33 2 ENTOMOLOGICAL NEWS. [Oct., '07 



"international relations" of the L/ycaenid caterpillars should 

 be studied in order to verify beyond doubt if the friendship be- 

 tween the ants and the caterpillars is limited to certain kinds 

 only, or whether, as in the plant- and shield-lice it has a more 

 international character. So far any hint or information is want- 

 ing on the phylogeny of the myrmecophilous adaptation organs, 

 as well as an anatomical examination of these, or a chemical 

 examination of the juice which comes from them. 



The commencement of a solution to many of these enigmas 

 has been made ; unfortunately most of these studies fail for 

 want of the necessary materials. Therefore, I venture to ask 

 the kind help of all those who are able to assist me in the 

 matter. This could be given : 



1. By sending me well-determined caterpillars of L,ycae- 

 nidae (blown-out or in spirit, formol, etc.), particularly non- 

 European specimens.* 



2. By sending me ants that have been observed in company 

 with caterpillars or nymphs (chrysalids), or by informing me 

 of the well-determined names. 



3. By informing me of other personal observations which 

 have not as yet been published, and which bear upon observa- 

 tions and studies touching this subject. 



Dresden A., 16, Reissigerstr. 21 (Germany). 



DR. JAMES FLETCHER, Dr. Henry Skinner and Mr. T. N. Willing 

 conducted a series of farmers' meetings in the Province of Saskatch- 

 ewan, Canada, from July i8th to 3ist. The subjects considered were 

 noxious weeds, injurious insects, and insects in relation to the transmis- 

 sion of disease. Five hundred and fifty miles by rail and six hundred 

 miles by wagon were traversed through a most interesting country. 

 Later Drs. Fletcher and Skinner spent a few days in the Rocky Moun- 

 tains of Canada. 



NOTES ON JAMAICAN HEMIPTERA. "A Report on a Collection of 

 Hemiptera Made on the Island of Jamaica in the Spring of 1906." By 

 E. P. Van Duzee. This is a paper of seventy-nine pages and is No. 5 

 of Vol. VIII of the Bulletin of the Buffalo Society of Natural Sciences. 

 There are copious notes on the insects collected. One new genus and 

 upwards of fifty new species are described. This cannot help but be a 

 valuable contribution to the literature of the subject. 



* Kindly address large packets of caterpillars to Prof. Dr. K. Heller, Dresden A., 

 Zwinger, Royal Zoological Museum. Prof. Heller, custodian of the Museum, has most 

 kindly arranged for the special safety of the caterpillar collections, to receive the same 

 for me in the Museum and to undertake their careful return. 



