192 Ins. 
DltTBRA. 
SCENOPINID^. 
Pseudatrichia. g. n., Oaben-Sacken, 1. c. p. 276, fou Alrichia^ Lw., 1866, 
nec Schrank, nee Gould {Aves^ 1844). 
Scenojoinus hulbosus, sp. n., id. 1. c. p. 275, Missouri. 
AcROCEltlD.®. 
Observation on species described by Philippi & Westwood, and on 
Schiner’s divisions, &c. ; J. W. Dunning, Ent. M. M. xiii. pp. 261 & 262. 
Eulonchua sapphirinus^ p. 276, marginatus^ p. 277, spp. nn., Osten- 
Sacken, 1. c., California. 
Ptorodontia miadla, sp. n., id. 1. o. p. 277, Oregon. 
Ocnceahelluo, sp. n., Id. 1. c. p. 278, Texas. 
Opsebius diligens, ibid., "Vancouver Island, paucua, p. 279, California, 
id. 1. c., spp. nn. 
Oncodesjncultus, sp. n., id. 1. c. p. 279, New Hampshire. 
BOMBYLIlDiE. 
Thq references to Sgstropus in Zool. Rec. xiii^ Ins. p. 197, were acci- 
dentally misplaced among the Conopidee. 
Bombylii in large numbers flying in company with Anthophora at Pom- 
peii ; E. Olivier, P. E. Soc. 1877, p. ii. 
A revision of the genera in N. America north of Mexico, with observa- 
tions on their salient representatives, affinities, distribution, &c., and the 
synonymy, &c., of their species. Remarkable epimeral hooks in most of 
the genera of Anthracina are mentioned. Pcecilognathus, Jaennicke, = 
Phthiria. Argyramesba bred from nest of ? Pelopmus^ and other instances 
of parasitism cn Hymenoptera noted. Bombylius major in California. 
Toxophora parasitic upon Eumenes ; T. fulva, Gray, described (p. 267), 
Georgia. Osten-Sacken, h c. p. 225 et seq. 
The following new genera and species are characterized : — 
Dipalta^ p. 236. Differs from Exoprosopa in its strongly contorted 
second vein, and in the third antennal joint having no terminal style, 
more like that of Anthrax. Also allied to Diplocampta. For Dipalta 
serpentina^ p. 237, California, Colorado; also probably Anthrax para- 
doxa, Jaenn. 
TrioditeSy p. 245. Between the Anthracina and Bombyliina ; eyes of 
$ contiguous on vertex, praefurca very short. 2'. mus^ p. 246, Utah, 
California. 
Anastoechus^ p. 251. Closely allied to Systoechus^ and = div. 1 of Low 
of that genus ; underside of head densely pilose, hiding the root of 
antennas, epistoma, mouth, &c. A. barbatus, p. 252, Wyoming, California, 
Massachusetts. 
Pantarbes, p. 254. Differs from Bombylius and allies in having three 
submarginal cells. Allied to Mulio. P. capita, p. 256, California. 
