On the larvae and pupae of <I>Aphorista vittata</I> and <I>Epipocus punctatus</I>

OF WASHINGTON. 37

liarfeature of the

Rhynchophorous

^faunaof

North America. He

also stated that, in hisexperience, our _{species of}

Platypus

^never attack the tops of^trees, butare always found ^{in the} lower _{part of} the trunk,beingusually inquilinous ⁱⁿ the_galleriesof other

wood-

boring ^beetles.

Dr. Riley^exhibited drawings ^oflarvae and pupae ^of

Aphorista

vittata

and Epipocus punctatus and

explained^thedifferencesbe-

tween

^the corresponding stages of the

two

_species.

The

larva of

Epipocus

^is

^more

^ovoid

^and

smoother than thatofExorista, theantennasrelatively shorter,thelateral

appendages

dorsal,

much

less spinous,

and

_{5 in}

number

ⁱⁿ

_Epipocus,

whereas, ⁱⁿ

Exorista

they are ventral

and

₇ in

number. The

_pupaa ofboth species are provided with ^lateral spines, thus

showing

great resemblance to those ofCassida.

FEBRUARY

12, 1886.

Eleven

_{personspresent.} President

Howard

in the chair.

Mr. Howard

read a note

from

_{Dr. Riley}ⁱⁿrelation tothefood- habits of the larva of

Feniseca

tarquinius, ⁱⁿ

which

he stated that he

had

for

some

time

had

in hisnotes records of observations

by Mr. Pergande who had

found the larva actually feeding

on

the followingspecies of

Aphididce

^:

Pemphigus

fraxinifolii, Schi-

zoneura

tessellata,

and Pemphigus

imbricator.

The

last

named

species ^is the

Beech Aphis

^{referred to}

by Mr. Johnson and Mr.

Lugger.

Mr. Howard

read a paper

on

the Chalcid genus,

Podagrion, which

is peculiar ^for thereasonthat it unites the characters of severalsubfamilies,

and

thatthe species of thegenus

seem

^to be exclusivelyparasitic on Mantis _eggs.

He

related his experience inbreeding ^theseparasites,

and

referred

more

particularly ^to the

mode

of ovipositionthrough ^the hard covering ^{of the}egg-masses of Mantis.

Mr. Howard

mentioned that Dr. Schafhirt, of ^this city, had given

him

a specimen ^of

Lasioderma

serricorne foundalive in

Pyrethrum powder, which was

said

by

Dr. Schafhirt tobe still

strong

enough

^{to kill} cockroaches.

Mr. Lugger

exhibited a

new

_pattern ^{of an}

aquarium which

^is very convenient ^forrearing

and

_observing ^all sortsof aquatic ^ani-