THAXTER. 
.I1ENIACM. 208 
base of the anterior spiniferous eell, the upper half of which forms a free spinous proeev slightly incurved 
distally and equalled or even exceeded by the lateral spinous process: tlu free tip of the pcrillx iiim 
about twice as long relatively, slightly incurved, die creel incurved spinous pro.-i which subtends it 
externally, more than twice as long as that of 77. 3-cu.spidaiuJt and sublateral; the lip between the basi 
of this spine and the inner angle of the anterior spine relatively shorter and broader. Spores about 
15 X 1.6 ju. Perithecium: ascigerous portion 58 X 30/t; terminal portion to tip. Hi p; interior prooMt, 
free portion, 22-25 ft, whole cell, 50-54 fi; subtcrminal proc< I, free part, 17": total length, 1 includ- 
ing basal cells. Width of two outer buttresses together 85 100 tr, height of shield-like upgrowth 'M\ .">0 ; 
length from insertion to base of perithecium 00-80 ft; total length from insertion to lip of peritheeial spin.' 
180-218 p. 
On antenna of a wingless roach Blabera sp., Para, Brazil; Mm. Comp. Zool., No. i:«»2; on Wahcm 
sp., Mexico, Scudder Collection. 
As has been previously mentioned, the primary receptacle of this speck appears to g'c re. to mi 
branch only (fig. 5), and is very small and otherwise peculiar, the terminal ceD gR-atly elongated and 
tapering. The fertile branch becomes furcate at once, and the groups of buttres d perithelia seem to 
result from continued secondary branching; the first pair of secondary receptacles that is produced being 
anterior and more highly developed, shielding the later ones which arise behind them. The development 
of the peritheeia in these secondary receptacles docs not appear to l>e so simultaneous as it is in other 
species, H. Periplanetas for example; since very young peritheeia are often associated in the same indi- 
vidual with others that are fully matured. 
The present form is most nearly allied to H. Diplopterm which is characterised by the same mode 
of growth, but possesses very different peritheeia, and also to H. frxcmpidalm in which (he habit of growth 
is quite unlike either of these species. 
i 
AMORPHOMYCES Thaxter. 
The single described species of this genus still remains the simples, of all the type, thus far discovered 
l>e considered 
and unique in possessing spores which are continuous, 
indicative of a primitive condition or as due to a process of reduction, it is quite mponhle to M] 
TI 
ommon and h ■ > l>< < n re- 
ceived from Ohio. Certain undescribed forms are also known from South America, which adhere strntly 
typ 
DIOICOMYCES Thaxter. 
l'roc. Am. Acad. Arts and Set, Vet XX.WII. p. 33. June. 1901. 
• ft * 
bearing a subterminal discharge tube. 
super] 
pecul 
perithec 
from the sterile terminal cell by a second small cell. Perithecium free, stalked : the a*. ...c cell smglc 
the spores more or less obliquely once-septate and of two kinds J-J-^^^~- . ^ 
This 
spores 
orph 
pcrithe 
tube of the antheri- 
slerile .-ells Which terminate the re.ep.aelc The suh.erminal origin of the .!« barge ^ £* «'" " 
diu.n is a farther and apparently constant differ, nee; whBe the fMMI m the .nak . U of ■ r 
i„ plaee of three, cells. soL to separate the ta. genera a. once The ■ ,1, «.■«.,- '" -; " ™ 
and female spore, is usually very diking, Plate XLII, figs. 24 2, an,l », an. a- h . . 1. ■ ' 
genera, one almost invariably finds that the two have been d.seharg,, >^»r* ■£■£££ 
b , ■ , , • , „•,._- .■:_ .i:„.i r *™rp» bas been .opious, howev.r, and th.- .ii.lni.lu.ils arc 
