acutissimis, labelli lobis lateralibus ovatis angustis acutis intermedlo oblongo 

 membranaceo apiculato inargine deflexo : callo disci elevato carnoso antic^ 

 transverse lobos laterales labelli conjungente medio producto truncalo tri- 



dentato et denticulis utriiique reflexis postice fornicato truncato bilobo. 



Brazil; in Messrs. Rollisson's collection. Flowers pale lemon colour; 

 labellum dotted with purple in the middle. Next M. slapelioides. 



M. acicularis ; (Herbert mss.) subcaulescens, pseudobulbis subfusiforraibus 

 sulcatis diphyllis basi squamosis, foliis linearibus acuminatis canaliculatis 

 dorso convexis, pedunculis arctissim^ squamosis axillaribus unifloris, peri- 

 anthio conniventc, sepalis petalisque ovatis acutis, petalis obtusioribus, 

 labello indiviso oblongo obtuse disco illinito : callo lineari apice rotundato 



integro. Brazil ; in the collection of the Hon. and Rev. W. Herbert. 



Flowers purplish chocolate. I only know this from a drawing by Mr. 



Herbert. The structure of the flower requires to be re-examined. The 

 pollen I have not seen at all. Affinity uncertain, except with M. 

 uyicata. 



M. uncata ; caulescens, pseudobulbis in axillis squamarum meinbranacearum 

 iisque brevioribus teretibus sulcatis monophyllis, foliis linearibus canaliculatis 

 obtusis, lateralibus basi maxira^ productis petalis sepaloque supremo qua- 

 druplo majoribus, labello oblongo obtuso carnoso margine crispo membra- 

 naceo basi angustato disco unicalloso, columna apice utrinque uncata. 



Demerara ; m the collection of Messrs. Loddiges. 



M. chlorantha ; acaulis, pseudobulbis ovalibus compressis monophyllis, foliis 

 ligulato-oblongis obtusis lucidis basi in petiolum canaliculatum angustatis, 

 sepalis patulis suba?qualibus linearibus acutis lateralibus basi parfim 

 obliquis, petalis linearibus conniventibus, labelli trllobi oblongi lobis latera- 

 libus nanis obtusis planis intermedio producto ovato carnoso granulate 



crispo : callo solitario ovate. Demerara ; in the collection of Messrs. 



Loddiges. Flowers small, yellowish green, sweet-scented. 



^ M. variabilis ; (Bateman mss.) caulescens, pseudobulbis ovalibus compressis 

 squamis membranaceis longioribus monophyllis, foliis lineari-ligulatis ob- 

 tusis emarginatis planiusculis, floribus axillaribus solitariis, sepalis lineari- 

 oblongls acutis petalis subaequalibus lateralibus basi parilm productis, labello 

 oblongo refuse carnoso basi membranaceo veneso medio utrinque centracto, 

 callo disci parve ovate obtuse integerrimo, columna clavata, anthera pu- 



bescente, Mexico; in various collections. Flowers small, deep purple. 



Known in the gardens under the names of M.atropurpureaand M.concinna. 

 Near M. platypetala. 



y M. tenuifolia ; caulescens, pseudobulbis evato-oblongis compressis monophyllis 

 squamis longioribus, foliis lineari-lanceolatis acutis recurvis, pedunculis 

 axillaribus solitariis basi squamatis, evario denudato arcuate, floribus cernuis, 

 sepalis evato-lanceelatis inargine revolutis subaequalibus reflexis lateralibus 

 basi subsequalibus, petalis ovatis obtusis conniventibus, labello oblongo 

 indiviso apice ovato reflexe infra apicem utrinque centracto, callo disci 



oblongo integerrimo. Mexico; found near Vera Cruz by Mr. Hartweg. 



■ Flowers rich purple, spotted and broken into small yellow patches. 



Near M. platypetala. 



With regard to the limits of the genus Maxillaria, the reader will find 

 some observations at the end of folio 1901. 



