47 



he considered that the distribution of each family, as far as 

 concerned recent forms, would show different regions according 

 to the family. 



A. Porter was to have read a paper entitled : 



A Catalogue and Bibliography of Chilian Coccid.e, 



but being absent, \\\ Horn was called upon to give his paper 

 entitled : 



Die Fortschritte des neuen Coleopterorum Catalogus 

 von Junk-Schenkling. 



W. Horn recalled the famous Catalogus Coleopierorum of 

 Gemminger and Harold (1868-76), which comprises about 77,000 

 species, but which now long since is out of date. There was 

 great difficulty not only in finding enough specialists for working 

 up the different groups of beetles, but also in finding an editor 

 for the great new Catalogue. 



Some idea of the work involved might be obtained by the 

 number of one single family of Coleóptera, the Curculionidae, 

 75,000 species of which had already been described. Now the 

 Catalogue was going rapidly ahead ; all groups of beetles were in 

 charge of specialists ; the first part was issued in 19 10. A brief 

 comparison was given of the numbers of species of the old Gem- 

 minger and Harold's Catalogue and the new one : it proved 

 that generally the numbers had increased in the proportion of 

 1:3. Special attention was drawn to the great expense of 

 editing the work, as there was no chance at all of obtaining 

 official help : an appeal was therefore made to all entomologists, 

 and all entomological and zoological institutions, etc., to do their 

 best in the interest of the Catalogue. The entomologists of the 

 U.S.A. were especially asked for assistance, since the Catalogue 

 was very important from a practical point of view, as it included 

 the literature on economic entomology (cf. Vol. II., p. 192). 



Finally, W. Horn mentioned the LepidoptcroriDn Catalogus of 

 Junk-Wagner, which had been quite lately undertaken. The 

 difficulty was not so much in the number of the species as in the 

 want of specialists who were willing to assist. He appealed 

 to English lepidopterists for their co-operation. 



