Diptera

76 ENTOMOLOGICAL

SOCIETY

All the larger orders are represented, theHemiptera leadingⁱⁿ point ofnumbers with _{23 species.}

DlPTERA.

Of

theDiptera ^{there are fifteen} species, the family Syrphidse beingthe best represented, there being^fourspecies.

None

of the Diptera^are alpine.

They

^{areas follows:}

Gnophomyia

tristissima Osten-Sacken.

One

_{specimen. Ranges}from

New York

toGeorgia and west wardlo Colorado.

Anthrax

catulinaCoquillett.

Four _specimens. Occurs in Washington ^{and northern Cali}

fornia.

Erax

_jubatus ^Williston.

A

_{single specimen.} ^This _species was described from

New

Mexico.

Microdon xanthopilus Townsend.

One

_specimen. Described from California.

Syrphus

^{arcuatusFallen.}

One

_specimen. Occurs from

Nova

Scotia to

New

_England,

westwardto Alaska and California; also in Europe.

Sphcerophoria sulphnripes

Thomson.

One

_specimen. Described from California.

Chrysochlamys^croesus Osten-Sacken.

A

_{single specimen. Reported} ^from Utah and

New

_Mexico,

westward to Washington ^and California.

Exorista vulgar^{is Fallen.}

One

_specimen. Occursin

New

_{Hampshire,Idaho,}and

Wash

ington^{; also in} Europe.

Calliphora erythrocephala Meigen.

"

viridescens Desvoidy.

One

_example of each. Both _species occur over _{nearly the} whole of the United _States, and the first also occurs in Europe.

Therealso occurred on the

snow

the following Diptera, ^{all in} too poor^conditiontoadmitofmorethanageneric determination.

Tabanus

_sp. Phaonia _sp.

Limnophora

sp.

SarcopJiagasp.

Anthomyia

sp.

All these species were represented by single specimens except thelast, ofwhich thereoccurred _eight examples.