44 2 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 Paritrus and -Trc- 

 me.v columba were described. The sub-family relations of 

 Treme.v, Teredon, Xerias, Sirex and P arums 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 

 Aplophis, 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 Thyridoptery.v ephemerae for mis 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 



