3 N 



The basis of the systematic arrangement is the genus. In no 

 case must matter relating to two genera be placed on the same 

 sHp. 



When groups of wider comprehension tlian the genus have 

 to be dealt with on the systematic-slips, the number of the Branch 

 and Subject will, of course, be followed by the name of the 

 group instead of that of the genus as above directed. 



Every new genus must have a separate slip ; the name of the 

 new genus must be followed by the indication " n.gen.," a brief 

 statement as to what it is allied to and some indication of the 

 species it includes, followed hy author's name and reference. 



Xew sub-genera are to be treated in a similar manner to 

 genera, except that " n.subgen." will be used, and the name of 

 the genus of which it is a division will follow. 



Slips relating to fossil forms are to be marked f, and slips 

 relating to fossil and recent forms f* (the latter condition 

 occurs only rarely in this division). 



The mode in which the s}stematic-slips are to be framed will 

 be seen by reference to the systematic pages of the " Zoological 

 Record," or of the " Berichte," published in Wiegmann's Archiv 

 fllr Naturgeschichte. 



The Editor's work in this Section \v\\\ be one of much difficulty, 

 but it will be greatly facilitated by the slip-maker placing at the 

 end of each of these systematic-slips the name of the group of 

 animals the slip refers to. The slip-w^riter can frequently do 

 this with ease because it is indicated in the w^ork before him. 

 AVhen the work gives no indication of the gi'oup (i.e., Family, 

 Sub-family or Tribe), and the slip-Avriter cannot from his own 

 knowledge supply the deficiency, the slip-writer may point this 

 out by waiting at the end of the slip "position not mdicated," 

 or the sign ?, which the Editor will take to mean the above. 

 The names of many of the groups that it is desirable to indicate 

 ar(^ given in this Schedule, but it will be a great assistance to 

 the Editor if more detailed information than this is given as to 

 the systematic position. 



The Editorial work will be greatly'- facilitated by ruling a red 

 line neai- the left hand edge of the Title-slips, a green line near 

 the left hand edge of the Subject-slips, and no line at all on the 

 Taxonomy and Systematic-slips. Or the slips may be printed on 

 thin card of three colours, viz., red for the Title-slips, green for 

 the Subject-slips, and white for the Taxonomy and Systematic- 

 slips. The size of the slips must be IG cm. by 8 cm. 



(N--8469) B 2 



