72 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Other small membranous * flaps ' occur nearer the base of the extension 
and are merely suggested in the figure by the dotted outlines. Usually 
they are applied against the chitinous parts and do not show. 
7. Boettcheria fernaldi, n. sp. 
PI. 5, fig. 36; PI. 8, fig. 47. 
Type cf : Massachusetts Agricultural College. 
Paratypes (c?'): Massachusetts Agricultural College, one; U. S. 
National Museum, one (no. 18,426); American Museum of Natural 
History, one; Boston Society of Natural History, one; Gypsy Moth 
Parasite Laboratory at Melrose Highlands, Mass., two; Montana 
Agricultural Experiment Station, one; Cornell University, one; 
collection of author, two; collection of C. W. Johnson, one. 
Anterior face of posterior femur with two complete rows of bristles, 
an upper and an intermediate, bristles of latter very long and stout; 
usually bristles of lower row retained on distal half, but widely sepa- 
rated; anterior acrostichals present, not slender; three sternopleurals. 
Length: 5 to 12 mm., average 9 to 10 mm. 
Head. — Viewed from side parafrontals and genae with dark 
reflections. Breadth of front at narrowest part about two fifths eye 
width; cheek height approximately two sevenths that of eyes. Front 
very prominent; inner orbits of eyes on its upper part practically 
parallel or but slightly converging downward; sides of vitta slightly 
converging backward or often parallel, not drawn in at base. Second 
antennal segment blackish; third about twice length of second, 
generally a little broadened at tip; arista shortly plumose on basal 
half or two thirds. Back of head strongly convex, behind eyes with 
black cilia nearly down to foramen; metacephalon clothed with 
yellowish hairs just beneath foramen, otherwise its vestiture black. 
Palpi dark. 
Chaetotaxy. — Lateral verticals absent; vibrissae on a line with 
oral margin. 
Thorax. — Metanotum clothed with hair that inclines slightly 
backv^^ard. Sutural ridge bare. Hairs covering anterior spiracle dark 
brown basally, their tips somewhat lighter; those on anterior margin 
of posterior spiracle dark brown ; spiracular cover brownish with wide 
yellow border. 
Wings. — Bend of fourth vein at a more or less acute angle; ante- 
