NEOTTEJE— DIURIDJE. 511 
Hab. in Australia occidentali; ad Swan River, Drummond. (hab. s.sp.) 
A tall species, of which I have not seen the leaves and lower part of 
the stem. The pedicels and ovary together are about 3 inches long, which . 
is less than the length of the internodes. Each stem bears from 4 to 8 
flowers, which seem to be dark yellow, with no spotting, but perhaps with 
some stains of purple. 
18. Divunis Drummondii. Lindl. Swan R. no. 225. 
D. foliis ensiformibus erectis scapo multifloro dupló brevioribus, floribus 
flavis secundis, sepalis petalis equalibus, petalis ovalibus acutis, labelli 
lobo medio unicarinato rhombeo lateralibus rotundatis integerrimis duplo 
longiore. 
Hab. in Australia occidentali; ad Swan River, Drummond. (hab. s. sp.) 
A fine species, with flowers as large as those of D. aurea. The stems 
are stout and 1 to 14 foot high. The leaves are as broad as those of a 
narrow-leaved leek, in some cases, but narrower in others. "The flowers 
are not spotted except at the base of the lip, which is stained purple. 
§ 2. ** Labelli lacinie subzquales. 
19. Druris corymbosa. Lindl. Swan R. n. 22S. 
D. foliis ensiformibus linearibusque erectis scapo 1-3-floro brevioribus, 
floribus purpureis subcorymbosis, sepalis lateralibus petalis subzequalibus, 
petalis obovatis emarginatis, labelli lobis rotundatis subzqualibus inter- 
medio convexo subemarginato basi ima elevato, column laciniis acutis 
crenatis. 
Hab. in Tasmannid, ad Circular head abunde Sept. Oct. Gunn 931, necnon 
in Australia occidentali; Swan River, Drummond, ad sinum R. Georgii, 
Collie. (hab. s. sp.) 
Stem from 4 inches to 1j foot high. Flowers large, purple. A very 
handsome species, of which I have given away a few specimens under the 
name of D. emarginata, which the Banksian Herbarium shews to be a dis- 
tinct species. The stems have from 1 to 2 leafy sheaths. 
20. Divris porrifolia. Lindl. Swan R. n. 229. 
D. foliis lanceolatis linearibusque acuminatis scapo 4-6-floro monophyllo 
brevioribus, pedicellis bracteis foliaceis brevioribus, floribus maculatis, 
sepalis petalorum longitudine, petalis ovalibus acutis, labelli lobis 
oblongis rotundatis intermedio minore convexo cuneato medio elevato. 
Hab. in Australia occidentali ; ad Swan River, Drummond. (hab. s. sp.) 
A span high. Flowers middle sized, racemose, purple with yellow 
mottling. 
CCXCII. ORTHOCERAS. 
Orthoceras. Brown prodr. 1.316. Endlich. gen. no. 1583. 
Perianthium galeatum, clausum. Sepala lateralia linearia, erecta, longis- 
sima. Petala nana, sub sepalo dorsali ovato galeato conniventia. La- 
bellum sessile, trifidum, ecalcaratum. Columna brevis, utrinque lobo 
