THAXTER. — MONOGRAPH OF THE LABOULBEMAi I 1.. 1 
row. 
*yp 
i 
especi 
. 
and female individuals. Asci apparently eight-spored ? 
The discovery of this remarkable genus is due to Mr. Charles Bullard. who first observ« .1 il on / to- 
bia. It is unlike all others thus far described from the fact that, in all the species, one or both of the 
sexes produce secondary receptacles, corresponding to the fertile branches of other genera, which, in ;« id 
of growing free and depending on the primary foot for their nutrition, attach them* I t<» the host and 
become quite independent as far as their food-supply is concerned. Both the primary foot, and the eel! 
of the secondary receptacle, which arc in contact with the host, penetrate the latter by n sins of a simple 
their growth, as is 
more often the case, on the usually transparent spines or bristles projecting fi :n the integument of tl 
insect (Plate XXXIX, figs. 3-4, and XLI, fig. 8). 
In nearly all cases the original infection appears to take place on one of these bri ami here, as 
in other dioecious species, the spores are normally discharged in pairs, the members of which develop side 
by side (Plate XLI, fig. 17), and grow into male and female individuals respectively dig. 14 In some 
species both individuals complete their development on one of these bristle- as in //. chatophilas, I I I 
but, in a majority of cases, a fertile branch from the subbasal cell of the primary receptacle of the fetnal 
grows downward till it reaches the host's integument, before any production of perithecia begins. More 
frequently this fertile branch becomes furcate as soon as it leaves die bristle, the two secondary blanches 
being transformed into secondary perithecigerous receptacles, and in several Sp cies two paired peritbecil 
are thus produced, one from each of the secondary receptacles, symmetrically placed at the bi <>f tfo 
spine (Plate XXXIX, fig. 9, and Plate XLI, fig. 2). In other cases the secondary receptacles are 
more highly developed, creeping rather extensively, but never brandling, and always growing through 
the activity of a single terminal cell. Such multicellular secondary receptacles may give rise to numerous 
perithecia, and this type arrives at its highest development in forms like II. Eefoft (Plato XXXIX, % 
11-12) and in //. tricuspid at us (Plate XL, fig. 13). In some forms, also, the si oodary receptacles may 
be more than two, and appear to arise not as branches from the primary fertile branch, but mdependently. 
In such cases the subbasal cell of the primary receptacle evidently undergoes secondary divisions, ami h 
.fii o „x _ ii i_ j u„.r_*:i~ u__l.^l^~™ n ^rr^ci^ndinrr number of secondary lvcrpt a cl< -s. 
i 
determine 
ppcaran 
tacles such as are represented in fig. 10, Plate XL, or fig. 12, Plate XLI. ^ 
That still another tvpe exists is indicated by the conditions seen in //. PflW WW and //. Nycto- 
bora. Although both these species are closely allied to II. tmusfnda**, their oodary receptacles are 
not continuous cell-series, as in this species (Plate XL, fig. 11), but each perithecium * a* -' -^ 
ty|>e 
a shield-like receptacle (Plate XXXIX, fig. 5 and Plate XL, fig. 3). 
to be quite independent of one another, I 
distinct brandies representing outgrowths 
the subbasal cell of the primary receptacle, p 
tacles (Plate XL, fig. 5) from which but a single branch has been J^**^^ 
these shield-like structures arise as branchlets from the priinan 
ociated with 
p|M k ar 
s« n 
Whether 
be 
ormer 
ered intercalary modifications of it, I have as yet been unable to determine. 
however, appears to be the more probable. _ . , , 
A , urions condition is also UlLmtcd by II. Peri,,!,,,,,,*, which b fte mast ,,- , »l- ; ' 
monest member of the genus. In the typical form of this sped, , . ■vmarkable s toeU- «rd b- hto* 
ture is developed, that "completely covers the .ccomlarv l«ept«W ^"'^"^t^ - 
se„,.„l „n „„.„, ' mi „f ft. I,',,,, , Plate XI.I. fte. 6-7). This slncld-hk. ■■an.Om- »«ldi ,„!> an „| 
growth from one of the secon 
pe ( * i al 
t the nost 'i-uue AUi, "g*. ^ ■/• . , u. r \*t\n iml 
..mlary «cep*de. .hut compos fte ,n„,p and . . v, ,v ,1 . ■ «K an, I 
When, ho'vever, this speck* develops vcbollv m fte bMlle, and * I'mnar 
