130 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



length of the same in Euhallidaya. It seems remarkable that the 

 three known parasites of the Phasmidae should prove to be widely 

 separated generically. 



EUHALLIDAYA new genus. 



Palpi present, well developed, proboscis short, fleshy. First longitu- 

 dinal vein bare, sides of face on lower half bare. Apical cell ending close 

 to wing tip, fourth vein without trace of appendage at its bend, beyond 

 bend curving distinctly inward. Second aristal joint about as long as 

 broad. Arista incrassated on its basal third, eyes bare. Lowest frontal 

 bristles about opposite apex of second antennal joint. Ocellar bristles 

 present pointing obliquely forward. Posterior orbit and occiput linear, 

 cheeks nearly so, bearing on the lower edge a row of strong bristles point- 

 ing obliquely forward. Orbital bristles in both sexes consisting of six or 

 more pairs of .strong, proclinate, curved macrochsetae reaching nearly to 

 the apex of second antennal joint. Lowest frontal bristles nearly perpen- 

 dicular to front, upper f rentals curving backward. Anterior claws short 

 in both sexes. Type Euhallidaya severinii n. sp. 



Euhallidaya severinii new species. 



Length 4 mm., brownish, compact, wings hyaline. Female: Frontal 

 vitta opaque dark brown, scarcely distinguishable from parafrontals, 

 occupying two thirds width of front. Parafrontals slightly silvery polli- 

 nose, more apparent near base of antenna?. Ocellar triangle somewhat 

 shining, ocellar bristles strong, placed slightly in advance of anterior 

 ocellus being about as far removed therefrom as it is from the posterior 

 ocelli. Parafacials fuscous, slightly gray pollinose. Antennae blackish, 

 thinly pollinose, third joint a little more than twice as long as second, 

 sides straight nearly parallel, anterior apical corner right angled, poste- 

 rior corner gently rounded. Palpi and proboscis clear, yellowish. Occiput, 

 viewed from side, linear, thinly clothed with black hairs. Dorsum of 

 thorax thinly silvery pollinose, more pronounced anterior to suture. Four 

 dorsal vittse, wide, indistinct posterior to suture. Dorso-central bristles 

 three, sterno-pleurals three. Scutellum dark brown, thinly pollinose, 

 marginal macrochsetae long, in three pairs, apicals vestigial. Discals 

 irregular in number and position. Abdomen ovate, black, pseudomacu- 

 late on bases of second, third and fourth segments, pollen bordering spots 

 and on lateral margins of segments silvery, remainder of pollen brownish. 

 Posterior margins of segments black, shining, marginal macrochaetae borne 

 somewhat before posterior edge of all segments. No true discal macro- 

 chaetaj present. Abdomen clothed with coarse, black, reclinate hairs. 

 Calypters yellowish. Wings hyaline. A line of three bristles at base of 

 third vein. First posterior cell barely closed in margin of wing. Legs 

 black, middle tibiae bearing a single stout macrochaeta, on the front side 

 near the middle. Hind tibiae, subciliate on post-exterior edge. 



