\V. DIETZ 
233 
A LIST OF THE CRANE-FLIES TAKEN IN THE VICINITY 
OF HAZLETON, PENNSYLVANIA 
(DIPTERA) 
BY W. DIETZ, M. D. 
Ihizhion, Pa. 
'riu' material f()nDiiij>; the basis of tliis papi-r was collected by 
the writer duriiiji; the jiast twelve years and is eoiitained in tin' 
latter’s collect ions. Hazleton, Lnzeriu' (’oiint}'^, rennsylvania, 
is located on one of the highest plateaus in the State. Tlu' higlu'st 
])oints within its limits are about eighteen hundri'd feet aliovi* 
sea-level. It is situated in tlu' middle anthracite coal fii'ld and 
immediately over the Hazleton coal basin, and extemds beyond 
the North outcroi). Underlying the coal measures ari' strata 
of ‘H^ottsville C’onglomerate” and “ Mauch-Chunk Ited Shale.” 
Overlying them, are beds of slate and sandstone. 
The general toiiography of the region is hilly or mountainons, 
traversed by creeks, brooks and rills. The vegetation, la-st while, 
consisted essentially of hard-woods, with a lesser percentagi* of 
soft-woods and conifers. Practically all the large trix'S have 
been cut down for use in the coal industry, and, to-day, scrub oak 
furnishes the prineijial growths of our hills. 
As to t he climatic conditions, it may b(' stated, that tlu'winti'rs 
are rat her severe, with considi'rable snowdall; the sumnu'rs ari' 
rarely ojipressively hot, though lu're, as (dsewheri', seasons vary" 
As to the lih' zones, the fauna, belongs to the (’anadian and 
Transition Zones, with a predominance of northern forms. 
Probalily ninety peiaamt of the material heri' used has been 
collected in the north -western quadrant of the region and with- 
in one mile and a half from the city limits. 
The principal collecting places examined are: 
1. A swampy part of what is known as Hazh' Park, north- 
west of and adjacent to the Irorough of West Hazhdon, tlu' latti'r 
adjoining Hazleton proper. This is open, swampy ground, con- 
sisting chiefly of decayed vegetable matter. lU're the vegetation 
TUANS. AM. ENT. SOC., .XLVII. 
