Ins . 235 
DIPTERA. 
BY 
W. F. Kirby, M.E.S., &o. 
The General Subject. 
Adolpii, E. Vorlaufige Mittheilung fiber die Flfigel der Dipteren. Zool. 
Anz. v. pp. 609 & 610. 
Calls attention to his larger work on the subject. 
ArridAlzaga, E. L. Catalogo de los Dipteros hastu ahora descritos que 
se encuentran en las Republicas del Rio de la Plata. Bol. Ac. Arg. 
iii. pp. 109-152. 
The portion of this paper in the Recorder’s hands, which is only a 
fragment, extends to Midas. No new species are described. 
Becher, E. Zur Kenntniss der Kopfbildung der Dipteren. Wien, 
ent. Z. i. pp. 49-54, figs. 
The importance in classification of the presence or absence of a frontal 
protuberance is here indicated. 
. Zur Kenntniss der Mundtheile der Dipteren. Denk. Ak. Wien, xlv. 
pp. 123-162, pis. iv. 
Includes an historical introduction and a description of the various 
parts, at first general, and then as observed in the various families of 
Diptera ; a bibliography of the subject is added. No abstract of this 
paper can here be attempted. 
Beling, — . Beitrag zur Metamorphose zweifliigeliger Insecten aus den 
Familien Tabanidce, Leptidce, Asilidce, Empidoz, Dolichopidce , und 
Syrphidce. Arch. f. Nat. xlviii. pp. 186-240. 
Relates to the following species : — Sargus cuprarius , L., Chrysomyia 
polita, L., Clirysops relictus , Meig., Chrysopila Iceta, Zett., nigrita , Fabr., 
nubecula , Fall., Symphoromyia crassicornis , Panz., Lcptogastcr cyVindricus , 
De Geer, Dioctria celandica, L.,yftmjpes,Meig., linearis , Fabr .,Laphria gilva , 
L., Asilus atricapillus , Fall., cyanurus , Loew, Empis tessellata, Fabr., ster- 
corea, L., eestiva, Loew, Microphorus pusillus, Macq., Ocydromia glabricula, 
Fall., Rhamphomyia sulcata , Fall., nitidula , Zett., dentipes , Zett., Hilara 
interstincta, Fall., pilosa, Zett., maura , Fabr. , matrona, Hal., Psilopus platy- 
