a \ + Mi, , as TAL 4 
r7 he i ies Via th yee aae* 
* rN ¢ ; 
In Dr. Hagen’s list of ‘‘ Museum pests 
observed in Cambridge,” published i in the 
ural Eesiary, vol. 20, I find no mention 
of the above species, and in order that 
eastern collectors may guard against its 
introduction into their cabinets I give the 
_ following brief description of its larva and 
pare 
LARVA. 
Measurements, when full grown : length, 
exclusive of caudal hairs, 5.4 mm. ; inclu- 
ding caudal hairs, 8 mm. ; breadth 1.6 mm. 
Upper dermal surface reddish brown ; 
lower surface vitreous white ; entire sur- 
face covered with short, soft, yellowish 
~ brown hairs ; each stigmatic orifice sur- 
rounded by a stellate tuft of longer setose 
a hairs, of variable length and of the same 
___ color as the general hairy covering. The 
iS upper surface of the last three segments is 
tr 
entirely concealed by a dense mass of short, 
ae erect, dark brown hairs so nearly equal in 
has BM ' 
‘tles of a very compact brush. 
Sy CELE. 
A NEW MUSEUM PEST, TROGODERMA TARSALE MELS. 
BY FRANCIS HUNTINGTON SNOW, LAWRENCE, KANSAS. 
length as to present the appearance of hav- 
ing been cut off with shears, like the bris- 
The sides 
of the upper surface of the two preceding 
segments have a similar covering. The 
two caudal appendages, which attain one 
half the length of the body and are notice- 
ably separated when the larva isin motion, 
often appear to the eye to consist each of 
a single, stout, elongated bristle, but, under 
the microscope, are seen to be composed in 
each case of from twenty to twenty-five 
separate hairs. 
Larvae infesting cabinet specimens in the 
autumn remain in their hosts during late 
autumn aud winter, apparently in an inac- 
tive condition. From 1 Marchto 1 April, 
according to the season, they begin to trans- 
form into the pupal state, for which pur- 
pose, unless the infested specimen is of 
large size, they come forth from their 
places of concealment and are easily ob- 
served and destroyed. 
