NOTOGONIA. 57 



third antennal joints united. Head opaque, closely punctured ; the clypeus at the 

 apex shining, depressed, slightly punctured and rounded, not incised. Thorax opaque, 

 closely punctured, densely covered with a close, short, pale pubescence. Metathorax 

 transversely punctured ; the apex irregularly transversely striolated, semiperpendicular. 

 Abdomen short, ovate, sericeous at the junction of the segments; pygidial area broadly 

 truncated at the apex, punctured, and densely covered with silvery-white depressed 

 hairs beneath, shining and impunctate in the middle above, the sides closely punctured 

 and distinctly separated from the central shining part. Legs densely pruinose ; the 

 bristles, spines, and calcaria black; the claws reddish at the apex. Wings fusco- 

 hyaline, the apex of a much deeper smoky tint ; the second cubital cellule at the top 

 not half the length of the third at the top ; the recurrent nervures separated by nearly 

 the length of the top of the second cubital cellule ; appendicular cellule completely 

 traced. 



J ,< r 



8. Notogonia chrysura. (Tab. IV. fig. 14, 6.) - o^y^ c<k 



Nigra, argenteo-pilosa ; oculis in vertice longitudine antennarum articuli tertii inter se distantibus ; area 



pygidiali pube aurea obtecta ; alis fere hyalinis, apice fumatis. 

 Long. 12-5 millim. 



Hab. Mexico, Presidio (Forrer). 



Antennae microscopically pilose, the first joint longer than the second and third joints 

 united, hollowed externally above, dilated towards the middle ; the second joint about one 

 half the length of the third, the latter almost as long as the fourth. Head opaque, finely 

 coriaceous ; the clypeus finely punctured ; the vertex sparsely clothed with cinereous 

 hair, the clypeus, cheeks, and sides of the front densely covered with cinereous pubes- 

 cence ; the depression on the vertex round, deep, shining in the centre ; the furrow 

 below the ocellus dilated towards the apex ; the central, depression on the front elongated, 

 deep, the furrow leading to the antennae indistinct. Clypeus with a narrow keel in the 

 centre, the apex rounded. Eyes above separated by almost the length of the third 

 antennal joint. Thorax finely rugose; the metathorax finely coriaceous, widely fur- 

 rowed down the centre of the metanotum, the apex irregularly transversely striolated, 

 its furrow deep; scutellum punctured, obscurely furrowed down the middle; meso- 

 pleural furrow narrow, almost complete. Mesonotum broadly, but not deeply, fur- 

 rowed in the middle ; there is a shallow depression on the side at the tegulse, and 

 there is a short deep furrow in front of this depression. Abdomen shorter and narrower 

 than the thorax, the segments at their junction sericeous, the apical one fulvous; 

 pygidium broad, short, densely covered with fulvous-golden bristles and hair; the 

 ultimate and penultimate ventral segments shining, the latter with a thick tuft of 

 bristle-like hair on either side, there being a similar tuft, but shorter, on the preceding 

 segment. Legs slightly pruinose, the metatarsal brush and the tarsal and tibial spines 

 fulvous. 



biol. centk.-amer., Hymenopt., Vol. II., March 1889. il 



