16 ENTOMOLOGICAL NEWS [Jan., ’20 
smooth area broader than high, lateral areas pubescent. Legs slender, 
femora infuscated, all tarsi longer than tibiae, claws simple. Wings 
longer than body, with distinct dark veins, radial cell closed, its ‘length 
divided by width (inside measurements) gives a quotient of 2.4, maximum 
width of wing divided by width of radial cell gives 7.0, second abscissa 
of radius one and one-half times first, from bottom of radial cell a spur 
sticks straight downward two-thirds as long as first abscissa of radius, 
a perpendicular line erected at middle of longitudinal axis of wing would 
just touch apex of radial cell, surface pubescent with dark hairs, margin 
ciliate. 
Abdomen nearly as long as thorax, longer than high, with ring of hairs 
at base. Using width of head as a base the length of mesonotum ratio 
is 1.0, antennae 2.6, wing 3.4. 
o.—Antenna 14-segmented, less abrupt change in size and color be- 
tween segments 3-5 (which are not excavated) and the last nine, length 
2.6 times width of head. 
Length of five males .55—.9 mm., average .7 mm. Length of eight 
females .7-.9 mm., average .8 mm. 
Type: Cat. No. 22589 U.S. Nat. Mus. Type female, allo- 
type and one male and four females paratypes. One pair 
paratypes with Acad. Natl. Sci. Phila., one pair in Coll. 
Biol. Survey, and two females (one in balsam) and one male 
with author. 
Type-locality: Twin Falls, Idaho. 
Biology: Reared from Aphis bakeri Cowan, the clover 
aphis, June 15 and in July, 1919, by Mr. Ralph H. Smith, 
who says he has made repeated unsuccessful attempts to 
rear this Cynipid as a parasite of the aphid but on two oc- 
casions reared them in cages along with A phelinus lapsiligni 
Howard, the most important parasite of this aphid. He is 
therefore inclined to believe that the Charips is not a primary 
parasite but is a parasite of Aphelinus lapsiligni Howard 
instead. 
Labenidae, a New Family in the Ichneumon- 
oidea (Hymen.). 
By Henry L. Viereck, U. S. Bureau of Biological Survey, 
Washington, D. C. 
Labena Cresson, the following new genus and _ possibly 
A pechoneura Kriechbaumer differ from Grofea Cresson and 
most other, if not all other, Ichneumonidae in having the 
