SYRPHID^ — MUSCIDiK. 
Ins. 197 
Syrplius torvus and rectus queried respectively as the early and late 
representatives of one species ; but no intermediate form was found in 
300 specimens equivalent to S. vitripennis between topiarius and rihesii in 
Europe. 0. R. Osten-Sacken, Psyche, i. pp. 113-115. On habits of 
S. torvus, cf. p. 183. 
Volucella zonaria, inanis, and pellucens. Their larvaB found living in 
nests of Vespa germanica ; that of the first species described. They do 
not touch either larv£e or pupse of the wasp. Ern^, MT. schw. ent. G-es. 
iv. pp. 661 & 562. 
Allograpta, g. n., 0. R. Osten-Sacken, Bull. Buff. Soc. iii. pp. 49 & 63, 
Differs from other Syrphidce in the peculiar markings of its abdomen and 
in the eyes of the male being divided into two parts by a well-defined 
line, above which the facets are larger than below. For Scceva ohliqua, 
Say, and ? S. emarginata, Say. 
Didea laxa, sp. n., id. 1. c. p. 66, N. America. 
Syrphas rictus (? = rihesii, L.), p. 140, N. York, &c., contumax, p. 147, 
amalopis, p. 148, New Hampshire, spp. nn., id. P. Bost. Soc. xviii. 
Xanthogramma felix, sp. n., id. Bull. Buff. Soc. iii. p. 67, N. America. 
Brachyopa vacua [script. racua~\, p. 67, notata, p. 68, spp. nn., 1. c., 
Canada and United States. 
Criorrhina armillata, sp. n., id. 1. c. p. 68, Quebec. 
Arctophila jlagrans, sp. n., id. 1. c. p. 69, Colorado. 
Xylota vecors, sp. n., id. 1. c. p. 69, New Hampshire. 
Mixtemyia ephippium, sp. n., id. 1. c. p. 70, Mexico. 
PLATYPEZIDiR. 
Platypeza holosericea and siibfasciata : larvae described by E, Perris, 
Ann. Soc. Ent. Fr. (5) vi. pp. 231 & 232. 
CONOPIDJI]. 
Ptychoproctus complexus. Bigot (1859), ? = Stylomyia leonum, Westw'. 
(1850),^ ; J. M. Bigot, Bull. Soc. Ent. Fr. (5) vi. p. cx. ; at all events, 
the genera are identical. 
Bystropus monographed ; 11 species recognized, from Africa, Asia, and 
America. 3 are described as new, whereof one (crudelis) was bred from 
cocoons of a moth, ? Limacodes or Doratifera, found on a Mimosa tree at 
Natal. J. O. Westwood, Tr. E. Soc. 1876, pp. 571-579, pi. ix. S. emne- 
noides, Westw., figured, 1. c. figs. 13-15. 
Systropus crudelis, p. 574, pi. x. figs. 1-12, Natal, and var. from Damara 
polistoides, p. 575, Chantibon, Siam, tipuloides, p. 676, Sulu Island, 
spp. nn., id. 1. c. 
MusciDiE. 
Phasides. J. M. F. Bigot, Ann. Soc. Ent. Fr. (5) vi. pp. 389-400, dis- 
cusses the genera of this group, which he ranks as a “ Curie ” Phasidm, 
combining the “ Phasiennes ” and “ Gymnosomees ” united, and forming 
a connection between the “ Tachinaires ’’ or “ Dexiaires” and the “Ocyp- 
