26 Psyche [Februai-y 



De Geer (1773), Mymiicinarum genus, aud F. foetida Buckley 

 (1866), Forelius. 



F. incisa Schenck (1852), Lasius, and F. incisa F. Smith (1858), 

 Formica ? 



F. nana Latreille (1802), Pheidole, F. nana Jerdon (1851) = 

 Tapinoma melanoceplialuni, and F. nana F. Smith (1858), Cam- 

 ponohis. 



F. nitida Eazomnowsky (1789), genns.? and F. nitida F. Smith 

 (1858), Camponoius. 



F. vagans Olivier (1791), Eciton, and F. vagans Jerdon (1851), 

 Prenolepsiff. 



These examples will suffice, I believe, to prove the inadvisability 

 of changing the names of these ants, merely because they were 

 classed, at the time of the publication of their descriptions, in the 

 Linnean genus Formica, though at the present time relegated to 

 the most diverse genera and even to different subfamilies. 



There are also other names which are repeated twice or several 

 times by ancient authors in the genus Formica, but as they furnish 

 material for no discussion of interest, I pass over them in silence.* 



* For example: 



F. bicolor Fabricius (1793), Latreille (1798), Leach (1825), Schilling (1858). 



F, megacephala Fabricius (1793), Leach (1825), Losana (1834), etc., etc. 



