318 THAXTER. —MONOGRAPH OF THE LABOULBENIACE^. 
cell is never appendiculate in this genus, it is normally so in Rhadihomyees. There are also certain 
difference in the antheridial branchlets which may be significant. Several allied forms are represented 
in my South American material which has not yet been studied and it may be hoped that an examination 
of these new forma may make a more definite conclusion possible. 
( )f the species of llhadinomyces first described, I have found R. pallulus in its typical form in the 
British Museum, No. HI on Lathmbium anywtatum from Folkestone, England, No. 444; on L. quadra- 
/„,„ from Netting Hill, England; and also in the Hope Collection No. 226 on Lathrobium sp. from Eng- 
land. A third species, possibly a variety of R. cristatm, has been found on several Lathrobia in America, 
and was illustrated in my Monograph, Plate IX, fig. 10, as "Var. a." . The same form, or one closely 
allied, was obtained in the British Museum, No. 445, on L. terminatum Gr., from Eltham, and in the 
Sharp Collection , No. 1144, on L. brunneipenn i* from Tho.nhill, England. It is necessary, however, to 
examine more abundant and better material of this variety before its limits can be determined. 
CORETHROMYCES Thaxter. 
Two typical species are added to this genus which correspond in all respects to the original type, and 
also two peculiar forms on Stilicus which depart distinctly from this type. The relations of their antheri- 
dia, however, appear to correspond to the type as may be seen in fig. 9, plate L, and their reference 
here appears to be cornet. 
Coretiiromyces Cryptobii Thaxter. Plate LI, fig. 3. 
This species appears to vary considerably in size, the accompanying figure representing its extreme 
development. The individual illustrated was associated on the same host with much smaller ones in 
which the appendages form a shorter denser tuft; but in all cases there seem to be three main erect branches 
of the appendage which, in connection with other details of structure, serve to distinguish it from the allied 
C. BrazUiensu. The figure is drawn from material found on specimens of Cryptobium kindly sent me 
from Kan is by Professor M. A. Barber. 
Til 
to.MYCES Braziliaxus Thaxter. Plate LI, figs. 1-2. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 432. June, 1901. 
Perithecium and receptacle much as in C. Cryptobii, but differing distinctly in the character of its 
appendage, the inner main branch of which consists of from four to six cells, the others very short, all 
marly opaque, the branchlets long rigid divergent, curved abruptly outward at the tips. Total length to 
tip of peritheeium 200-375 y.. Spores 28 X 3 /t. Perithecia 90-175 X 28-38 y. Appendages to tip of 
branchlets 140-200 ft. Two specimens from Colombia, apparently identical, are much larger; total 
length 010 ft; branches of appendages 540 y; perithecia 450 p.. 
On Cryptobium Braziliamim Luc, Paris Museum, No. 173, (Type) Brazil; on C. fasciatum Erichs, 
Paris Museum, No. 197, Caracas, Venezuela; on C. Flohri Sharp, British Museum (Biologia Coll.), No. 
702, City of Mexico; also from same collection on C. venustum Sharp, No. 758, Oaxaca, Mexico; on 
C. similipenne Say, No. 701, Mexico. The larger type on Cryptobium sp. indet., British Museum, No. 
38">. Colombia. On all parts of host. 
This species seems clearly distinguished from C. Cryptobii in that its appendage produces only an 
inner main branch, the rigid branchlets from which, together with the tuft of short external branches 
»m the main appendage, are bent outward in a characteristic fashion quite unlike that in C. Cryptobii. 
very large specimens (British Museum No. 385) from Columbia do not amiear to differ essentially 
The 
the typical torm, and similar variations in size are common in C. Cryptobii. 
Coreti i komyces purpurascens Thaxter. Plate L, figs. 4-5. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 433. April, 1900. 
Perithecia dull purple, mostly slender straight or slightly curved, nearly isodiametric or the outer 
nn convex; the base slightly broader, the iunetinn of thp Wal nr.^1 «iKKo<»1 » n A nf th*> ouhhasal and 
