242 Ins. 
DIPTERA. 
Laphria taphius, Walk., ? = dimidiata , Macq. ; Osten-Sacken, l. c. 
p. 109. 
Dasythrix leucophcea , Arrib&lzaga, recjescribed by him ; An. Soc. Arg. 
xiv. p. 138. 
Mallophora nificaiida, pluto, robusta , Wied., ventralis and rafiventris, 
Macq., tabulated ; id. 1. c. pp. 142 & 143. 
Phellus glaucus , Walker, figured by Waterhouse, Aid, ii. pi. cxxiv. 
Asilus barbarus, Fabr., noticed from Sardinia ; Costa, Atti Acc. Nap. 
ix., 11, p. 40. 
New genera and species : — 
Myelciplius , Bigot, Bull. Soc. Ent. Fr. (G) ii. p. xci. Allied to Dasy- 
poyon ; type, M. melas , sp. n., 1. c., California. 
Rhathimomyia, Arrib&lzaga, An. Soc. Arg. xiv. p. 135. Allied to 
Atomosia ; scutellum convex, sloping, rather prominent, without setae, 
hind femora thickened, with a few short thick bristles below; hind tibiae 
not ciliated, abdomen ob-triangular, less convex above (in $ ), or ovate 
and somewhat depressed ( $ ), with the apex not broadly rounded, 
but rather obtusely pointed ; 7th segment distinct, especially in $ , male 
organs slightly exserted. Type, R. nitidula , sp. n., 1. c. t Buenos Aires. 
Leptogaster princeps, Osten-Sacken, B. E. Z. xxvi. p. 102, Philippines. 
Damalis immerita and vitripennis , id. 1. c. pp. 105 & 106, Philippines. 
Damalina semperi and cyanella , id. 1. c. pp. 107 & 108, Philippines. 
Stichopogon peregrinus , id. 1. c. p. 108, Philippines; S. dziedzichi } 
Schnabel, Deutsche E. Z. xxvi. p. 9, Poland. 
Laphria phalaris and pseudolus, Osten-Sacken, l. c. pp. 109 & 110, 
Philippines. 
Emphysomera aliena, id. Z. c. p. Ill, Philippines. 
Deromyia weyenberglii and placula , Van der Wulp, Tijdschr. Ent. xxv. 
pp. 93 & 94, Argentine Republic. 
Laparus argentinuSj id. Z. c. p. 95, Argentine Republic. 
Holopogcm bidlatus , id. Z. c. p. 100, Argentine Republic. 
Hypenetes asiliformis , id. Z. c. p. 101, pi. x. figs. 2-4, Argentine Republic. 
Proctacanthus virginianus , pi. x. figs. 5 & 6, Virginia, p. 109, senectus , 
p. 110, and brevistylatus, Argentine Republic, p. Ill, id. l.c. 
Erax bilineatus , id. Z. c. p. 115, Argentine Republic. 
Epithriptus albisetosus , id. Z. c. p. 116, Argentine Republic. 
Holcocephala Uruguay ensis, Arrib&lzaga, An. Soc. Arg. xiv. p. 133, 
Uruguay. 
Mallophora vegeta , id. Z. c. p. 140, Buenos Aires. 
Doryclus guentheri , id. Z. c. p. 186, Buenos Aires. 
Ceratotamia rhopalocera t id. Z. c. p. 189, Buenos Aires. 
Nemestrinjdj:. 
Hirmoneura obscura , Meig. Habits and transformations described; 
Handlirsch, Wien. ent. Z. i. pp. 224-228. 
Trichophthalma landbecJci } Phil., and amcena , Big., = latipalpis t Macq., 
of which an amended description is given; T. vicarians, Schin., = T. 
