7:; 
Tetranychus modestus n. sj>. 
Head, palpi, and legs are brownish, the body yellowish, with quite 
large blackish irregular spots across middle of thorax, a large lateral 
spot in region of last pair of Legs, and a broad irregular border around 
(Mid of body. Body rather more elongate than usual; bristles in the 
usual arrangement; Legs short; femur 1 Fully twice as Long as broad; 
tibia I only a trifle Longer than patella I: tarsus short, ends in a long, 
simple daw. curved only toward tip. in all respects like that of 71 
bicclor. Mandibular plate of moderate Length, not much narrowed 
toward tip. which LS broadly rounded. Palpi short, thumb not as Long 
as claw, with three nearly equal fingers on the tip: there is no plate or 
lamella. On each side of the anal opening there is a pair of tine hairs. 
Found in August at Washington, D. C, causinga rust-like appear- 
ance on the blades of corn. Closaly allied to the preceding, bul 
distinct by characters of palpi. 
Tetranychus tumidus n. Bp. 
Dark red and somewhat pruinose. marked across the thorax with a 
dusky hand, terminating each side in a rather Large dusky spot, a 
similar spot on each side near end of body: in some 
specimens there is an additional spot each side between 
the two; tegs and mouth parts pale reddish. Xoung 
specimens art 1 paler, with spots more distinct and con 
fluent. Eggs, are pale red. Body moderately broad; / A 
bristles rather l novr than USUal, quite stout, all in the ti^l—Tetrany- 
usual arrangement, subfrontal pair not twice as long ' ; " * tufnid**: 
as the frontal pair. Palpi of average Length, thumb is ^J^ii^ 1 ? 8 ^ 
short and stout, on its tip is a large short cylindrical 
finger whose base is not much smaller than the tip of thumb, at the 
inner upper corner is a short hair, and on the upper side near base 
is a slender finger. Mandibular plate about twice as Long as broad, 
narrowed toward tip. the sides before tip slightly concave, broadly 
rounded at tip. with a small yet distinct emargination in the middle 
Legs moderate: femur 1 fully twice as long as broad; tibia I plainly 
Longer than patella; tarsus of moderate Length, terminating in a claw 
which is strongly bent near middle and four-cleft beyond. 
Collected at Kustis. Fla.. on the leaves Of water hyacinth, by II. J. 
Webber. It is closely allied to T. bimaoulatus I Ian . . but distinguished 
by the very large finger <>n the tip of thumb. 
Tetranychus bimaculatus Harvey. 
THrctto/cftui bimaetUahtt Harvey. — Ann. Repi.Me. Agric. Exp. Sta. t L808 (1803 . 
p. 183, PL HI. 
There are several styles of coloration, one is pale greenish yellow, 
with a large group of blackish dots each side on base of abdomen, 
sometimes a median group of dote; another style i> dark crimson red, 
with black spots along each side of the body: Legs, and hair- pah- red- 
