1899.] NATURAL SCIENCES OF PHILADELPHIA. 213 



The recognized forms are as follows: 



Ixos flava la ( Hodgson ) . 

 Ixos hildebrandi (Hume). 

 Ixos davisoni (Hume). 

 Ixos castanonotus (Swinhoe). 

 Ixos connectens (Sliarpe). 

 Ixos einereus (Blyth). 

 Ixos malaccemis (Blyth). 

 Ixos virescens (Temminck). 

 Ixos canipennis (Seebohm). 

 Ixos swnatranus (Salvador!). 



CASSINIA Harllaub. 



Cassinia Hartlaub^ is preoccupied iu Mollusca by Ca^sinia 

 Rafinesque," and as no other name is available, may be called 

 Stizorhina, from (xrj'^w, distinguo, and /n?, nasus, the type being 

 Muscicapa fraseri Strickland. 



The species are 



Stizorhina fraseri (Strickland). 



Stizorhina jinschi (Sharpe). 



Stizorhina semipartita (Riippell). 



Stizorhina zenkeri (Reicheuow). 



PHILENTOMA Eyton. 



The generic name Philentoma Eytou^ is not the earliest one for 

 the group to which it is applied, as Drymophila Temminck^ is dis- 

 tinctly stated to have for its type Drymophila velata Temminck 

 (I. c. ), which is now a Philentoma. At first sight Drymophila 

 Temminck appears to be preoccupied by Drymophila Swainson, 

 1824,** but the latter is a nomen nudum, no species being mentioned; 

 and it was not properly characterized until the next year," later by 

 a few months than Drymophila Temminck, which thus becomes 

 available for Philentoma. 



^Bev. et Mag. de Zool, 1860, p. 82. 



^Anal. Nat., 1815. p. 145. 



^Ann. and Mag. Nat. Hist., xvi, 1845, p. 229 



*FZ. Col., livr. 56, March, 1825, pi. 334. 



^Zool. Journ., i. Oct., 1824, p. 302. 



^Zool. Journ., ii, July, 1825, p. 149. 



