36 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



cited in its synonymy. Anaphothrips is thus restored in the sense 

 of Eulhrips, Karny (nee Targioni-Tozzetti), and its type hereby 

 designated as Thrips obscura Miiller ( = Thripx xtriata Osborn = 

 Anaphothrips virgo Uzel). 



In the place of Euthrips the European workers for many years 

 used the name Physapus De Geer (or Physopus, as emended by 

 Uzel). This name was first used by De Geer in 1744, before the 

 appearance of Linne's Systema Natune, and is thus without stand- 

 ing in zoological nomenclature. In 1773 De Geer cited his earlier 

 paper, but accepted Linne's name Thrips (1758). Hence the name 

 Physopus can not date from this use by De Geer in 1773. Opin- 

 ion 5, rendered by the International Commission on Zoological 

 Nomenclature, covers this point in the following words: "A pre- 

 Linnaean name, ineligible because of its publication prior to 1758, 

 does not become eligible simply by being cited or reprinted with 

 its original diagnosis after 1757. To become eligible under the 

 Code, such names must be reinforced by adoption or acceptance 

 by the author publishing the reprint." A ruling to this effect i> 

 also incorporated in the Entomological Code. Physapus, then, 

 must date from its definition by Amyot and Serville in 1843, this 

 being its first adoption in literature subsequent to 1758. The 

 name is preempted, however, by Physapus Leach (1830 ? ,see Bibli- 

 ography), a genus of Ephemerida. Physopus, Uzel (1895), is 

 also unavailable, being simply an emended spelling of the older 

 name. Physapus, therefore, can <>l i>r uwd as a generic name in 

 Thysanoptera. 



The literature previous to 1907 furnishes only two names that 

 may be used for the mutually homogeneous segregates of this old 

 genus Phi/x<i/)iiK ( = Euthrips, auctores, nee Targioni-Tozzetti). 

 These are Tceniothrips Amyot et Serville (type, Thrips primula 

 Haliday) and Odoniothrips Amyot et Serville (type, Thr-ipx phal- 

 erata Haliday), both erected in 1843 



To the former of these belongs Euthrips pi/ri Daniel, the pear thrips. 

 It is positively congeneric with T. priniithe (Haliday), and even 

 under the microscope might easily be mistaken for that species. 

 Primula' differs from pyri principally in that the apical antennal 

 segments are much more slender and the anterior vein of the fore 

 wings is set with three spines, instead of five, in its apical half. 



To Odontothrips must be assigned two North American specif < 

 commonly listed in Euthrips. These are Euthripx itiicix calif or- 

 nicus Moulton, described as a variety of Haliday 's Thripx ulici*; 

 and Thrips phalerala Haliday, recently recorded by Morgan (1913) 

 from Florida under the name Euthripx phalerala. 



This disposes of three of the twenty-two species of "Eulhrip*" 

 recorded from North America. Of the remainder, one, ttnthrips 



