194 Ins. 
DIPTERA. 
Cyrtopogon cymhalista^ California, plausor^ New Mexico, Utah, &e., 
p. 297, aurifex, p. 301, princeps and cretaceus, p. 302, evidens, p. 306, 
rejectas, nugatori positivuSy and audatoVy p. 307, rattua, and ceruaaatuay 
p. 308, nehuloy p. 309, California, pro/asas, p. 305, New Mexico. 
Daulopogon arenicolay p. 310, California. 
Empid-se. 
Hilara alpinay Lw., observed flying in numbers, near Berne, with a 
flake of silvery film aUached to each individual ; Osten-Sacken, Ent. M. M. 
xiv. p. 126. 
Clinocera fuacipenniay p. 324, New Hampshire, binotatay p. 325, New 
York, spp. nn., H. Loew, Z. ges. Naturw. xlviii. [1876]. 
Dolichopodidac. 
Dolichopus ungulatuSy Linn.,Meig, The yellow-legged ungulatay 
Jj.y identified with D. ceneuay Deg. ; the black-legged ungulata with Scellus 
notatusy F. Observations on D. longitarsia, Stann., which stands. Doew, 
1. c. pp. 9-20. 
Machcarum marUimimy Hal. Description, observations on economy 
and metamorphoses j S. 0. Snellen van Yollenhoven, Tijdschr. Ent. xx. 
pp. 56-63, pi. iv. figs. 1-5. 
Medeteru8y Fisch., recharacterized, and 27 species (8 new) recognized 
and fully described with synonymy, figures of detail, observation of 
doubtful species, and tables of $ and $ characters, F. Kowarz, Verb, 
z.-b. Wien, xxvii. pp. 39-76, pi. ii. 
PolymedoHy g. n., Osten-Sacken, Bull. U. S. Geol. Surv. iii. p. 317. 
Face prolonged downward and dependent, in the shape of a silvery 
ribbon ; cilia of the tegula in the male unusually long. P. flahellifery 
sp. n., ihid.y California. 
Hygroceleuthus crenatiiSy p. 312, ajfflictuSy p. 313, spp. nn., id. 1. c., Cali- 
fornia. 
DolicTiopua corax amdi pollex, spp. nn., id. 1. c. p. 314, California. 
Tachytrechus sanus, sp. n., id. 1. c. ,p. 316, California. 
Liancalus querulus, sp. n., id. 1. c. p. 318, California. 
Scellua vigil, p, 318, California, monstroaua, p. 319, British Columbia, 
spp. nn., id. l.c. 
Medeterus aeniculus, p. 46, S.W. Poland, dichcetua, p. 49, Galizia, 
Breslau, Munich, glaucellus, p. 51, Gorz, Garinthia, &c., obesua, p. 66, 
lBozQHy dichrocenia, p. 59, figs. 12 & 13, Asch, pinicola,p. 61, Austria, 
Bavaria, &c., dendrobcenua, p. 70, Austria and Germany, petrophilus,p.^i I , 
fig. 18, Carinthia, Italy, spp. nn., Kowarz, 1. c. 
Phoridjj. 
Platyphora, g. n., G. H. Verrall, J. L. S. xiii. p. 259. Of flat and 
broad shape, resembling small Sphccrocera : with no strong bristles on 
