116 ENTOMOLOGICAL SOCEETY 
As to naphthaline, I consider that it is a good general preventative. I 
know it to keep out Psocids and Ants. It enhances the tendency to grease 
and to verdigris, and in tight boxes it seems to exercise a relaxing tend- 
ency, causing the wings to droop. 
Dr. Marx presented for publication the following description 
of a new spider of the family Theraphosoid(z : 
EURYPELMA RILEYI, MARX N. sp. Cephalothorax with a dense, fine, 
and somewhat curly pubescence of a pale, brownish yellow color. Mandi- 
bles, abdomen, and legs with a similar, but slightly darker, pubescence, 
which is sparsely interspersed with long hairs. These appear to be set 
in rows on the legs, and are at their base of a blackish brown color, get- 
ting gradually lighter toward the tip, which is nearly white. On the mandi- 
bles these long hairs have a reddish color. The eye eminence with a bunch 
of such longhair over the vertex. Tarsi and scopula somewhat darker. Un- 
derside of cepha'x, trophi, sternum and coxae, deep purplish red ; maxillae 
fringed with brick red long hair. Abdomen unicolored without any mark- 
ings, underside somewhat darker. 
Cepha'x only very little longer than broad. Clypeus truncate, posterior 
border deeply emarginate. Pars cephalica high, rounded, and more than 
half as long as cepha'x; dorsal depression deep, broad, and slightly pro- 
curved. Eye eminence rather high. Eyes amber-colored and oval except 
the anterior middle eyes, which are placed further apart than their dia- 
meter; anterior lateral eyes longer than the diameter of the A. M. E. and 
placed as far from them as their width; the posterior lateral eyes as long 
as the diameter of the A. M. E. ; the posterior middle eyes not half as large 
as the A. M. E. The four lateral eyes form a rectangle with parallel sides 
and nearly twice as broad as its length. Sternum slightly narrower than 
long. 
Mandibles very strong, porrect, as long as pars cephalica, and half as 
broad as their length f mandibular claws powerful, half as long as the 
length of cepha'x. 
Abdomen slightly longer than cepha'x; external spinerets comparatively 
short and stout, 4-jointed, last joint only slightly longer than penultimate. 
Legs short and rather stout, 4, i, 2, 3, fourth leg not quite 3 times as 
long as cepha'x; the pubescence parted in longitudinal stripes; Scopula 
very broad and dense on all four pairs. Fourth pair exceeds the length 
of the first pair, by the length of its tarsus. Tarsal claws with 3 minute 
teeth, which are very far apart. 
Spine armature : 
Leg I. Femur dorsal innerside near apex i; Patella none; Tibia, in- 
nerside i, i; underside, near apex i. Metatarsus and tarsus none. 
Leg II. As in leg I. 
Leg III. Femur none; Patella none; Tibia, innerside i, i; outside i, 
underside, near apex i; Metatarsus, outside i. 
Leg IV. Femur none ; Patella none ; Tibia, innerside i ; underside, near 
apex 2. Metatarsus, underside, near base 2; dorsal innerside i, i. 
