MR. WALKER ON D1PTERA COLLECTED AT MAKESSAR. 165 
ticus. Abdomen ellipticum. Pedes mediocres. Alee longiusculse, 
latiusculae. 
Female. Body rather long. Head transverse, nearly as broad as the 
thorax ; epistoma not prominent. Antennae short, not near reaching 
the epistoma ; 3rd joint conical, much longer than the 2nd ; arista 
plumose. Thorax and abdomen elliptical, about equal in length. 
Legs moderately long and slender. Wings rather long and broad. 
216. feERACA signifera, n. s. Fcem. Fulva, thorace vittis quatuor 
metathorace vittis duabus abdomine maculis lateralibus nigris, alis 
obscure fuscis albo quinquesignatis apud costam nigricantibus basi 
flavis. 
Female. Tawny, shining • head testaceous about the eyes ; thorax with 
four black stripes, the outer pair incomplete ; metathorax with two 
black stripes ; abdomen w ith a row of black spots along each side ; 
wings dark brown, blackish along the costa, yellow at the base, with 
five lanceolate white marks, two of these resting on the costa, the third 
between them near the hind border, the fourth exterior, discal, slender, 
oblique, the fifth on the hind border near the tip ; veins black, tawny 
at the base ; discal transverse vein curved outward, parted by about 
one-fourth of its length from the border, and by much more than its 
length from the prmbrachial transverse. Length of the body 4 lines ; 
of the wings 8 lines. 
217. Seraca signata, n. s. Fcem. Testacea, longiuscula, epistomate 
guttis duabus nigris, arista plumosa, abdomine postice attenuato ma*- 
culis duabus lateralibus subapicalibus, alis eineraseentibus, costa ex- 
teriore nigricante. 
Female. Testaceous, shining, rather long ; head nearly as broad as the 
thorax, with a black dot on each side of the epistoma ; antenna; short, 
3rd joint elongate-conical, arista plumose; thorax elliptical; abdo- 
men attenuated hindward, longer than the thorax, with a black spot 
on each side of the 5th segment ; wings greyish, blackish along the 
apical half of the costa; veins testaceous, black towards the tips; 
discal transverse vein nearly straight and upright, parted by about 
one-fourth of its length from the border, and by hardly more than its 
length from the praebrachial transverse. Length of the body 3% lines ; 
of the wings 7 lines. 
Gen. Psila, Meigen. 
218. Psila bipunctifera, n. s. Feem. Testacea, facie nigro bipune- 
tata, antennarum articulo 3° Jongiconico, arista pubescente, abdomine 
guttis duabus apicalibus nigris, alis pallide cinereis flavo suffusis. 
Female. Testaceous ; head somewhat pilose beneath, with a black point 
on each side of the face ; 3rd joint of the antenna; elongate-conical, 
about twice the length of the 2nd ; arista pubescent ; thorax elongate, 
somewhat flat above; abdomen fusiform, a little longer than the thorax ; 
