DIPTERA. 429 
Cuvex excrucrans, Foem. 
Fulva ; proboscis testacea, apice fuscescens ; antenne fusce, basi testa- 
cea; abdomen fuscescens, fasciis testaceis ; pedes testacei, tarsis 
pallide fuscis testaceo fasciatis ; ale subcinerea, venis testaceis sub- 
ciliatis ; halteres apice fusci. 
Tawny. Proboscis testaceous, long, straight, slender, brownish at 
the tip. Antenne brown, testaceous towards the base, a little shorter 
than the proboscis. Pectus paler than the thorax. Abdomen brownish, 
with a testaceous band on the hind border of each segment. Legs tes- 
taceous, long, slender; tibie darker than the femora; tarsi very pale 
brown, with a testaceous band at the base of each joint. Wings very 
slightly grayish ; veins testaceous, slightly ciliated. Halteres testaceous, 
with brown knobs. Length of the body 4 lines; of the wings 7 lines. 
Noya Scotia. 
Cucex TERRENS, Mas. 
Fusca, argenteo tomentosa; thorax fusco bivittatus; abdomen nigri- 
» cans, subtus argenteo fasciatum, lateribus pubescentibus ; pedes nigri- 
cantes, femoribus apice albis, tarsis albo fasciatis ; ale subcineree, 
venis Fuscis subciliatis ; halteres testacei apice fusci. 
Brown, with silvery white tomentum. Proboscis slender, straight, as 
long as the palpi. Antenne with whitish reflections. Thorax with two 
brown stripes. Abdomen blackish, very pubescent on each side, with 
silvery white bands beneath. Legs blackish; femora with white tips ; 
tibie partly with whitish reflections; tarsi with white bands. Wings 
grayish ; veins brown, slightly ciliated. Halteres testaceous, with brown 
knobs. Length of the body 3 lines; of the Wings 5 lines. 
South America. 
