G. C. DAVIS. 209 



shining and coarsely punctured on the others; hasal segment with four, and 

 sometimes vvitli part of a fifth carinte; segment two, and sometimes tliree and 

 four with a median carina. 



Four females and six males from Connecticut, New Hampshire, 

 Michigan, Canada and California (Ashmead). Type, coll. Amer. 

 Ent. Soc. 



C'horiiiseus constrict us n. sp. 



. — 4 mm. Black, pilose, with face, orbital line above and antennje dark fus- 

 cous ; legs and tegulae pale rufous; legs and antennae short and thickset; meso- 

 notum polished, finely punctured ; six distinct carina on metanotum; pleurae 

 polished, shining; abdomen with the two basal segments coarsely punctured, de- 

 pressed, flat; the remaining segments, except at base of third, are oval, nearly 

 cylindrical, which gives the abdomen a very peculiar appearance and makes a 

 strong constriction between the second and third segments; basal segment with 

 five carinie, the median one being sinall, Init distinct; second segment with only 

 the median carina; remaining segments with no carina, finely punctured and 

 strongly pilose. 



One specimen from Franconia, N. H. (Mrs. Slosson). Type, coll. 

 G. C. D. 



Chorinseus excessoriiis n. sp. 



9 . — ti mm. Black, with white pile ; face, mouth-parts, except tips of mandi- 

 bles which are black, scape beneath and tegulse, lemon-yellow: legs ferruginous, 

 with base of posterior tibife and four anterior legs paler ; antennae reddish brown ; 

 wings hyaline, nervures and stigma brown ; second recurrent nervure angularly 

 broken above the middle and from it extends a spurious vein one-fifth the dis- 

 tance across the third discoidal <^ell ; thorax polished, shining; mesonotum finely 

 punctured ; metanotum shining, with a central carina between the two median 

 carinse, making seven carinse on the metathorax ; nietapleura? shining and with 

 the short (uirinse converging to coxse ; mesopleurse s])arsely and finely punctured 

 above middle coxse : abdomen oval, clavate, coarsely and not closely punctured on 

 basal segment closely on second and third and gradually becoming smaller on 

 the remaining segments; five carinse on basal segment, three on the sec-ond, one 

 on the third ; ovipositor short, straight. 



One specimen fn^m Washington (coll. Amer. Ent. Soc). 



C'lioriiiH^iiS texaiius Cress. (Exochm). Trans. Amer. Ent. Soc. iv, 168, '^ . 



9 %, . — (J-7 mm. Black, with face and moutli-parts lemon-yellow, 7iK)re or less 

 tinged with rufous; palpi, scape beneath and tegulfe pale; legs ferruginous, ante- 

 rior pair paler ; wings hyaline, nervures and stigma reddish brown; second re- 

 current angularly broken above the middle ; thorax ])olished; mesonotum punc- 

 tured; metanotum with six carinae; metapleurse with short carinse converging 

 to cosfe : abdomen elongate, closely punctured, opaque on .second and third seg- 

 ments; basal segment with foiir carinse, second segment with three carinte ; third 

 segment with median carina not reaching the apex. 



The type is in the U. 8. Nat. Mus. and is from Texas. .\ seeoinl 

 specimen ( 9 ) from Colorado is in the collection of Amer. Ent. Soc. 



TRANS. AM. KNT. SOC. XXIV. (;J7) AUGUST, 1897. 



