1915] Biology of Juniper Berry Insects 165 
Eriophyes quadrisetus typicus (F. Thom.)*. The body is 
cylindrical, annulated, gradually tapering to posterior segments. 
It is very similar to P. pint. The body is shorter than in P. 
pint, being about 3 or 4 times as long as broad. The dorsal 
scutum possesses striations that are not very distinct, one of 
which is found on the median line and one on each side, both 
diverging at the posterior end. lLaterad of these are two arcs 
of circles, one on each side, with the concave surfaces facing 
outward. Near the margin are others that are also curved and 
incomplete. Seta dorsalis is borne on the sides of the cephalo- 
thorax, at a noticeable distance in front of its posterior curva- 
ture. It extends forward and upward and beyond the base of 
S. L., if bent backwards. 5S. L. are very long, being the longest 
of the ventral setz of the abdomen. Caudad of S. L., S. V. 1 
are found to be shorter than 5. L. 5%. V. 2 are short, while 
S. V. 3 attain the posterior extremity of the body. Besides the 
above-named 5S. D., there is, further behind, another pair of 
©». D., which are very short. At the anterior extremity of the 
scutum, there exists a minute frontal seta. The sete C. P. are 
well developed. The S. C. A. are longer than in any other 
species and very stout, (.025 mm.). S. G. are well developed. 
The rings are of the same character on both sides. The fifth 
joint of the legs is somewhat longer than the fourth, having at 
the end a small, distinct comb with seven pairs of small hairs. 
The tarsal claw is just a little longer than the comb. The 
valves of the epigynum are smooth, the posterior one being 
square. 
Meng thvottemalemcna.m:smice momieeemie lech cee o .25 mm. 
Watdthieotehernailecmrre ss sta ce te caries ori ceiele sts .0O7 mm. 
Shel) abeta Ole recone ae iaee ocho ethos ate .07 mm. 
LAG Ra e BN SRN PEE Coe, STEREO LTE ap Se ea .04 mm. 
SR Rail ierces ee clue eitcy et sor hear poke erent Ua, wn .03 mm 
Sn ea eA SeIG TAS, 0 Hic DS OL SS PES ECR ac ee .02 mm 
Eriophyes quadrisetus juniperus. On January 23, some ber- 
ries received from Professor C. O. Houghton, of Newark, Del., 
were found to be deformed in a different manner. Upon exam- 
ination Mr. Hodgkiss reported the mites to be Eriophyes 
quadrisetus juniperus. In this case, the berry was not fleshy 
throughout, and seeds were present, the tips of which stuck out 
of the berry in a conspicuous manner. ‘The normal berries are 
* Translated from Canestrini and identified by Mr. Hodgkiss of the Geneva 
Experiment Station. 
