46 
nearly of the shape of the median lobes; then comes a raised portion, 
gradually sloping, and exhibiting four or five marginal sacs of no great 
length -, then a notch and two very large spine-like plates, then after a 
short interval a notch marked by a pair of marginal sacs, then after a 
rather long interval another notch and pair of sacs, then shortly after 
another pair of very large spine-like plates, then after a rather long inter- 
val a notch and pair of sacs, then after a somewhat longer interval a 
couple of notches, then a large spine-like plate, then a notch, then a large 
spine-like plate. The notches might as well be described as serrations. 
Habitat. — Found by Mr. Alex. Craw in his quarantine work, October 
HO, 181)."). "upon plants like Anthurium arrived from Central America," 
It occurs on the leaves, in moderate numbers, scattered. It has a cer- 
tain superficial resemblance to M. oitricola, but differs at once by the 
narrower, keeled scale. 
