1899.] NATURAL SCIENCES OF PHILADELPHIA. 211 



from (i.fpaffzo'i, mirabilis, and unpd, caiida, the type beiug Motacilla 

 spinicauda Gmeliii. 



The species are 



Aphrastura spinicauda (Gmelin). 



Aphrastura masafuerce (Philippi and Laudbeck). 



EROESSA Hartlaub. 



Eroessa Hartlaub' is preoccupied iu Lepidoptera by Eroessa 

 Doubleday.' Another name for the group, Dauria Pollen/ is also 

 unavailable on account of Dauria Dejean, 1834, for a genus of 

 Coleoptera. Neomixis Sharpe* must therefore be employed, the 

 type being Neomixis striatigula Sharpe. 



The species will thus stand as 



Neomixis tenella (Hartlaub). 



Neomixis viridis (Sharpe). 



Neomixis striatigula Sharpe. 



ELLISIA Hartlaub. 



The genus EUisia Hartlaub^ must give way to Ellisia Forbes and 

 Goodsir,^ for a group of Polypi. As Thamnornis Milne-Edwards, 

 type chloropetoides, appears to be sufficiently distinct for generic 

 separation, a new name is necessary for the species of Ellisia 

 proper; and Nesillas, from I'^Tf^?, insula, and U/la?, turdus, is pro- 

 posed, the type being Ellisia typica Hartlaub. 



The recognized forms are 



Nesillas typica (Hartlaub). 



Nesillas typica ellisia (Schlegel). 



Nesillas typica lantzi (Grandidier). 



Nesillas typica longicaudata (Newton). 



Nesillas hrevicaudata (Milne-Edwards and Oustalet). 



PHLEXIS Hartlaub. 



The generic term Fhlexis Hartlaub' is preoccupied in Coleoptera 

 by Phlexys Erichson,* emended by Agassiz to Phlexis.^ It may be 



'P. Z. S., 1866, p. 218. 



2 Gen. Diurn. Lep., 1847, p. 56. 



^BecJi. Faune Madag., Mam. et Ois., 1868, p. 92. 



*P. Z. S., 1881, p. 195. 



^Journ.f. Orn., 1860, p. 92. 



^Rep. Brit. Ass. for 1839 (1840), p. 8L 



' Ibis, 1866, p. 139. 



®In Wagn. Eeis. Algier, 1841. 



^Nom. Zool, 1842-46, p. 124. 



