50 THE CANADIAN ENTOMOLOGIST. 



In hatching the young larva' emerged from the bottom of the egg, 

 the clear yellowish-white colour becoming dark and blackish and the 

 cohesion of the empty cases being lost, the eggs fell gradually apart and 

 the mass finally disintegrated. 



The young larvie were carefully separated and grew rapidly, increas- 

 ing by the next morning fully 50 per cent, in length and doubling their 

 size within 24 hours. The adults began emerging in ten days from date of 

 oviposition, though an unavoidable lack of food material for a short time 

 may have slightly lengthened the normal time of development. 



TWO NEW SEED-INFESTING CHALCIS FLIES. 



BY CYRUS R. CROSBY, CORNELL UNIVERSITY, ITHACA, N. Y. 



Prodecatoma phytopho^a. n. sp. — Female: Length, 2.4 to 2.7 mm.; 

 abdomen, 12 to 1.3 mm. 



Head and thorax densely umbilicate punctate. General colour black: 

 face, cheeks and a ring around the eyes light yellowish-brown ; sides of 

 prothorax, lateral angle of scapulas, mesopleuraa and ventrd side of 

 abdomen more or less suffused with brownish : pronotum with two small 

 brownish spots sometimes obsolete. 



Head seen from above as wide as the thorax, concave behind, 

 strongly convex in front, a distinct frontal furrow present, in which the 

 front ocellus is placed ; seen from in front a little wider than high ; the 

 eyes small and widely separated. Face with a system of fine ridges 

 radiating from the clypeus. 



Propodeum with a median longitudinal depression, broad and 

 regularly concave; propodeum on the sides rugose-reticulate, within the 

 furrow densely, finely and distinctly reticulate-punctate ; anterior end of 

 depression with two smooth submedian pits, posterior end with a semi- 

 circular row of similar pits. Between this row and the insertion of the 

 petiole there is a ttansversely striate elevation. No median carina present, 

 except between the two anterior pits. Colour of propodeum black, 

 except that in some specimens there is a testaceous streak on each side of 

 median depression. 



Antennae dusky, under side of scape yellowish ; club and scape of 

 about equal length ; pedicel short ; funicle joints submoniliform, the first 

 slightly longer than the others ; club elongate-oval, obtusely pointed at tip, 

 the last two segments not separated by a distinct suture. Coxa; black, in 

 some specimens more or less yellowish ; rest of legs dull yellowish ; 



February, 1909 



