484 ME. H. N. RIDLEY ON THE 



and bilobed at the apex, with rather long, transversely wrinkled 

 sheaths. The flower is open, the dorsal sepal erect, the laterals 

 spreading, elliptical, lanceolate, and curved. The lip is ^ an inch 

 long hy 3. The spur is very slender and straight; the ovary 

 1 inch long ; the pedicel very slender, with a short ovate bract. 



AngRjECitm teeetifolifm, n. sp. ; caule erecto flexuoso 

 gracili rigido; foliis teretibus, demum recurvis, rigidis acutis 

 dissitis ; pedunculo gracili tereti erecto unifloro ; bractea ovata ; 

 floribus mediocribus expansis ; sepalis anguste linearibus acumi- 

 natis semiuncialibus ; petalis angustissimis linearibus acuminatis 

 subaequalibus ; labello lanceolato triangulari acuminato acuto ; 

 calcare longissimo filiformi ; capsula oblonga semiunciali costis 

 prominulis. 



Ankafana, Deans Cowan ! in Herb. Brit. Mm. 



This plant has erect flexuous stems from 6 to 14 inches in 

 height, with internodes | an inch in length. The leaves are 

 terete, pungent, at first erect, afterwards recurved, 2£ inches 

 in length, subdistichous, with rugose sheaths. The flower of 

 moderate size, with very narrow petals and sepals, \ an inch in 

 length by 1 line in the broadest part. The lip is nearly an inch 

 long, I across in the broadest part, ovate, lanceolate, triangular, 

 acute. The spur is very long and slender ; the only one I have 

 seen was 4 inches long and imperfect. The affinity is with A. 

 filicornu, Thouars. 



A. impltcatum, Thouars, Orel. BesAfr. t. 58; Lindley, Gen. 

 Sf Sp. Orch. PI. p. 24(J; Aerobion implicatum, Sprengel; — and 

 A. Eutenbebgianum, Kranzlin, Verh. Bremen, vii. p. 257, are 

 species not known to me. The latter was collected by Eutenberg 

 in the Ankaratra Mountains. It is stated to resemble A. cucul- 

 latum, Thouars, except in the lip, which is described as "rhom- 

 beum." 



A. Cowanii, n. sp. ; caule semipedali curvo crassiusculo; 

 foliis paucis dissitis linearibus obtusis oblique bilobis, striatis 

 patulis ; pedunculo gracili H-uneiali erecto, ex axilla folii 

 mferions, unifloro; florc mediocri inexpanso tenui; bractea ob- 

 tusa ; sepalis petalisque subsimilibus ovatis lanceolatis obtusis ; 

 labello ovato obtuso, sepalis subacquali ; calcare filiformi obtuso 

 pendulo semiunciali ; lobis rostelli foliaceis vertical ibus ; anthera 

 brevissime apiculata ; polliniis sulcatis ; caudicula brevissima, 

 glandula singula; ovario parum curvo. 



