30 
For some time past it has been recognized that a Lecanium was to be 
found in the northeastern States on Rubus, but its identification has 
been a matter of doubt. The chief element in this doubt has arisen 
from Signoret's statement that L. fitchii was the smallest species known 
to him, whereas the insect commonly recognized in recent times is by 
no means particularly small. 
In July, 1893, Mr. J. Fletcher sent me specimens of a Lecanium on 
Lawton blackberry, from St. Davids, Ontario. From these I made the 
following notes at the time: 
Male scale 5 m,n long, 3 mm wide; oblong, subcarinate, sides finely rugose, not pli- 
cate, dorsum shiny ; color, dark chestnut brown ; several of the scales rather sub- 
globose than oval; sides of some more or less plicate. 
Newly-hatched larvae ocherous-white, with a very conspicuous blackish broad 
longitudinal band. 
I did not study this species further at the time, but noted that it was 
allied to and possibly a variety of L. persicce. June 12, 1894, Dr. J. A. 
Lintner sent me several specimens on a blackberry twig, the locality 
not being stated. Wishing to clear the matter up, I have made a 
microscopic examination of them, with the following result : 
Female with antennae 7-jointed; 2, 3, and 4 long and subequal (3 a little the longer) ; 
5 and 6 very short and subequal (6 a little the longer) ; 7 a little longer than 6, but 
much shorter than 4; 5 somewhat longer than broad; 1 large and ordinary. For- 
mula, 3 (24) 1765. 
This is the normal form; one showed antenna 8-jointed, 4 longest, 3 and 2 equal, 
5, 6, 7 short ; 8 longer than 5, 6, or 7, but shorter than 2. Legs ordinary ; tibia a little 
shorter than femur ; tarsus decidedly shorter than tibia; tarsal knobbed hairs and 
digitules filiform. Anal plates extremely small; their externo-cephalad sides longer 
than their externo-caudad. Derm tessellate, the plates mostly hexagonal ; gland- 
spots as in other species. 
The eggs found under a female are slightly tinged with pink. As 
Dr. Lintner observed, the scales when removed from the twig leave a 
curious and pretty pattern of white secretion, consisting of an oval 
outline, an abdominal patch, and lines indicating the lateral incisions. 
With Dr. Lintner's specimens are some male scales, which are as 
usual in the genus. 
Now, what are we to call this Lecanium received from Mr. Fletcher 
and Dr. Lintner? Putting aside persicce, which I am now convinced 
it can not be, audjitchii, on account of size, I turned for comparison to 
the European rubi. Mr. Douglas, in describing rubi, refers to the white 
markings of the females, which last until oviposition is completed. 
After that the scales become uniform nut-brown. Herein the species 
shows resemblance to L. juglandis Bouche, with its disappearing yel- 
low marks. I have not seen the American blackberry scale in the 
proper condition to say whether it has the markings as described by 
Mr. Douglas, but certainly on Dr. Lintner's examples the dorsal band 
is obscurely indicated, and the transverse marks seem to have been 
more or less distinct. So far, therefore, the evidence is inconclusive 
