THAXTER. — MONOGRAPH OF THE L\HiHI.I)l.\l\c: K, 2l 
nated from, or, on the other hand, have been modified to form o mditions such as are found, for c\ampl< 
in DimorphomyceSj and especially in I). Myrmrdonim, Mate XXVIII, fig. 14, in which tin elongate s. ond- 
ary axis, projecting as it docs laterally, and at right angl< , from the short primary recvpta* le, may rest 
against the surface of the host, although it does not become attached to it ( M forms in which both male 
and female organs occur on the same branches, Monoicomj/a v furnish* t striking example well Illustrated 
by M. St. Helena, Plate: XXXVI, fig. S, in which they are mere than usually elongated. 
In this connection attention should l>c called to certain forms in which the primary r reptaele is 
obliterated at a very early period by the growth of its fertile branch which has the appearance of bcin/ 
directly continuous with it, the two ax* a becoming coincident. This condition is found in all species of 
Rhachomyces, Plates XLIV and XLV, and accounts for the apparently simple axis in most normal indi- 
viduals of Monoicomyces Leptochiri, Plate XXXIV, fig. 39, Among other forms having two-celled r< 1 1 p- 
tacles, which seem to belong in this general category, two other genera need pedal mention, namely 
\fo9chomyces and Compsomyces, in which the secondary peritheeial axes are single appendiculate ci i ; 
continuous with and hardly distinguished from the peritheeial stalk-cells, so that the p< riihecium ap|>ear> 
to be borne on a double stalk-cell. A somewhat similar condition is seen 
b w 
7/' ' 
'Fuming now to instances in which the basal Spore-segmenI becomi divid d mo* than once to form 
the primary receptacle, a variety of conditions may be found, but the same •, nei I distinctions previ- 
ously outlined maybe recognized. Thus the primary receptacle ma be determinate Of indeterminate, and 
the procarps may arise either directly from it, or from it- more or let evident lateral branches. 
Instances of determinate receptacles of more than two cells, from whir!, the proearps arise directlj 
are rare, and may be illustrated by the genus Ceratomyt * a limited in the present p per, and by Aittori* 
comyces, Plates LXVIII-LXX. Whether the peculiar genus Teratomyc* Plate XUX I,, might not 
be included here, is uncertain; since the exact origin of its periihecia is as yet unknown, although they 
seem certainly not to arise from the third cell of the n reptacle. Whether tb ell abore this ihould also 
be regarded as a part of the primary receptacle, has not been determined, in tl alisence of a complet 
series from the germinating spore; but both the peri thecigerous and the appendiculate dls appear n. 
arise as proliferations from it. The conditions in SympUdromyo t 9 an evidently similar, and the be- 
' ginning of this condition is perhaps illustrated by Iditmyces. 
Of indeterminate receptacles from whieh proearps arise directly, one of the simplest types is seen 
in the anomalous genus Chwtomjjrcs, formerly illustrated: but a complete afes, in which the r ations 
between the ultimate products of the two spore-segmenta can be determined, has not as yet b. en examined. 
In contrast to this form in which the number of secondary divisions is small, the cell-number thus varyin 
scconc 
les 
Hydroph 
The female individuals of Dim myecs, and even tin 
males, may also be thus secondarily modified, a condition strikingly illustrated by /;. punmhss. Plat 
pound 
den 
mentioned instance, from continued division of the basal cell. 
proearps are borne on branches which arise from indeterminate primary 
