1 6 ENTOMOLOGICAL NEWS [Jan., *2O 



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 'ength 

 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 i.o, antennae 2.6, wing 3.4. 



d 1 . 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 baker i 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 Cvnipid as a parasite of the aphid but on two oc- 

 casions reared them in cages along with Aphelimis 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 Aphelimis !<ipsili>ii 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 

 Apechoneura Kriechbaumer differ from Grotea Cresson and 

 most other, if not all other, Ichneumonidae in having the 



