DIPTERA. 
425 
Loew, ibid., Wisconsin; M. mutica, Loew, ibid., and M. inculta, I..oew, 1. c. 
p. 153, Middle States ; M. pingtiis, Loew, ibid., English River, Maine ; M. 
scalaris, Loew, 1. c. p. 154, Middle States ; M. trichonota, Loew, 1. c. p. 155, 
Oolumbia District ; M. fallax, Loew, 1. c. p. 156, and M. sigmoides, Loew, ibid.. 
Middle States; 31. quatuornotata, Loew, l.c. p. 157, Maryland; 31. polita, 
Loew, l.c. p. 158, New York; 3d. monoclicda, Loew, ibid., Columbia Dis- 
trict; and 3d. procera, Loew, 1. c. p. 159, New York. 
Mgcetophila frigida, Boheman, (Efvers. Kongl. Vet.-Akad. Forh. xxii. 
p. 576, Spitzbergen. 
Sctara sciophila, Loew, 1. c. p. 160, Columbia District ; S. ochrolatis, Loew, 
ibid., New York* 
Sciara militaiis, Nowicki, Verb, naturf. Ver. in Briinn, vi. Abbandl. p. 58, 
pi. 1 (larva, pupa, larva? on the march, and details of imago). 
Sciara. Winnertz (Verh. zool.-bot. Ges. in Wien, xix.) describes the fol- 
lowing new species of this genus from the Ilarz : — S. quercicola, p. 657, in 
decayed oaks; S. nigrescens, p. 658, among beeches; S. montana, p. 659, 
among beeches ; S. helingi, p. 661, on conifers; S. hercynitB, p. 663, on larches 
and firs ; S. sykicola, p. 664, on black poplars and larches ; S. hdaria^ p. 665, 
in cowdung. 
Trichosia hehes, Loew, t. c. p. 161, New York. 
Trichona winncrtzi., Nowicki, Verh. naturf. Ver. in Briinn, vi. Abhandl. 
p. 70, pine-forests of Kopaliny. 
Bibionidae. 
M K (Verh. zool.-bot. Ges. in Wien, xix. pp. 35 & 36) notices the cha- 
racters of the two sexes in Scatopse transvcrsalis (Loew), and figures the 
wings (/. c. pi. 4. figs. 21, 22). 
New species : — 
DilopJms hreviceps, Loew, Berl. ent. Zeitsch. xiii. p. 162, New Hampshire; 
D. obesulus, Loew, ibid., Columbia District; D. tibialis, Loew, ibid., Sitka. 
Dilophus dimidiatus, Loew, 1. c. p. 4, New York. 
DilopJms lingens, Loew, Beschr. eur. Dipt. i. p. 20, Rhodes. 
Scatopse platyscelis, Loew, 1. c. p. 21, England. 
Bibio consanguineusj Loew, 1. c. p. 21, Russia, Siberia ; B. a77glicus, Loew, 
/. e. p. 22, England. 
Bibio anglicus, Verrall, Ent. M. Mag. v. p. 268, near London. 
Bibio smilis, Van der Wulp, Tijdschr. voor Ent. 2<^e ser. iv. p. 81, Wis- 
consin. 
ChIRONOMIDvE. 
Ceratopogon dufouri. Laboulbene (Ann. Soc. Ent. Fr. 4* s4r. ix. pp. 157- 
166) describes the metamorphosis of this species, and figures with details the 
larva (pi. 7. figs. 1-6), the pupa (pi. 7. figs. 7, 8), and the imago (pi. 7. 
figs. 9-17). 
New species : — 
ChironoTTtus polaris, Boheman, (Efvers. Kongl. Vet.-Akad. Forh. xxii. p.574, 
C. arcticus, Boh. ibid., and C. brevipe7in,is, Boh. 1. c. p. 675, Spitzbergen. 
Chironovrms oceaTticus, Packard, Proc. & Comm. Essex Inst. vi. p. 42, fig. 
p. 46 (larv^a and pupa figured p. 43). Larva on ZoMera marina in Salem 
Harbour. 
