446 
DIPTERA. 
Chrysojjila humilis, sp. n., H. Loew, L c. p. 379, San Francisco. 
Triptotricha (re-cliaracterized, and attributed to a section Psammo- 
rycterinaf p. 381) dincolor, p. 379, San Francisco, faaciventris, p. 380, 
Pennsylvania, id. 1 . c., spp. un. 
TflEREVIDiE. 
Thereva hirticeps, sp. n., id. 1. c. p. 382, San Francisco. 
Mydasid^e. 
A list of the species known in N. America ; 0. R. Osten-Sacken, Bull. 
Butf. Soc. ii. pp. 174 & 175 (28 spp., 2 genera). 
My das audax, Kentucky, carhoni/er, Cayuga Lake, p. 186, chrysostomus^ 
p. 187, N. Texas, spp. nn., id. 1. c. 
AsiLiDJi). 
A list of the Dasypogonina of N. America ; id. 1. c. pp. 176-185 (141 
spp., 28 genera). 
Stenopogon gratua and univUtatus, Lw., are sexes of one species ; Cyr- 
topogon inelanopleurtiH, Lw., = Evanaostua bimamla, Walk., $ , but 
Evarmostus cannot stand generically ; Dasypogon G-fasciatas, Say, is a 
Laphystia : H. Loew, B. E. Z. xviii. pp. 358, 365, & 373. As regards 
North American species, Lasiopogon, Lw., is re-named Daulopogon ; Hete- 
ropogon, Lw., re-named Anisopogon ; Ablautus, Lw., altered to Ah lautatus ; 
Archilestes, Scbiu., to Archilestris ; Blax to Blacodes \ Ilolcocephala, 
Jaennicke, is accepted for Discocephala, Macq. : id. 1. c. p. 377. 
Psilocurus, g. n., id. 1. c. p. 373. Differs from Laphyctis chiefly in 
having two strong sotoc at the hinder margin of the scutollum, the 3rd 
antennal joint roundish oval, &q. P. nudiuscdikts, sp. n., id. 1. c. p. 370, 
Texas. 
Leptogaster eudicramts, sp. u., id. 1. c. p. 353, Texas. 
Ospriocerus eutrophus, sp. n., id. 1. c. p. 355, Texas. 
Scleropogon helvolus, sp. n., id. ibid. Texas. 
Stenopogon morosus^ sp. n., id. 1. c. p. 356, Sierra Nevada. 
Cyrtopogon callipedilus, p. 358, montanns, p. 362, leucozonus, p. 364, 
Sierra Nevada, longimaiius, p. 360, San Francisco, id. 1. c., spp nn. 
Holopogon plueonotus, sp. n., id. 1. c. p. 366, Texas. 
Lasiopogon opaculuSj p. 367, Illinois, tetragranimus^ p. 368, Canada, 
spp. nn., id. 1. c. 
Saropogon combustus, p. 373, adustus, p. 375, spp. nn., id. 1. c. Texas. 
Laphria consimilis, sp. n., J. Q. Wood, “ Insects Abroad,” p. 758, 
fig. 501, Natal. 
Dolichopodidj;. 
Chrysotus. Monograph of the genus ; F. Kowarz, Verh. z.-b. Wien, 
xxiv, pp. 45.3-478, pi. xiii. C. neglectus^ figs. 1-5, hesm^ figs. 6-14, cilipes, 
