INSECTA. 547 
p. 338, and P. alternans, Ijoew, ibid., and Mon. N. Amer. Dol. p. 339, from 
New York. 
Tachytrechus melaleucus, Gerstficker, 1. c. p. 29, from Berlin ; T. kowarzii^ 
Mik, Verb, zool.-bot. Ges. in Wien, Bd. xiv. p. 796, Taf. 21. fig. 6, from 
Hungarj. 
IlercostoniK^ unicohr, Loew, Mon. N. Amer. Dol. p. 117, pi. 3. fig. 9, from 
the Hudson’s Bay territory. 
Argyra. Of this genus the folloAving new North American species are 
described by Loew, Mon. N. Amer. Bol. : Argyra nigt'ipeSf 1, c. p. 127 ; A., 
albiventt'is, 1. c. p. 128 ; and A. cylindrical 1. c. p. 132. 
Argyra aristata, Gerstacker, 1. c. p. 31, from Berlin j A. incompta, Gerstacker^ 
k c, p. 146, from the Bavarian Alps. 
SynaHTirus palmarisj Loew, 1. c. p. 135, pi. 4. fig. 17, from Sitk?i. 
Xiphandrium sagax, Gerstacker, 1. c. p. 146, from the Bavarian Alps, 
Porphyrops longijyes, Loew, Berl. ent. Zeits. 1864, p. 96, and Mon. N, 
Amer, Dol. p. 340, from New Hampshire, 
Euiar^m equesy Loew, Mon. N. Amer. Dol. p. 164, from Venezuela. 
Diaphorus lamellatusy Loew, 1. c. p. 166, from the Middle States. 
Clirysotus. Four new North American species are described by Loew, 
hlon. N. Amer. Dol : Ckrysotus cornutus, 1. c. p, 179 ; C. vividuSy 1. c. p. 178 ; 
C. suhcostatus, 1. c. p. 181 ; and C. picUcornis, 1. c. p. 184. 
Thrypticus (g. n.) smaragdumsy Gerstacker, 1. c. p. 44, from Berlin. 
Sympyoim tertianusy Loew, 1. c. p. 187, from Sitka . — Sympycnm plantat'iSf 
Gorstiicicor, /. c. p. 148, and S. spiculatm, Gcrst. /. e, p. 150, from the Bavarian 
Alps. 
Campsicnemus claudicans, Loew, Mon. N. Amer. Dol. p. 194, pi. 6. fig. 33, 
from Sitka. 
SceUus aviduSy Loew, Mon, N. Amer. Dol. p. 207, pi, 7. fig. 37, and S. JUU 
ferns y Loew, 1. c. p. 209, from the Hudson’s Bay Territory . — SceUus dolicho-> 
cerusy Gerstacker, 1. c. p. 46, from CEland, 
Ilydt'ophorus innotatuSy Loew, Mon. N. Amer. Dol. p. 212, pi. 7. fig. 38, 
from Sitka. — Ilydr-ophortis rtfiharhisy Gerstacker, I, c. p. 37, from Berlin. 
Saucropus tenuis y Loew, 1. c. p. 228, from the United States. 
Psilopus suhrectusy Walker, Proc. Linn. Soc. vol. vii. p. 209, and P. mode- 
ratus, Walk, ibid., from Mysolj P. seticornis, Walk. /. c. p. 234, from Ceram. 
Phorid^. 
Phora palUpes is described among tuberivorous Diptera by Laboulbene, 
Ann. Soc. Ent. Fr. 4« serie, tome iv. p. 88. 
Phora hergetistammUy sp. n., Mik, Verb, zool.-bot. Ges. in Wien, Bd. xiv. 
p. 793. Near Vienna, in putrid snails. 
New genera : — 
Trisometopia (sic), Lioy, Atti 1st. Yen. 3*^ ser. tom. x. p. 77. Allied to 
Phora ; forehead with a transverse line of biistles directed forwards ; palpi 
broad; legs setulose; wings with the outer margin shortly ciliated. Sp. 
Phora thoracica (Lat.). 
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