scure, and it is probable that the lip is attached to the 
very short broad column as in other species of Chito- 
nanthera. 
Chitonanthera Lorentzii J.J. Smith in Nova Gui- 
nea 14, pt. 8 (1929) 483. 
I have determined Brass 9040 and Brass & Myer- 
Drees 9669 as this species. The stems are long, and con- 
sequently the plants appear tall. One of these specimens 
has the rachis broadly winged while in the other the 
wing is less prominent. 
Chitonanthera suborbicularis J. J. Smith in 
Nova Guinea 14, pt. 8 (1929) 485, t. 80. 
I have determined three specimens, Brass & Myer- 
Drees 9670, 9924 and 10384, as this species. These spec- 
imens seem to differ from those mentioned under the 
foregoing species mainly in having shorter stems. The 
flowers in C. Lorentzi and C. suborbicularis seem to be 
identical or practically so, and it is probable that the 
two species will prove to be the same. 
Phreatia phreatioides (J. J. Sm.) L. O. Williams 
comb. nov. 
Thelasis phreatioides J. J. Smith in Bull. Dép. Agric. 
Ind. néerl. 45 (1911) 11; in Nova Guinea 8, pt. 8 (1912) 
602, t. 110 B. 
Phreatia digulana Schlechter in Fedde Repert. Bei- 
hefte 1 (1918) 911; in Fedde Repert. Beihefte 21 
(1928) t. 308, fig. 1222. 
The combination Phreatia phreatioides must be used. 
It is not a tautonym as treated by Schlechter. 
Arachnis Muelleri (Avriénzl.) J. J. Smith in Bull. 
Jard. Bot. Buit. ser. 8, 18 (1914) 47. 
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