442 ENTOMOLOGICAL NEWS. [Nov., ’08 
Tropidolophus from the Great Plains and semi-arid country of 
the West, Pyrgodera from Central Asia and a new genus from 
Central Brazil. Dr Calvert exhibited paraffine sections of 
prawns which had been injured by book-lice (Atropos). He 
placed naphthaline in the box and found it was fully effective 
in killing the book-lice. Dermestids also attack these sections. 
Mr. Bradley exhibited stereoscopic pictures, photographs of 
Oryssidae and various genera and species. Some of the pic- 
tures were of anatomical details of these insects. A method of 
making stereoscopic pictures with an ordinary monocular lens 
was explained. This is done by using a diaphragm perforated 
on one side and then reversing it. He also showed moth parts 
(slides) of Siricidae. The mouth parts of Parurus and Tre- 
mex columba were described. The sub-family relations of 
Tremex, Teredon, Xerias, Sirex and Parurus were given. 
Henry SKINNER, Recorder. 
Meeting of March 26, 1908.—Philip Laurent, Director pre- 
siding. Nine persons were present. Prof. Calvert compared 
the Odonata found in the West Indies with those in Mexico 
and Central America, stating that the species common to the 
two areas include a number of weak-flying, and also strong-fly- 
ing species. Although the prevailing wind blows from the 
West Indies toward the continent, there are a number of 
strong-flying dragonflies found in the West Indies, and not in 
Mexico and Central America. » Mr. Rehn mentioned the oc- 
currence of a species of walking-stick of the West Indian genus 
Aploplus, on Swan Island which is nearer to the coast of Hon- 
duras than to any island of the West Indies. Dr. Skinner said 
that the geographical distribution of some species appeared in-. 
explicable and cited a number of interesting cases. 
Mr. Philip Laurent, referring to Circular No. 97 issued by 
the U. S. Department of Agriculture, entitled the Bag-worm, 
stated that it seemed strange that the willow, one of the com- 
monest food plants of Thyridopteryx ephemeraeformis was not 
mentioned in the list of food plants. Mr. Laurent stated that 
next to arbor-vitae, the commonest food plant of the larva of 
