i 
APOSTASIACEZ OF THE MALAY PENINSULA. 309 
some raised nerves in the concave part of the lip, but they are 
very obscure during life. The column arms are broad, long, 
and hooded; and the rostellum, a thin retuse membrane, is 
joined to them, being adnate to their interior faces. From the 
position of the floor of the clinandrium (i.e., the rostellum) 
I believe that these column arms consist of the stelidia (i.e., 
filaments of the aborted stamens) combined with a portion of 
the hinder margin of the clinandrium. The thin, flat anther 
cap is divided into eight compartments. The pollinia are eight, 
equal and pyriform in shape. They are joined together by a 
short but distinct translucent peduncle which bears at its 
other end an oval honey-yellow disc. This is figured also by 
Griffith in the ‘Ic. Pl. As.,’ and the presence of this was 
probably the reason why he referred the plant to Appendicula. 
Till I have had opportunities of examining a good series of the 
allied species in a living state I am unwilling to remove this 
plant from the neighbourhood of Eria, although the pollen is 
much more like that of a Vandea than that of an Ppidendrea. 
CERATOSTYLIS CLATHRATA, Hook. f., Fl. Brit. Ind., v. p. 825, 
et Ic. Pl., t. 2092. 
Hab. Perak: Batang Padang, 4,900 feet alt., Wray. 
C. uancirouia, Hook. f., Fl. Brit. Ind., v. p. 826, e¢ Ic. Pl., 
t. 2102. 
Hab. Perak: Scortechint. 
C. ropusta, Hook f., Fl. Brit. Ind., v. p. 827, et Ic. PI., 
t. 21038. 
Hab. Perak: Wray. 
C. crypranrHa, Ridl., sp. nova. Caules 3 poll. longi, 
ceespitosi, a vaginis siccis striatis tecti; radices copiose, tenues. 
Folia bina, 5 poll. longa, } poll. lata, subacuta, apice inequaliter 
biloba. Scapi % poll. longi, filiformes, tomentosi, ex axillis 
vaginarum singuli, l-flori. Bractea minuta, ovata; pedicellus 
brevis, lanuginosus. Flos } poll. longus. Sepala ovata, acuta, 
cucullata, mucronulata, parce pubescentia; mentum longius, 
pendulum, clavatum. Petala anguste linearia. Labellum 
longum, tenue, basi lineare, apice dilatatum a callo carnoso 
ovato auctum. Columna brevis, crassa; clinandrium pro- 
fundum ; stelidia carnosa, antheram non superantia. <Anthera 
