496 
Journal of Agricultural Research 
Vol. XXXI, No. 5 
This species has been redescribed from several specimens mounted 
from the Maskell material of “ calceolariae,” but without precise 
data, and from specimens from California on Phormium, with refer¬ 
ence to Leonardos description of diminutus. It appears from this 
material that there is definite variation in the number and develop¬ 
ment of the posterior cerarian spines, or perhaps more precisely, in 
the extent to which the tendency toward reduction and modification 
has affected these structures. The outstanding characteristic of the 
pecies, in connection with the cerarian reduction, is the profuse 
development of the, normally, ventral abdominal, multilocular disk 
pores and their occurrence on the dorsum as well as over the whole 
ventral surface. 
So far as positively known, the species is normally confined to 
Phormium as a host, although, as pointed out in discussing the 
intricacies of Masked's utilization of the name calceolariae , the 
specimens recorded by him from Cordyline australis in 1893 may 
reasonably be given a tentative assignment here. 
