186 PROFESSOR LINDLEY'S CONTRIBUTIONS TO 



69. D. lanceolata ; foliis lanceolatis acuminatis eosta supra alba, scapi 

 vaginis 4 laxiusculis quarum inferior foliacea, spica et bracteis acuminatis 

 pubescentibus, floribus distantibus ovariisque glabris, sepalis petalisque sub- 

 sequalibus acutis, petalis semioblongis acutis sep. dors, agglutinatis supra 

 cohunnam cucullatis, labello longe angustato tridentato intra ventrem 

 2-lamellato callis 2 carnosis circularibus dentatis, columnee appendicibus 

 2 membranaceis liberis bilobis. 

 Khasia, near Pomrang ; one specimen only seen, J. D. H. 

 About a foot high. Stem erect with three or four dark green 

 leaves near the middle, each with a broad white band along the 

 midrib ; the petioles rose-coloured. Spike cylindrical, 2 inches 

 long, of about fourteen distant rose-coloured flowers. The dorsal 

 sepal and broad petals firmly glued to it form a wide hood com- 

 pletely overlaying the column and hypochil. 



XIX. Zetjxlne, Idndl. Gen. et Sp. Orch. p. 485. 



60. Z. sulcata, I. c. (Z. robusta, Wight, Ic. 1726. Z. brevifolia, id. Ic. 1725. 

 Z. emarginata, Lindl. I. c.) 



Peshawur, Major Vicary ; Plains of N.W. India, T. T. (352) j Pladn& of 

 Behar, J. D. H. (id.) ; Ceylon, id. ; Hong Kong, Champion j Assam, 

 Griffith ; Chittagong, J. D. H. $T.T.} Philippines, Cuming* 

 This very common plant is evidently extremely variable, and I 

 think all the names above quoted certainly belong to it ; Z. emar- 

 ginata is a very small state. Z. robusta and brevifolia I cannot 

 at all distinguish. 



61. Z. membranacea, I. c. (486). (Z. bracteata, Wight, Ic. 1724 bis.) 

 Assam, Bootan, Sunderbunds, Griffith. 



A much taller plant than the last, with long grassy leaves and 

 a membranous lip. 



62. Z. Tripleura. (Tripleura pallida, Lindl. I. c. p. 452.) 

 Hot valleys, Sikkim, J. D. H. (352). 



Very like the last, but distinguished by its lateral petals being 

 linear and spreading at right angles to the lip, which is oblong, 

 concave, and abruptly terminated in an emarginate point. The 

 proposal of the genus Tripleura was a great oversight. 



XX. Mokochilus, Wallich, in Lindl. Gen. et Sp. Orch. p. 486. 



63. M. lengilabris, Idndl. I. c. (M. affinis, R. Wight, Ic. 1728.) 

 Ceylon, Thwaites, Champion-, The Ghats, Stocks (13). 

 No doubt can exist of the above figure in Wight's Icones be- 

 longing to this, and not to M. affinis, a smaller two-flowered plant 



