PS ICELE . 
of the entomological section of the Boston 
society of natural history, and which Mr. 
Kingsley called S. ryder. It seemed to be 
closely allied to, if not the same as, Packard’s 
S. americana. 
Dr. H. A. Hagen called attention to the 
similarity between the fossil, considered thy- 
sanuran by Mr. Scudder, mentioned at the 
last meeting, and the early stages of Hydrach- 
na. 
Dr. H. A. Hagen mentioned the longevity 
of the larvae of Prodoxus, he having larvae 
now which have been living since 1879. 
Voted *that when we adjourn it should be 
until the regular date of meeting in October. 
13 Oct. 1882.—86th meeting. Mr. S: H. 
Scudder called attention to the three plates of 
Buckton’s ‘‘Monograph of the British aph- 
ides” on which are figures of fossil species, 
including those from amber. 
Dr. H. A. Hagen recommended that the 
author’s attention be called to the collection 
of insects from amber, possessed by Kiinow, 
of Kénigsberg, Germany. 
Dr. H. A. Hagen called attention to the 
tracks made by the larvae of gom- . 
phidae. These tracks consist of two 
series of foot-prints due to the dif- . 
ferent distances of the feet from the 
median line. Dr. Hagenthought. .|. . 
that he had seen similar marks on rocks. 
[See Mature, 21 Dec. 1882, v. 27, p. 173; 
for further details. ] 
Mr. G: Dimmock showed eggs, cocoons 
and imagos of Eugonia alniaria, and made 
remarks on the earlier stages of this species. 
Mrs. A. K. Dimmock exhibited leaves of 
the syringa, Philadelphus coronartus, which 
had been mined by the larva of a dipteron, 
of which pupae and imagos were shown. 
The mines were characterized by a peculiar 
arrangement of the excrement of the larvae 
in little curves. and were very 
about Cambridge. 
Dr. H. A. Hagen, spoke of mines caused 
by dipterous larvae in the leaves of nastur- 
tium (Tropaeolum), and Mr. Dimmock of 
abundant 
415 
mines of dipterous larvae in leaves of dock 
(Rumex), about Cambridge. 
Mr. G: Dimmock said that the odor so no- 
ticeable when larvae of Aftacus cecropia were 
handled came from glands situated in each of 
the tubercles of the larvae. [For further de- 
tails see PSYCHE, v. 3, p. 387- | 
Mr. S: H. Scudder called attention to the 
poison of the larvae of a species of Lagoa. 
When allowed to crawl upon the arm, or 
upon any tender part of the skin, this larva 
leaves behind it a pathway which soon be- 
comes red and often quite severely painful. 
Mr. R. Hayward described some experi- 
ments which he had made to test the stinging 
power of Ayferchiria to. 
Dr. H. A. Hagen, after giving the reasons 
why a late entomological excursion by Mr. S: 
Henshaw and himself was made to Washing- 
ton Territory, remarked upon the synonymy 
of some species of Papzl7o found on the ex- 
At Yumatilla, Oreg., and across the 
river from there, in Washington Territory, a 
species of Papilio, supposed to be P. macha- 
on, was taken in company with P. zolicaon. 
Later it was found that P. zolcaon and P. 
oregonus were the same species. P. orego- 
nus is very Closely like P. alaska. All of these 
are only climatic or regional variations of P. 
machaon, which extends around the northern 
hemisphere as a series of remarkable varie- 
ties. P. rutulus and P. turnus when com- 
pared show that the former is a western and 
the latter an eastern form; the differences are 
slight and not constant in each species. P. 
rutulus has, however, no dark-colored female. 
P. rutulus is found as far east as between 
Salt Lake, Utah, and Fort Bridger, Wyom. 
P. daunus and P. rutulus ave probably also 
synonyms, altho more and better material is 
needed to decide this point. Dr. Hagen then 
discussed larval characters in some species of 
Papilio, especially in P. machaon. 
Mr. G: Dimmock believed that larvae of 
Attacus polyphemus could pupate, if driven 
by hunger, before the last larval stage, and 
menticned that he had a number of dwarf co- 
cursion. 
