112 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



the settling of the point, he had thought best to use the Ser- 

 villean genus with both Liosilpha and Blattella cited in synon- 

 ymy. The other writer not accepting the change, Mr. Shelford, 

 of the Oxford Museum, who is a specialist on the Blattidae, 

 writes as follows : "I note that you use Blattella for Phyllo- 

 dromia Auct. What is wrong with Liosilpha Stal ? Personally 

 I stick to Phyllodromia and will do so until dipterists make use 

 of it, which they don't do at present." Recently* Mr. Shelford 

 examined pumicata, the type of Liosilpha, and found it not to 

 be congeneric with germanica, the type of Phyllodromia. He 

 thus proves Liosilpha unavailable for use in the place of 

 Phyllodromia, but he still uses Serville's name, ignoring Blat- 



o o 



tella. This stand, which is in accordance with the nomen- 

 clatorial views expressed in the above extract, seems indefen- 

 sible, and it is to be deplored that so able an entomologist 

 should so arbitrarily set aside priority, the cornerstone of sys- 

 tematic science. Phyllodromia Zetterstedt, the dipterous genus 

 of 1837, preoccupies Phyllodromia Serville, the orthopterous 

 genus of 1839, no matter if the earlier name is in present use 

 or not. Therefore, the replacing genus Blattella should be used 

 in conformity with the laws of nomenclature. 



Ceratinoptera castanca Shelford (Sjostedt's Exp. Kil. Meru, 

 etc., 17, Orth., 2 Blatt.. 22, 23, 1907), is preoccupied by 

 Ceratinoptera castanea Brunner (Syst. Blatt., p. 77, 1865). 

 In view of Mr. Shelford's knowledge of the Blattidse it seems 

 inconceivable that this preoccupation is unknown to him. It is 

 probably intentional on his part and in full accord with his 

 avowed disregard of the law of priority. Deeming a new name 

 for the preoccupied Ceratinoptera castanea Shelford a sys- 

 tematic necessity, I propose the name shelf ordi for it. 



Nauphceta basalis Kirby has been referred to the genus 

 Paranauphceta and is preoccupied in that genus by P. basalis 

 Serville. Kirby's species will require a new name if it is con- 

 generic with Serville's species. 



The new generic name Polychitonacris was proposed by Mr. 

 Rehnf to replace the preoccupied genus Polysarcus of Saussure. 

 Pycnosarcus was proposed for the same purpose three years 

 earlier by Bolivar. Thus Polychitonacris Rehn falls as a syn- 

 onym of Pycnosarcus Bolivar. 



Hadrotetti.v uiundus Scudder is a Trimerotropis, as deter- 

 mined by an examination of the types, and belongs in the 



* Deutsche Ent. Zeitschr., p. 120 (1908V 



fProc. U. S. Nat. Mus., vol. xxxvi, p. 162 (1909). 



