37 



edge of the lip, and directing itself inwards horizontally 

 with an uneven outline, at last touches in front of the 

 column and presents the appearance of a junction. 



19. C. TruUa (Lindl. in Bot. Reg. 1840. misc. I7G. 18M. t. 

 34.) ; sepalis petalisque patentibus ovalibus planis, labello 

 late ovato acuminate obtuso subcordato concave fimbriato 



apice Isevi, columna brevi. Tropical America. 



Flowers green, unspotted ; lip of the same colour, but 

 whitish near the base, with a deep brown spot in the 

 middle. 



20. C. callosum (Lindl. in Bot. Reg. 1840. misc. 183. 1841. 

 t. 5. f. 1,); petalis concoloribus lineari-lanceolatis sepalo 

 dorsali conformi suppositis, labello ovato-oblongo obtuso 

 basin versus saccate supra saccum callo magno (auran- 

 tiaco) instructo margine obsolete crenato, columnse 



acuminatae cirrhis vix ultra callum extensis'. La 



Guayra. Exactly like Catasetum tridentatum, var. 



floribundum in habit, but its flowers are different. The 

 sepals and petals are of a dull reddish brown, without 

 spots ; the column is of the same colour, which may 

 perhaps be best compared to that of old spoilt port wine. 

 The lip is green, flat, with a yellow tubercle near the 

 base above the hollow, and a stain of the same colour 

 near the apex. 



21. C. porifeimm (Lindl. in Bot. Reg. 1838. misc. 164.); 



labello piano cordato-ovato truncate crenato, lobe apicis 

 elevato carnoso ovato medio nectarifero, dente baseos^ 



ovato incurve, columna cirrhosa. — ■ — Demerara. 



Similar in appearance to C. deltoideum, like which its 

 flowers are richly spotted with deep purple broken fasciaj, 

 closely arranged upon a clear green ground. The lip is 

 dull green, nearly flat, deeply cordate, truncate at the 

 apex, with an obscurely crenated margin. At its base is 

 an elevated yellow-tipped broad tooth, and at its apex an 

 ovate yellow fleshy raised lobe, with a pore in the middle 

 secreting honey. 



22. C. deltoideum (Lindl. Bot. Reg. 184 . misc. 157- Myan- 



thus deltoideus Bot. Reg. t. 1896.); labello imberbi sagit- 

 tate triangulari, angulis posticis rotundatis dentatis apice 



dilatato calloso margine recurve basi tuberculato. 



Demerara. Flowers deep green, spotted with purple. 



Lip purple, flat, fleshy, with a dash of green in the 



