J. CHESTKK BKADLKY. 128 



INTERAUI.ACIIS n. gen. 



Txjpe. — /. kiefferi n. sp. 



Tills genus is a sort of connecting link between the Auiacini aiul 

 tlie Pristaulacini. Tlie genus is entirely South American so far as 

 I know. Besides the type, Prutanlacus catidatus and P. tricolor 

 Szepligeti, and perhaps P. luvviorrhoidellus Westwood belong to 

 this genus, as doubtless do other described species. 



Iiiteraulacus kiefferi n. sp. 



9- — Black; four anterior kuees and base of tarsi, base of posterior tarsi and 

 middle of the vaginre white; anterior tibiae brown. Forehead and occiput 

 with well-separated round deep punctures, rather regularly scattered over the 

 surface; temples more finely and closely punctured ; posterior ocelli nearer the 

 compound eyes than each other; basal four antennal segments in the proportion 

 of 3-3-.5-10. Medial mesothoracic lobe gibbous, deeply emarginate, the sides 

 very acute in front, strongly transversely carinate. Posterior metatar.sus one- 

 third longer than the remaining joints together; wings hyaline, except the 

 apical margin is fu.^cous. Petiole long and slender; abdomen slender; ovijiositor 

 12 mm. long. Length 10 mm. 



Hub. — Brazil. 



Type and two paratypes in the collection of Cornell University. 



SKMEXOVIUS n. nom. 

 = Anaidacus Semenov, ncc. MacLeay (Coleop., 1825). 

 = Semenovia Kieffer, tiec Weise (Coleop., 1889). 



Type. — Anaiilaevs sibiricola Semenov. 



Kieffer erects Semenovia''^ without mentioning any species, but 

 doubtless intended to replace Anaulacvs Semenov, as the characters 

 given apply to that genus. Unfortunately Semeiiovia is itself pre- 

 occupied, and another change becomes necessary. 



OnOXTAlILAC'lTS Kiefler. 



Type. — Aulacus rufitdr.ns Cresson. 



Semenov was correct in allying Aulacus ruJitar.Hls Cresson with 

 Anaidacus Semenov. But Kieffer distinguishes them by the vena- 

 tion of the hind wings, erecting Odontaulaciis for Aulacus vrhior 

 Cre.s.son and A. rufitarsis Cresson, neither being mentioned as type. 

 We may call rufitarsis type, as that is the more distinct and common 

 of the two. 



In my former paper I suppressed Aulacus editus, abdominal is and 

 bilobatus. Since, then I have examined some hundreds of specimens, 



■■ Spec. Hym. d' Eur. (Andre), vii, bis. p. 382. 



TRANS. AM. ENT. SOC. X.XXIV. APRIL. 1908. 



