. Cephalic femora 

 slightly shorter than the pronotum ; tibise equal to the femora in length ; 

 terminal tarsal joint about twice as long as the two basal joints together, 

 the tarsus about three-fourths the tibial lengtli. Median limbs similar 

 to the cephalic but slightly slenderer and longer. Caudal femora 

 rather short, very slightly exceeding the apex of the abdomen, greatest 

 width slightly more than one-fourth of the length, pattern of the pagina 

 distinct and regular, genicular region slightly inflated, lobes acute; 

 tibise slightly shorter than the femora, slightly sinuate in the proximal 

 half, external margin with six spines, internal margin with eight spines 



