THE ENTOMOLOGICAL CODE. 3 
use for one group of insects, as Physapoda and Thysanoptera for 
thrips, or Siphonaptera and Aphaniptera for fleas, the earlier should 
be used. 
Status oF INvALID NAMEs. 
118. If an author publishes a manuscript name, or any other 
name that is invalid, such name may be adopted later by any author 
for any purpose, and it will date from the first valid usage, and be 
credited to the validating author, no matter in what sense used. 
Example—Alpha alba Smith 1834, MSS. does not preoccupy 
Alpha alba Jones 1867. Likewise the generic name Beta Smith 
1834 without included species does not preoccupy Beta Jones 1867 
validly established. 
RECOMMENDATIONS. 
119. Reprints should always bear the name and volume of the 
publication and the original pagination. 
Titles should indicate the Order or Family, preferably both, to 
which the insects discussed belong, and if the article treats of the 
fauna of one general region that fact should also appear in the title. 
Follow some plan in making descriptions, segregate the matter 
relative to one part or pertaining to the color, &. Comparative 
notes relative to an allied species in the same genus, where such 
occurs, is recommended. 
A new genus or species should be clearly indicated as such and 
should be noticeably set off in position or type, not obscurely pro- 
posed in the midst of a paragraph or other inconspicuous position. 
A description should be given separately for each new genus and 
species and their types indicated. 
When descriptions of new genera or species are given in languages 
ether than Latin, German, French or English it is well to include a 
diagnosis in Latin. 
New species should not be based on the early stages, nor on the 
work of insects. 
_ Do not make overlong descriptions nor titles. 
In describing new species a figure, especially of distinguishing 
characters, should be given. 
The Metric system of measurements should be used in all scientific 
works. 
A name should be euphonious, and of moderate length. Hybrid 
names should be avoided. 
