MONTEZUMIA. 1-7 



B. Head strongly dilated on the vertex behind the eyes, having 

 (so to speak) an anomalous form. Tlxorax much lengthened : 

 abdomen often large. The first segment depressed or flat- 

 tened above and divided by a very distinct groove. 



22. M. Brasiliensis Sauss. % . — Praecedentium staturae vel paulo 



major ; occipite maxime producto, thorace eodemmodo elongato, sed 

 antice magis rotundatoet nietanoto paulo latiore, tvuncatiore, foveolato ; 

 abdomine latiore, segmentia, 1°, 2°, depressis ; piiino lato, sulco pro- 

 fundo diviso. Iusecti color oinnino castaneus ; metanoto, lateribus et 

 antennaruin flagello, nigris. Alis fusco-cyaneis, stiginate ferrugiueo. 

 Longit, 19 mm. 



Variat: Pedibus flavo-variis ; abdominis primo segmento flavo-marginato ; 

 corpore plus minusve ferrugiueo. 



% . Antennis apice uncino parvulo fulvo instructis ; clypeo ferrugiueo 

 apice emarginato, valde bideutato. 



Montezumia Brasiliensis Sauss. Vespides, III, 164, 56 (1854). 



Hob. Brazil. Province of the mines. (Typus in inuseo Pari- 

 siensi.) 



23. M. macrocephala Sauss. 



Montezumia macrocephala Sauss. Vespides, III, 165,' 57; pi. iv, fig. 3, £ 

 (1854). 



Abdomiue maxime dilatato. 



Ill this species the male has the abdomen scpiat or flattened, 

 strongly dilated and depressed; its first segment is parted by a 

 strong groove, sometimes continued on the -2d segment. In the 

 female the abdomen is not so flattened down but is slender and of 

 the normal form. The clypeus 9 is terminated by two small, 

 rather distant teeth. 



Var. Often the clypeus 9, the face, tarsi, and margins of the 

 abdominal segments become yellowish. On the contrary, the 

 whole insect often becomes uniformly ferruginous. 



Hab. Brazil. (The type in the Paris museum.) 



Division PARAZDMIA. 

 (Sauss. Vespides, III, 166.) 



Head much dilated behind the eves; thorax wide and strongly 

 depressed; metathorax prolonged behind obliquely; its lateral 



J Errata. — 10th line of the description, instead of " cltssous des antennes" 

 read: "dessus des antennes." 



