287 
A NEW AND DESTRUCTIVE PEACH-TREE SCALE. 
(Diaspis lanatus Morg. and Ckll.) 
Fig. 12. — Diaspis lanatus: a, section of peach trunk with male and female scales in situ — natural 
size; b, scale of adult female; c, do. male; d, do. in natural position — enlarged (original). 
Aii interesting and destructive bark-louse has recently made its 
appearance in certain portions of the Atlantic States. Its life-history 
has been carefully investigated during the past year, and some account 
of the species has been prepared for the Annual Eeport of the Depart- 
ment for 1893, now in the printer's hands. The more technical portions 
of the investigation, including the full and detailed descriptions of the 
different stages of the insect, were necessarily omitted from this report, 
however, and on account of their scientific importance we introduce 
them here. 
DISCOVERY, OCCURRENCES, AND LIFE-HISTORY OF THE SPECIES. 
In regard to the discovery and occurrences of the species, and its 
previous history, we may briefly summarize for the purposes of this 
article, as follows : 
Certain seedling peaches, growing in rows on the grounds of the 
U. S. Departmeut of Agriculture, were found in 1892 to be badly affected 
by a scale-insect which was recognized as new to the fauna of the 
United States. The young trees were badly damaged, and the lower 
halves of the trunks of many of them were covered with the scale- 
iu sects, which were present in extraordinary numbers, giving the worst- 
infested trees the appearance of Fig. 12. The young twigs of these 
trees were already dead and dry. The srjecies was found to be identi- 
