232 HYMENOPTEEA. 



middle ; spines longish, stout, obtuse at apex. Abdomen longer than the head and thorax 

 together ; first segment longer than the second ; petiole shining, impunctate, black 

 beneath and in the centre above to the middle of the postpetiole, where the black 

 becomes dilated ; second segment, except the apex, and a large mark on either side not 

 far from the base (the mark curving round towards the base of the segment at the end), 

 black ; third segment black, except an indented spot on either side, and the apex broadly, 

 yellow ; the apices of the other segments broadly, and the ventral surface, yellow. 

 Ovipositor as long as the thorax, black. Legs yellow, lined above with black, the hind 

 tibiae broadly ; a longish black mark on all the coxae ; posterior tarsi yellow, black at 

 the base ; the four anterior tarsi fuscous beneath. Wings hyaline, fuscous at the apex ; 

 stigma black ; areolet small, longer than broad, slightly angled where the recurrent 

 nervure is received, the apical nervure bullated in the centre. 



4. PolycyrtUS COnfirmatuS. (Tab. X. fig. 3, metanotum and base of abdomen.) 



Long. 15 millim. ; terebra 3-4 millim. 



Hab. Guatemala, Volcan de Atitlan 2500 to 3500 feet (Champion). 



Almost identical in coloration with the preceding species ; but the body is much 

 narrower and more slenderly built ; the frontal spine is not so stout, and has an upward 

 curve ; the spines on the metathorax are not so stout, and are sharper at the apex ; the 

 black transverse band on the metanotum does not reach the spiracular longitudinal line ; 

 the second segment of the abdomen is longer, being nearly as long as the first, the 

 lateral yellow marks are not so broad, and are more produced towards the base of 

 the segment ; the metapleurae are scarcely punctured. 



5. Polycyrtus ferox. 



Polycyrtus ferox, Cresson, Proc. Acad. Phil. 1873, p. 143 ( ? ) \ 

 Hab. Mexico, Orizaba 1 (Sumichrast). 



6. Polycyrtus major. 



Polycyrtus major, Cresson, Proc. Acad. Phil. 1873, p. 143 ( $ ) \ 

 Hab. Mexico, Orizaba 1 (Sumichrast). 



7. PolycyrtUS CruciatUS. (Tab. X. fig. 4, metanotum and base of abdomen.) 



Niger ; pletiris metathoraceque flavis ; pedibus flavo-fulvis ; lineis 3 metathoracis maculaque ad apicem abdo- 

 minis segmenti l 1 , nigris ; alis subfumatis. § . 

 Long. 15 millim. ; terebra fere 3 millim. 



Hab. Mexico (Salle). 



Head yellowish-white ; behind, the vertex in the centre, and the base of the man- 

 dibles, black; frontal spine short and obtuse at the apex; face projecting in the centre; 

 clypeal fovea? longish, oblique. Antennae slender, the yellow ring on the flagellum broad. 



