354 Bulletin of Zoological Nomenclature (1) use its pleuary powers to suppress for the purposes of the Law of Priority but not for those of the Law of Homouymy : — (a) the trivial name pungens Walckeuaer, 1802, Faune Parisienne, 2 : 354 (as pubhshed in the combination Pulex pungens) ; {b) the trivial name vespertilio7iis Duges, 1832, Ann. Sci. not., Paris (1) 27 : 161, 164, pi. 4 fig. 4 (as published in the combination Pulex vespertilionis) ; (2) place on the Official List of Specific Trivial Names in Zoology the trivial name eusarca Dampf, 1908, as pubhshed in the combination Nycleridapsylla eusarca (1908, Sckr. phys.-okon. Ges. Konigsberg 40 : 45, fig. 3) ; (3) place on the Official List of Rejected and Invalid Specific Trivial Names in Zoology : — (a) the trivial name pungens Walckenaer, 1802 (as pubhshed in the combination Pulex pungens) as proposed under (1) (a) above, to be suppressed under the jjlenary powers ; (6) the trivial name vespertilionis Duges, 1832 (as published in the combination Pulex vespertilionis), as proposed imder (1) {b) above, to be suppressed under plenary powers. PROPOSED DETERMINATION UNDER THE PLENARY POWERS OF THE SPECIES TO WHICH THE TRIVIAL NAME "SIMUS" LINNAEUS, 1767 (AS PUBLISHED IN THE BINOMINAL COMBINATION "COLUBER SIMUS") (CLASS REPTILIA) IS TO BE APPLIED By RICHARD A. EDGREN {Cresap Biological Laboratory, Northwestern University, Evanston, Illinois, U.S.A.) (Enclosure to letter dated 3rd March 1952) (Commission's reference Z.N.(S.)662) In the course of a systematic study of the genus Helerodon Latreille, 1801 {Hist, nat., Rept. 4:32), it has become apparent that the trivial name {platyrhinos, Latreille, loc. cit.) of the most common and most widely distributed member of the genus is antedated by the trivial name simtis Linnaeus, 1767 {Systema Naturae (ed. 12) 1 : 375) which has been misapplied. Linnaeus BuU. zool. Nomencl., Vol. 6 (August 1952)
Proposed determination under the plenary powers of the species to which the trivial name simus Linnaeus, 1767 (As published in the binominal combination Coluber simus) (Class Reptilia) is to be applied
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