172 Journal New York Entomological Society. [Voi vi. 
Prosopophora manihotis, sp. nov. 
9 . Scale suborbicular, averaging about 3 mm. long, by 2 y 2 mm. wide, and 1% 
to 1 y 2 mm. high. Color sordid yellowish-white or brownish-gray. Surface rugose 
near margin, dorsal surface faintly transversely ribbed, three longitudinal rows of 
slight tubercles more or less distinct; in some specimens the dorsal surface is worn 
smooth. Scale with conspicuous traces of a whitish chalky secretion. Boiled in 
KHO gives the liquid a reddish or brownish color. The dried females under the 
scales are black. 
9. Antennas 8-jointed, moderately stout, gently tapering; first joint about 
twice as wide as long, second a little wider than long, third a little longer than wide, 
second and third about equal in width and considerably narrower than first; fourth 
considerably narrower than third, about half again as long as wide; fifth still nar¬ 
rower but not twice as long as wide; sixth shorter than fifth, and seventh shorter 
than sixth, seventh being slightly wider than long; eighth joint knob-like, circular in 
outline, surmounted by several hairs, diameter less than width of seventh. Usual 
antennal formula approximately (34) 5 (612) (78); varying in one case to (34) 
( 5 12 ) 6 ( 78 ). 
Spines of integument large, long and sharp. Double glands of integument not 
of the usual figure-eight form, but bent half double, thus presenting the outline of a 
pair of short ears. The integument shows the rod-like structures very numerous and 
rather stout, the whole surface being covered with them. 
On bark of “nettle tree” (so called on label), Cuantla, Morelos, 
May 31, 1897 (Koebele 1757). Div. Ent., No. 7910. As there is no 
other possible plant in the tropics of Mexico, so far as I know, which 
could be called a nettle tree, other than what is known as the “ mala 
mujer,” which is a species of Manihot (or Jatropha ), I take it that this 
is the plant in question. It especially merits the name of nettle, and 
assumes tree-like dimensions. Its spines are extremely irritating if only 
barely touched to the skin. The bark on which the scales occur resem¬ 
bles perfectly that of this giant nettle. [C. II. T. T.] 
Tachardia nigra, sp. nov. 
Single specimens show the lac to be disposed in a more or less stellate form 
covering the body of the female, the stellate shape being due to the similar shape of 
the body of the female. Usually, however, the specimens are massed together on the 
branches, being so close to each other that the lac becomes confluent, joining the 
specimens and presenting the form of irregular elongate globular masses more or less 
confluent. The lac usually has a decided blackish surface color, unlike any hitherto 
known species of the genus; it varies to dark brown in some cases, however. Aver¬ 
age diameter of single specimens covered with lac, 3 to 4 mm.; height, 2 to 2]/ 2 mm. 
Boiling the lac in KHO gives a dark crimson lake color. 
9 . Spine is very long and thorn-shaped, perfectly regular in outline, widened at 
base, gradually tapering from near base to point, in length probably more than four 
times extreme basal width (the point in specimen studied is broken off). Perforated 
