AMERICAN HYMENOPTERA. 423 



Sides of front strongly punctured, the inner edge striated. Centre of 

 face smooth, the sides punctured and striated, the striae stronger on 

 the outer edge. Pro- and meso-thorax with the scutellum closely punc- 

 tured, but not very strongly, the central lobe of mesonotum closely 

 transversely striated ; the centre of the scutellum has a large smooth 

 space on the apex. Basal half of metanotum closely transversly striated, 

 the apex with two transverse keels and a few broken longitudinal ones. 

 Propleuras transversely aciculated. Mesopleurae smooth at the base, 

 the apical depression striated at the base above and entirely below ; 

 the rounded apical part is strongly closely punctured. Metapleurae 

 rugosely punctured above, down the centre is a large furrow, running 

 from the base to the apex, it becomes narrowed towards the apex and 

 margined by stout keels ; the part below this is strongly aciculated, 

 and has a few broken keels ; below this are two longitudinal keels 

 with some transverse ones between. The ovipositor forms a broad, 

 stout sheath, which projects the length of the last segment beyond it. 



Mendoza, December. 



The cf is similarly colored but with the yellow marks less 

 developed ; the example in the collection is only 4 mm. in 

 length. 



5. Spilosmicra Jeiisen-Haarupii sp. n. 



Antennal scape yellow, the flagellum brown. Head yellow, the occi- 

 put except round the edges, a line in the centre of the vertex, the 

 centre of front broadly, the depression at the side?; of the ocelli and the 

 mandibular teeth, black. Thorax black, with the following pale yellow 

 markings : The pronotum and upper part of the pleurae (the black on 

 the latter is narrowed above) , a black band on the base of the pronotum, 

 the mark gradually narrowed in the middle above ; a semi-circular, 

 oblique mark on the sides of the mesonotum along the furrows, a 

 smaller, more irregular spot at thetegulae, the scutellum, except round 

 the edges and with a black line, squarely dilated at the apex, down 

 the centre a triangular mark, the narrowed end above, immediately 

 below thetegulas, a slightly larger triangular mark, with the narrowed 

 end below, and a larger oblique oval spot immediately behind it on 

 the metapleuras. The basal half of the second abdominal segment, 

 the basal third of the third, narrow bands on the base of the following 

 three segments and two spots on the penultimate segments pale yellow. 

 Legs yellow, the hind coxae black on the top and bottom ; an irregular 

 fuscous spot in the centre of the femora, on the outer side, a black 

 semi-circular one on the apex below and the teeth black ; the inner side 

 broadly infuscated below, the band incised near the middle ; there is 

 a fuscous longitudinal streak near the top ; there are about sixteen 

 small teeth below, the apical closely pressed together, the basal not 

 larger than the others. 9. Length 4-5 mm. 



TRANS. AM. ENT. SOC, XXXV. DECEMBER, 1909. 



