MB. G. BENTHAM OS OBOHIDE^. 321 



species, exceptional in the subtribe in the base of the column not 

 being produced. But the habit and other characters indicate a 

 much closer affinity to Zygopetalum than to any one of the 

 Cymbidieae, and it is still further removed from the Oncidiete. 

 Besides Lindley's typical species and Beichenbach's A. lepida, we 

 would include inAganisia the Warrea cinerea, Lindl. (Zygopetalum 

 tricolor, Lindl.), and Promencea graminea, Lindl. Acacallis, 

 Lindl., a single North-Brazilian species, is referred by Beichen- 

 bach to Aganisia, but it appears to me to be much nearer to Zygo- 

 petalum; and the curious appendage to the labellum and large 

 auricles to the column may warrant the retaining it as a distinct 

 genus. Eriopsis, Lindl., should probably include Pseuderiopsis, 

 Beichb. f. Warrea, Lindl., becomes reduced to two Peruvian or 

 Columbian species, the original station given as Brazil having been 

 probably a horticultural mistake. Lycomormium, Beichb. f., besides 

 the typical species, should include Peristeria cerina, Lindl., and 

 perhaps also P. guttata, Knowles & Westc, judging rather from 

 the description than from the analysis in the plate. Batemannia, 

 Lindl., reduced to the original Gruiana species, appears to be very 

 different both in habit and character from Huntley a Meleagris, 

 Lindl., and the allied species referred by Beichenbach to Bate- 

 mannia, but which we would include in Zygopetalum. Bifrenaria, 

 Lindl., about ten species, remarkable for the very prominent, 

 often spur-like, mentum and the double (short or long) stipes of 

 the pollinarium, should include Stenocoryne, Lindl. This species, 

 in which the spur-like mentum is very long and slender, was 

 generically distinguished by Lindley on the supposition that the 

 gland or scale of the pollinarium was double, each one produced 

 into a distinct stipes, and so it is drawn in the sketch in Lindley's 

 herbarium ; but in Spruce's specimens, u. 2935, identified by 

 Lindley as the true Stenocoryne, I find the two stipites connected 

 at the base into a single glandular scale. Xylobium, Lindl., about 

 sixteen species, is usually regarded as a section of Maxillaria • 

 but the foliage and inflorescence, together with the lengthened 

 stipes of the pollinarium, appear to be sufficient to maintain it as 

 a distinct genus, more closely allied to Bifrenaria. Laccena 

 Lindl. {Navenia, Klotzsch), has two Central-American species 

 nearly allied to Bifrenaria and Xylobium. 



Lycaste, Lindl., about twenty-five species, should, I think in- 

 clude Paphinia, Lindl., and Colaa; Lindl., and is closelv allied to 

 the typical Anguloa, Buiz and Paw, of which there are three 



