THE ORCHID REVIEW. 14! 
Myanthus form was identical with Catasetum Gnomus, but as he gave no 
description of the essential organs of the others it was impossible to guess 
what they were. Having now seen his original drawing, I can say that the 
Monachanthus is the female of the species, and the Catasetum, so-called, is 
nothing but an abnormal and imperfect condition about midway between 
the two sexes, such as I have seen in two or three other species. The 
theory about three sexes, highly improbable from the very first, may now be 
considered as finally exploded. 
In the paper before-mentioned I was able to enumerate sixteen species 
of which both sexes were known, and now six others can be added. The 
former list included C. atratum, C. barbatum, C. callosum, C. cernuum, 
C. cristatum, C. Darwinianum, C. deltoideum, C. Gnomus (C. heteranthum), 
C. macrocarpum (C. tridentatum), C. Naso, C. CErstedii, C. pileatum 
(with which Reichenbach declares C. Bungerothii to be identical, though 
the point has since been disputed), C. Regnellii, C. sanguineum, C. 
umbrosum, and C. variabile. Those which have since appeared are 
C. ciliatum, C. discolor, C. fimbriatum, C. maculatum, C. Randii, and a 
species at first thought to be C. Hookeri, whose identity is not quite certain. 
Besides these, two or three females are known which have not yet been 
identified. 
The genus contains four distinct groups or sections, which can now be 
more exactly defined that when my paper was written. 
In the section EucatasetuM the lip is uppermost and more or less 
galeate, or hood-shaped, in both sexes, and the rostellum of the male 
prolonged into a pair of antennz, which, when touched, cause the ejection of 
the pollinia. C. macrocarpum and C. Gnomus are familiar examples. In 
both of these one antenna stands forward in front of the lip, and is alone 
sensitive, the other being turned round near the base of the column, and 
functionless. C. maculatum, C. CErstedii, C. atratum, and several others 
have the same character. In a few other species the antenna are both in 
the same plane, and equally sensitive, as in C. planiceps, C. albovirens, C. 
Lemosi, C. punctatum, and some others. 
The second section is Myantuus, and differs in having the lip of the 
‘male flower underneath, and not galeate, though the female has the lip 
precisely as in Eucatasetum. A few species have the antennz in different 
planes (as in C. macrocarpum), and one only sensitive, as C. Bungerothii, 
C. Christyanum, C. laminatum, C. saccatum, and C. tabulare. The 
majority, however, have them in the same plane, and both equally sensitive. 
Familiar examples are C. barbatum and its allies, C. callosum and C. 
fimbriatum, while C. Trulla, C. trifidum, and C. luridum may also be 
mentioned. 
The third section is called Ecrrros#, and the only examples in 
cultivation that I know of are C. Russellianum, C. Warscewiczii, and 
