OF WASHINGTON. 195 
Mr. Quaintance exhibited specimens of the larvae, pupae, 
and adults of Tischeria malifoliella Clemens, family Tineidae. 
He also showed apple leaves mined by the larvae. The leaves 
bore mines of four generations of larvae, there being from 23 
to 46 to a leaf. Larvae of the fourth generation, it was stated, 
winter in the fallen leaves on the ground; some of these were 
also shown with the specimens in their winter quarters. The 
species was said to have been very abundant in the vicinity 
of Washington the present year; and specimens had been re- 
ceived by the Bureau of Entomology from Delaware, Maryland, 
Virginia, and Pennsylvania. 
Prof. Webster exhibited a necklace formed of earth pearls, 
Mar gar odes, trimeni Giard, family Coccidae. This coccid is 
found in South Africa on the roots of a species of Rhus. The 
natives collect the. pearls and after stringing them sell them 
as the Indians do beads or the South Sea Islanders do shells. 
They are worn as necklaces, belts, and bracelets. Prof. 
Webster remarked on the variation in color of the different 
specimens from nearly pure white to brown and golden with 
greenish metallic lustre. Dr. Howard made a few remarks 
on the Jamaica specimens of Margarodes collected several 
years ago by the late Mr. H. G. Hubbard and exhibited before 
the Society. Mr. Hubbard's specimens had been cleaned 
very carefully and present a finer appearance than those usually 
seen. 
Dr. Dyar spoke of a futile attempt made to find larvae of 
Monoleuca semifascia, family Cochlidiidae, in North Carolina 
this year. This is the only species described from this region 
of which we do not now know the larva. 
Mr. Schwarz spoke of a difficulty experienced in the 
preparation of the lists of the insects collected on Plummers 
Island, Maryland a difficulty that has also been experienced 
by the botanists namely, that many common species the 
occurrence of which on the island is unquestionable could not 
be listed on account of the actual absence of specimens. One 
is so much more apt to pay attention to the rarer species than 
to pick up those common and well-known. Over 1,100 species 
