D4 THE CANADIAN ENTOMOLOGIST. 
honey-yellow, anterior pair pale, posterior tibiae white, tips and a spot 
near base black, their tarsi black, white at base ; abdomen polished 
black, second and sometimes base of third segment Hone yay Non Length. 
16—.18 inch. 
Massachusetts ; Pennsylvania ; illinois Easily recognized by the 
white posterior tibiae annulated with black. It is closely allied to the two 
preceding species. 
‘MIcRODUS EARINOIDES. J. sp. 
2 .—Small, slender, shining black ; mouth pale piceous, palpi whitish ; 
metathorax rugose, sub-opaque; tegulae honey-yellow; wings hyaline, iri- 
descent; legs honey-yellow, posterior tarsi whitish, apex and spot near. 
base black, their tarsi black, whitish at extreme base: abdomen black, 
depressed, polished, basal sutures of second and third segments sometimes 
pale. Length .15 inch. 
Massachusetts ; Illinois. Resembles Zarinus /imitaris in miniature. 
Genus EARINUS, Wesm. 
EARINUS LIMITARIS. 
Bassus limitarsis, Say, Bost. Jour. Nat. Hist.,1., p. 250. 
g $.—Black, shining, with a short pale silky pile on face, pleura and 
metathorax ; mesothorax not trilobate, feebly punctured ; metathorax 
rounded, shining, disk with a narrow longitudinal groove ; tegulae whitish ; 
wings hyaline, iridescent, costal nerve and stigma black, nervures fuscous, 
areolet quadrate ; legs honey-yellow, posterior tibiae pale, apex broadly 
and a narrow annulus near base black, their tarsi entirely black ; abdomen 
narrow, depressed, polished, second segment with an oblique groove on 
each side behind which is a round swelling; sheaths of ovipositor thick, 
fringed with short dense black pubescence. Length .25—.35 inch. 
Canada; Mass.; Penn. ; Virginia; Illinois. Common. 
