404 
very obtuse-angled triangle, and bounded by a well defined impressed line. Eyes 
slightly hairy; facial depression narrow, deep; a rather broad, transverse, pearly- 
white band extending from facial depression to border of eye. This has the appear- 
ance of a structural character, and is probably generic in value, though it may be 
only specific. Bulb of antennae distinctly separated from scape. Antenna as a 
wbole clavate. Pedicel as long as broad, funicle joints 1 to 4 increasing slightly in 
length, considerably in breadth; club ovate, as long as two preceding funicle joints 
together and distinctly 3-jointed. Basal joint nearly as long as the other two 
joints together, the terminal very short, very thin, and pointed. Sclerites of notum 
of thorax as indicated in the figure. Metascutum with central longitudinal furrow 
widening anteriorly. Abdomen flattened, concave above, ovate in shape. Post- 
marginal vein of forewings longer than stigmal. Stigmal rather long, descending 
into the disc at an angle of about 45°. Club distinctly spurred. 
Male: Besembles female, except that the abdomen is narrower, with subparallel 
sides. Stigmal club is larger, and the facial band is broader. The funicle joints of 
antennae are prolonged above into rounded teeth, as indicated in the figure, the 
hairs on the funicle joints being considerably longer than on the corresponding 
joints of the female. 
Leucodesmia typica n. sp. 
Female: Length, 1.5 mm ; expanse, 3. 4 mm ; greatest width of forewing, .42 mm . Head 
faintly shagreened, pronotum, mesoscutum and disk of mesoscutellum granulate, 
mesoscutum more coarsely than mesoscutellum; metanotum and abdomen smooth; 
mesopleura faintly shagreened. Head dusky yellow ; face with a transverse pearly- 
white band bordered with jet black above and below, interrupted in the middle by 
the facial depression. Scape of antennae yellowish, with a faint dusky band in the 
middle. Pedicel black, flagellum dusky yellow with black hairs. Thorax dusky 
yellow with teguke darker; metanotum black. Abdomen black. Front legs dusky, 
middle and hind legs nearly black, yellow at joints; tarsi yellowish. 
Male : About the same size as the female; general color darker; head darker, with 
white transverse band of face broader. Basal half of bulb of antenna white, apical 
half dark, facial depression with a light center. Abdomen with a large yellow-brown 
or serni transparent spot at base. 
Described from many male and female specimens reared from Da- 
hruma coccidivora, preying upon Leoanium tulipiferce collected at Cres- 
cent City, Fla. Issued at Washington April 11 and 12, 1895. 
THE HORSE-RADISH FLEA-BEETLE. 
(Phyllotreia armoracice Koch.) 
By F. H. Chittenden. 
Another injurious European insect lias been introduced on this con- 
tinent, and although its exact economic status can not yet be defined 
its advent among us should be regarded with distrust. 
During August, 1893, the writer obtained from the withered leaves 
of a plant that grew in one of the numerous vacant lots within a quar- 
ter of a mile of the grounds of the Columbian Exposition a few speci- 
mens of a little iiea-beetle of the genus Phyllotreta entirely different from 
any hitherto known to occur in North America. These specimens agree 
perfectly with Weise's description of Phyllotreta armoraeice (Erich- 
