146 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 13, No. 8 
to 3.3 cm. wide, acute or acuminate, acutely cuneate at base, depressed-serrate 
(teeth 4 to 8 pairs), thin, evenly but not densely uncinate-hirsutulous on 
both sides, evenly tuberculate-hispid on surface above, hispid chiefly on the 
veins beneath, triplinerved well above the base, green on both sides; branch 
leaves smaller; heads solitary in the forks of the stem and at tips of branches, 
in flower slender, about 6 mm. wide, in fruit hemispheric, about 1 em. wide; 
peduncles slender, pubescent like the stem, 1 to 5 em. long; disk in anthesis 
7 mm. high, 3 mm. thick; involucre 2-seriate, obgraduate or subequal, 6 to 
8 mm. high, the phyllaries few (about 6), the outer lanceolate or narrowly 
oblong-lanceolate, 1.5 to 2 mm. wide, obtuse or acutish, herbaceous for the 
upper half of their length, pale and usually 1-ribbed below, erect, pubescent 
like the stem and hispid-ciliate, the inner similar but usually shorter and 
broader, with shorter usually acute herbaceous tips; rays 3 to 5, fertile, orange 
yellow, the lamina suborbicular, 3 to 3.5 mm. long, 2.8 to 3 mm. wide, bilo- 
bate with sometimes bidentate lobes, densely hirsutulous on back on the two 
chief nerves; disk flowers about 5 to 7, orange yellow, puberulous and ciliolate 
on the teeth and with a puberulous ring at base of throat, 3.8 to 4.5 mm. 
long (tube tubular-funnelform, 1.5 to 2 mm., throat funnelform, 1.5 to 1.8 
mm., teeth ovate, 0.7 mm.); pales scarious, obtuse, wing-keeled to below the 
apex, 7 mm. long; ray achenes (with wings included) broadly oval-obovate, 
5.5 mm. long, 3.5 to 4 mm. wide, the wings about 1 mm. wide, short-ciliate 
and erose, prolonged above the achene as rounded ears, not adnate to the 
pappus cup, often purplish-spotted, the body of achene obovoid, obeom- 
pressed, 4 mm. long, 1.5 mm. wide, blackish, tuberculate-hispidulous espe- 
cially on midline, with a conspicuous callous appendage on each face at 
base; pappus a short-stipitate, lacerate, squamellaceous corona about 1.5 mm. 
high (including the neck), and 1 to 3 awns 2 mm. high or less, or the latter 
sometimes obsolete; disk achenes similar but compressed, the pappus awns 2, 
unequal, 1 to 1.5 mm. long. 
Type in the U. 8. National Herbarium, no. 1,139,183, collected in sand 
along a stream, near Armenia, Department of Sonsonate, Salvador, April 
18, 1922, by Paul G. Standley (no. 23498). 
OTHER SPECIMENS EXAMINED: SALVADOR: In hedgerow, vicinity of San 
Salvador, altitude 650 to 850 meters, December 20, 1921, to January 4, 1922, 
Standley 19414. Wet soil along stream, vicinity of San Salvador, March 30 
to April 24, 1922, Standley 23300. Wet thicket, vicinity of Santa Emilia, 
Department of Sonsonate, altitude 135 meters, March 22 to 25, 1922, Standley 
22259. 
Among North American species Zermenia iners is nearest Z. hispida 
(H.B.K.) A. Gray and Z. longipes Benth., from both of which it differs in its 
annual root, smaller heads on much shorter peduncles, and tiny, roundish 
rays. 4. rudis Baker of Brazil, the only annual species of the genus hitherto 
known, is more closely related to Z. iners, but has considerably larger leaves 
and rays. 
ENTOMOLOGY.—New genera and species of sucking lice. H. E. 
Ewine, Bureau of Entomology, U. 8. Department of Agricul- 
ture. (Communicated by 8. A. Ronwer.) 
In this paper are described four new genera and three new species 
of Anoplura, or sucking lice. The material upon which these genera 
