Die Hymenopteren-Gruppe der Evaniiden. III. 537 



black, gibbous, rather deeply and transvcrsely wrinkled above, the furrows apparenüy 

 impunetured ; pleura not so coarsely rugose; metathorax coarsely rugose. Wings hyaline, 

 nervures and Stigma fuscous; the extreme apex and a subtriangular mark extending from 

 the stigma to the radial nervure at the junetion between the marginal and the hrst sub- 

 marginal cels fuscous; posterior half of the second transverse-nervure obliterated. Legs 

 pale fulvous, the tarsi paler, all the coxae and trochanters and the posterior femora ex- 

 cept extreme base and apex black, the posterior tibiae slightly obfuscated. Abdomen 

 hlack, polished, impunetured, the peduncle and the third and following segments black, 

 the rirst and second segment being bright rufous; ovipositor rather longer than the body, 

 fulvous, valves black. Length slines; expanse of wings 8 lines. 



Seems to be closely allied to A. Abbotii Westw., but is much smaller and some- 

 what ditferently colored.« Cress. 



Subreg. 3. 



New-Jersev. 



Aulacus firmus Cress. 



Aulacus firmus Cress., Trans. Amer. Ent. Soc. Philad., T. VII, p. 256, Q 1879 



»5. Black, thinly clothed with a short fine griseous pubescent, more obvious on 

 face; head subquadrate, broad but not long behind eyes; face finely rugose, vertex and 

 oeeiput feebly punetured; antennae entirely black; mesothorax finely transversely 

 wrinkled, middle lobe not gibbous, broadly deeply emarginate centrallv, and broadly 

 rounded in profile ; scutellum wrinkled ; wings hyaline, with a slight violaceous refiection, 

 a square violaceous black spot beneath stigma, not extending beneath second sub- 

 marginal cell, a small fuliginous cloud at base of first discoidal cell and another at ex- 

 treme tip of wing; legs black, tibiae more or less tinged with fuscous, the anterior pair 

 pale in front ; abdomen short, scarcely as long as thorax, petiole verv short, first, second 

 and third segments ferruginous, with a larg black mark above ; ovipositor as long as 

 bodv. Length 55 inch. One speeimen.« Cress. 

 Subreg. 2. 

 Colorado. 



Aulacus mclleus Cress. 



Aulacus mclleus Cress., Trans. Amer. Ent. Soc. Philad., T. VII, p. 255, 9 l %79 



9. L. i5 mm. Caput post ocellos tenuissime subdenseque, ante ocellos magis con- 

 spicue densissimeque punetulatum. Genae quam antennarum scapus paullo longiores. 

 Scapus quam articulus sequens paullulo longior ; flagelli articulus seeundus quam primus 

 triplo longior, tertius evidenter longior quam primus unacum seeundo (Tab. XXII, 

 Fig. 147). Margo occipitalis posticus simplex. 



Collum breve. Mesonotum grosse transverso-striatum; pars ejus media antice in 

 medio leviter impressa, cordiformis. Scutellum tenuiter transverso striatum. Coxae 

 posteriores polito-nitidae. Abdomen petiolo brevi et fortiter clavatum, sed compressum. 

 Terebra quam corpus totum multo longior, valvulis haud albo-signatis. 



Alae flavescenti-hyalinae ; ala antica apice leviter infumato et macula grandi, cir- 

 citer quadrata post stigma, cellulis discoidali prima et cubitali seeundo vena interpositn 

 minus conspicua separatis. Omnino rufus. 



(~>. Kopf hinter den Nebenaugen sehr seicht und ziemlich dicht, vor den Neben- 

 augen sehr dicht und deutlicher punktirt. Schläfe fast glatt. Wangen ein wenig länger als 

 der Fühlerschaft ; dieser nur wenig länger als das erste Geisselglied. Zweites Geisselglied 

 dreimal so lang wie das erste, drittes so lang wie die zwei vorhergehenden Geisselglieder 

 sammt dem Fühlerschaft (Taf. XXII, Fig. 147J. Abstand der hinteren Nebenaugen von 



