16 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.64. 



Brian first gave his new genus the name Silvestria, but this had been used 

 for a genus of myriapods in 1895. He then changed the name to Leptotrache- 

 lus, but this was more unfortunate, since it had been used twice, for a genus 

 of beetles in 1829 by Latreille and for a genus of fossil fish in 1863 by Marck. 



Genus LEUCKARTIA Glaus. New name, RUDOLFIA. 

 Leuckartia Glaus, Die frei-lebeuden Copepoden, Leipzig, 1863, p. 182. 

 Type of genus, Leuckartia flavicornis Claus, monotypic. 



Leuckartia was used by Agassiz for a genus of coeleuterates in 1S62, and 

 hence Leuckart's first name is here substituted. 



Genus MO NO PS Lubbock. New name, MONACHOPS {novaxos, single; oiZ-s, 

 eye). 



Monops Lubbock, Annals and Magazine of Natural History, ser. 2, vol. 12, 

 1853, p. 122. 



Tj^e of genus, Monops grandis Lubbock, monotypic. 



Mo^iops was used for a genus of higher Crustacea in 1820 by Billberg. 



Genus NARCODES Hesse. New name, NARCODINA. 



Narcodes Hesse, Annales des sciences naturelles, ser. 5, vol. 4, 1865, p. 236. 



Type of genus, Narcodes macrostoma Hesse, monotypic. 



Narcodes had been used by Agassiz for a fish genus in 1829 and by King for 



a genus of beetles in 1863. 



Genus PARAMEIRA Sars. New name, 8ARSAMEIRA. 



Parameira Sars, Grustacea of Norway, Copepoda Harpacticoida, vol. 5, 

 1907, p. 221. 

 Type of genus, Parameira parva Sars, first species. 

 Parameira was used by Seidlitz for a beetle genus in 1868. 



Genus P8AMATHE Philippi. 8GUTELLIDIUM Claus (1866). 



Psamathe Philippi, Wiegmann's Archiv fiir Naturgeschichte, vol. 6, 1840, 

 p. 189. 



Type of genus, Psamathe longicauda Philippi, monotj'pic. 



Psamathe was used by Rafinesque in 1814 for a genus of decapod Crustacea, 

 Psamatha was given by Schuckard to a genus of Hymenoptera in 1837, and 

 Psammathe was proposed for a genus of Vermes in 1836. Most authors are 

 agreed that Psamathe longicauda, Philippi's type species is identical with 

 Scutellidium tishoides, the type of Claus's genus. Hence Philippi's specific 

 name must be retained. 



Genus SETELLA Dana. New name, DWIGHTIA (James Dwight Dana). 

 Setella Dana, U. S. Exploring Expedition under Wilkes, Grustacea, 1852, 

 p. 1198. 

 Type of genus, Setella gracilis Dana, first species. 

 Setella was used by Schrank for a genus of Lepidoptera in 1802. 



Genus THAVMATOPSYLLUS Sars. New name THESPESIOPSYLLUS 

 {deffirbios, wonderful). 



Thaumatopsyllus Sars, Archiv for Mathematik og Naturvidenskab, vol. 33, 

 1913, p. 4. 



Type of genus, ThaumatopsylUis paradoxus Sars, monotypic. 



In 1894 T. Scott published the name Thaumatopsyllus as a " manuscript 

 synonym " of the genus Aegisthus. This publication of the name as a synonym 

 of another genus prohibits its use by Sars. 



